Top Penetration Testing Companies in Bulgaria 2026

Updated: November 2026. Company profiles were rechecked against each provider's official website. DeepStrike publishes this guide and is listed first; buyers should independently verify legal entity, tester assignment, onsite capability, accreditation, data handling, and contract terms before procurement.

Comparing providers beyond Bulgaria? Our worldwide list of penetration testing companies covers firms that deliver testing across regions.

Executive Summary

• Intended buyer profile: enterprise security leaders, regulated organizations, cloud-first product teams, and procurement owners shortlisting Bulgaria penetration testing providers in 2026.
• Listed first: DeepStrike (publisher of this guide)
• Best Bulgaria-based specialist: SoCyber
• Best for enterprise and formal assurance: PwC Bulgaria
• Best for long-established local penetration testing: LIREX
• Best for security-testing-as-a-service: AMATAS
• Best for enterprise cyber + SOC integration: DIGITALL
• Best emerging specialist: CyberXperts
• Best for SMB and mid-market: BaseLine
• Best for autonomous / continuous testing: Cyberware
• Best for compliance-heavy and aviation environments: SM Tech
• Decision insight: in the Bulgaria market, local accessibility can help contracting and governance, but validated exploitability, reporting clarity, and cloud/API depth usually matter more than brand size or scanner volume.

Quick Comparison: Top Penetration Testing Companies in Bulgaria

Market Risk Context

With the global average cost of a data breach at USD 4.99 million in IBM’s 2026 study, the question behind top penetration testing companies Bulgaria is fundamentally about loss containment, control validation, and whether a provider can surface real attacker paths before a breach, ransomware event, or business interruption hits. That figure is global, not Bulgaria-specific.

Related Balkan and Black Sea markets: Romania, Croatia and Turkey.

Stolen credentials remain a major breach vector, while ENISA continues to identify identity abuse and stolen credentials as important causes of compromise. AI-assisted offensive capability also continues to grow, increasing the value of providers that can validate realistic attacker behavior rather than produce scan-heavy checklists.

In Bulgaria, buyer scrutiny has increased further because the Cybersecurity Act was formally amended in February 2026 to transpose NIS2 into national law. The amendment was adopted by the National Assembly on 5 February 2026 and published in the State Gazette, issue 17, on 13 February 2026. The revised framework widens scope and strengthens risk-management and incident-reporting expectations for covered public and private entities.

For finance-sensitive organizations, DORA has applied since 17 January 2025 and explicitly covers digital operational resilience testing for in-scope financial entities. GDPR, by contrast, remains risk-based under Article 32 and does not create a universal named pentest requirement for every buyer.

This guide is methodology-driven and does not accept paid inclusion. Disclosure: DeepStrike, the publisher of this guide, is a penetration testing provider and is listed first. Weigh our entry the way you would any vendor's description of its own service; competitor profiles are based on each provider's official website, and buyers should conduct independent due diligence. DeepStrike publishes this list and lists itself first; the order of entries is not a quality ranking, and providers are not scored or ranked against each other.

Bulgaria Regulatory and Procurement Context

For essential and important entities, the reference points are the amended Cybersecurity Act and its Ordinance on Minimum Requirements for Network and Information Security. Incidents go to the national CSIRT, CERT Bulgaria, whose online notification form is labelled for use within 2 hours of detecting an incident under Article 21(4) of the Act and Article 31(1) of the Ordinance. Agree in advance how a live compromise found during a test will be escalated to your incident team, so it can be assessed against those reporting duties.

Financial entities have an extra layer: DORA Article 26 requires financial entities identified by their competent authority to carry out threat-led penetration testing at least every three years. Bulgaria is not on the ECB's list of jurisdictions that have adopted TIBER-EU (checked 3 November 2026), so there is no national TIBER-BG guide to follow; banks under direct ECB supervision follow the ECB's own TIBER-EU guide for DORA TLPT, and other identified entities should confirm the process with their Bulgarian supervisor. Personal data that testers see falls under the GDPR and Bulgaria's Personal Data Protection Act, supervised by the Commission for Personal Data Protection, so set retention and deletion terms for test evidence. For public-sector or tender-driven work, check early whether reports and contract documents must be in Bulgarian and whether the bidder needs a Bulgarian legal entity.

Definition

Penetration testing is a structured adversarial security assessment that combines automated vulnerability discovery with manual exploit validation to identify real-world attack paths, validate control effectiveness, and reduce breach probability.

Why Bulgaria Buyers Evaluate Penetration Testing Providers Differently

Buyer behavior in Bulgaria is shaped by two overlapping pressures: local governance scrutiny and uneven provider depth. The Cybersecurity Act changes in 2026 widen the scope of entities facing formal cybersecurity obligations, including sectors such as banking, financial market infrastructure, healthcare, digital infrastructure, public bodies, and other essential or important entities, while DORA adds direct resilience-testing relevance for in-scope financial entities.

That means buyers are often selecting a pentest provider not only for engineering value, but also for how well the output will stand up in audit, board, risk, and remediation workflows.

That local context changes vendor selection. Bulgaria buyers often need stronger remediation clarity, cleaner executive reporting, and more explicit methodology than markets where pentesting is already deeply standardized. They also face a practical trade-off between local provider familiarity and the specialist depth sometimes offered by cross-border firms. For cloud-native and API-heavy environments, identity paths, business logic, and release velocity matter more than perimeter scanning alone.

For public-sector, healthcare, infrastructure-sensitive, or finance-sensitive environments, formal scope control and evidence-backed reporting usually matter more than aggressive marketing language.

How We Selected the Top Penetration Testing Companies Bulgaria Buyers Compare in 2026

Our selection criteria favor validated exploitability over scan-heavy output. NIST defines penetration testing as mimicking real-world attacks and notes that effective tests often combine multiple weaknesses to gain more access than a single flaw would allow. OWASP frames web security testing as a structured best-practice discipline, not just an automated scan.

Profiles therefore note where public evidence shows manual testing depth, realistic attack simulation, exploit chaining, or red-team capability, and where public materials lean mainly on generic automation claims. No provider was given a score.

These weights are suggested guidance for buyers building their own vendor scorecard. They were not used to score the providers listed below, and the list order is not a quality ranking: DeepStrike publishes this list and lists itself first.

Provider-level assurance and individual credentials are treated separately. ISO certifications, CREST company accreditation, PCI assessor status, or other organizational credentials are not the same as practitioner certifications such as OSCP, OSWE, OSEP, CREST CRT/CCT, GIAC, CISSP, CEH, or CRTO.

Capabilities not clearly evidenced in reviewed material were treated as unproven. Brand scale was not treated as evidence of testing depth. A large network can improve coverage and governance support, but a smaller specialist can still be the better fit if public evidence shows deeper manual testing, clearer reporting, and stronger cloud/API focus.

How we selected these providers (checked November 2026): The candidate pool combined Bulgarian security firms that publish a penetration-testing service (most are Sofia-based), the Sofia offices of Big Four and other international consultancies, and regional or international specialists and platforms that market testing to Bulgarian buyers. Each profile was rechecked against the provider's own website in November 2026 for its Bulgarian address, published test types, methodology, retesting terms, and named certifications; where a site could not be retrieved (PwC Bulgaria) or did not describe penetration testing (KPMG Bulgaria), the entry says so. This is desk research of public information, not hands-on testing of the providers.

How to Choose the Right Penetration Testing Company in Bulgaria

• Define the real attack surface. Decide whether the scope is external infrastructure, internal networks, web applications, APIs, mobile, cloud, Active Directory, identity, OT, social engineering, red teaming, or a combined engagement.
• Separate scanning from penetration testing. Ask how much of the work is manual and how testers validate exploitability, business logic, authorization flaws, privilege escalation, and chained attack paths.
• Check the assigned testers. Company certifications matter, but buyers should verify who will actually conduct and review the engagement.
• Confirm rules of engagement. Define authorization, test windows, exclusions, production restrictions, escalation contacts, and stop-work conditions.
• Review a sample report. Strong reports should include technical evidence, business impact, prioritization, reproducible findings, and remediation guidance.
• Confirm critical-finding escalation. Severe issues should be reported during testing rather than waiting for the final deliverable.
• Verify retesting terms. Confirm whether remediation validation is included, time-limited, or separately charged.
• Match compliance to the real framework. NIS2/Bulgarian Cybersecurity Act, DORA, PCI DSS, ISO 27001, GDPR, and customer requirements all have different evidence needs.
• Check data-handling and delivery conditions. Cross-border providers should be assessed for tester location, evidence storage, legal jurisdiction, language, and onsite requirements.
• Compare outcome, not headline price. Scope, tester seniority, manual effort, evidence quality, report depth, and retesting matter more than the cheapest quote or the longest tool list.

Top Penetration Testing Companies in Bulgaria for 2026

1. DeepStrike: Application testing and remediation collaboration

Public offering: DeepStrike's penetration testing services describe human-led testing across applications, cloud environments, and infrastructure, supported by a findings and collaboration platform. Its public process covers planning, reconnaissance, vulnerability discovery, controlled exploitation, reporting, and technical support. Published reports include reproduction steps, remediation guidance, and root-cause information; the proposal should define exact coverage and commercial terms.

Bulgaria relevance: Founded in 2016, DeepStrike LLC is headquartered in Newark, Delaware, has 11–50 employees, and also publishes a business address in Dubai, UAE (IFZA Business Park). It delivers testing remotely for Bulgarian clients; define tester locations, permitted subcontracting, and data-handling restrictions in the engagement agreement.

Team certifications: OSCP, OSWE, OSEP, OSWP, GXPN, GWAPT, eCPPT, eMAPT, eWPT, CREST CPSA, CRTP, CRTE, and Microsoft Azure Security Engineer Associate, as shown on DeepStrike's services page.

Official sources: Pricing , Contact Us

Best fit: Engineering teams that need application, cloud, or infrastructure testing with direct remediation collaboration.

2. SoCyber: Sofia-based application and network testing

Public offering: SoCyber lists web application, API, mobile application, network, and wireless penetration testing, automated penetration testing, social engineering, AI and LLM red teaming, and red teaming. Its published process runs from scoping and discovery through assessment and scoring, prioritised remediation, and evidence and reporting, and its site promotes the Kikimora vulnerability management platform.

Bulgaria relevance: SoCyber lists its office at 45A Bulgaria Blvd, Strelbishte, 1404 Sofia. Define who performs the testing, any use of the Kikimora platform for findings data, and data handling in the agreement.

Official sources: https://so-cyber.com/web-app-penetration-testing/; https://so-cyber.com/contact/

Best fit: Bulgarian application-heavy companies that want local web, API, and mobile testing with remediation tracking.

3. PwC Bulgaria: Consulting and risk services

Public offering: PwC Bulgaria's cyber security pages could not be retrieved for this review in November 2026, so we cannot confirm the penetration testing scope it publishes. Request a detailed methodology, scope, and sample report.

Bulgaria relevance: PwC operates a Bulgaria member firm website. Confirm which team performs the test, whether international PwC teams are involved, how test data is handled, and how audit independence applies if PwC is your auditor.

Official sources: https://www.pwc.bg/

Best fit: Organisations that want security testing bundled with consulting and risk advisory from a Big Four network with Bulgarian operations.

4. LIREX: Long-standing Bulgarian IT and security provider

Public offering: LIREX offers penetration tests that simulate attacks on systems, applications, and data, and positions them against purely automated scanning by adding expert verification of findings and their business significance. Reports rank improvement measures by criticality, and tests can be ordered individually or as a planned programme across the year; LIREX states it has offered penetration testing for more than 10 years, within a wider IT, integrated security, and data protection portfolio.

Bulgaria relevance: LIREX lists its office at Mladost 1, bl. 54A, entrance A, 1784 Sofia. Define tester assignment, testing windows, and data handling in the agreement.

Official sources: https://lirex.com/bg/integrirana-sigurnost/sigurnost-na-danni/testove-za-probiv-v-sigurnostta/; https://lirex.com/bg/kontakti/

Best fit: Bulgarian enterprises that want penetration testing from a long-established local IT and security provider.

5. AMATAS: CREST-accredited testing with managed security services

Public offering: AMATAS lists web and API, mobile, desktop, cloud, network, and Wi-Fi penetration testing. Its web and API service is described as manual-first, with Essential, Elite (fully manual), and Continuous (via the Plainsea platform) options, and deliverables include CVSS-ranked findings with reproduction steps, an executive summary, an attack path map, and retesting at no extra cost with a signed completion certificate. Its wider portfolio covers MXDR, vCISO, virtual DPO, security awareness, managed IT, incident response, and NIS2 compliance.

Bulgaria relevance: AMATAS lists its Sofia office at 141 Tsarigradsko shose Blvd, 1784 Sofia, and offers a NIS2 compliance service for Bulgarian organisations. Confirm the contracting entity, tester locations, and data handling in the agreement.

Certifications: AMATAS states it is CREST-accredited for penetration testing and displays ISO/IEC 27001, ISO/IEC 20000, and ISO 9001 logos; it names individual team certifications including CISSP, CEH, CCSP, and CCSK.

Official sources: https://amatas.com/services/cybersecurity-testing/web-api-penetration-testing-services/; https://amatas.com/about-us/dont-know-where-to-start-with-cyber-security-get-in-touch-with-us-amatas/

Best fit: Organisations that want accredited penetration testing alongside outsourced security operations or vCISO support.

6. DIGITALL: Penetration testing within a digital transformation and SOC portfolio

Public offering: DIGITALL's cyber security services list posture assessment, penetration testing, security maturity checks, and security consulting, alongside a security operations centre, SOC and SOAR as a service, collaboration and email security, and security awareness and phishing simulation. Its cyber security page does not break penetration testing down by test type or methodology.

Bulgaria relevance: DIGITALL lists a Bulgarian office at Business Park Sofia, Building 15, 5th Floor, Sofia 1766, as well as an office in Frankfurt am Main. DIGITALL was formed in 2021 from the merger of ec4u and Bulpros, backed by private-equity firm Silverfleet Capital. Confirm which team performs the test and how test data is handled in the agreement.

Official sources: https://digitall.com/cyber-security; https://digitall.com/contact-us

Best fit: Large organisations that want penetration testing within a broader SOC or digital transformation relationship.

7. CYBERONE: Local penetration testing with SOC services

Public offering: CYBERONE offers web, external network, and internal network penetration tests, plus threat-led penetration testing. Its web methodology covers reconnaissance, scanning with at least two scanners, manual verification, a checklist-based security review, and privilege escalation attempts, with manual testing prioritised; reports include remediation recommendations and a management summary, and a free retest of the original scope is offered within 6 months. It also provides SOC as a service.

Bulgaria relevance: CYBERONE (Cyber One EOOD) lists its office at 93B Simeonovsko Shose Blvd, Sofia, and offers internal testing on site or via VPN. Define tester assignment and data handling in the agreement.

Official sources: https://cyberone.bg/penetration-tests; https://cyberone.bg/contacts

Best fit: Bulgarian SMEs and mid-sized organisations that want local network and web testing with free retesting and SOC support.

8. Atlant Security: Founder-led penetration testing and security audits

Public offering: Atlant Security offers manual, expert-led penetration testing of web applications, APIs (REST, GraphQL, gRPC), SaaS and multi-tenant platforms, mobile apps, external and internal networks with Active Directory, and AWS, Azure, and GCP cloud environments, including bank and DORA TLPT variants. It follows NIST SP 800-115 and delivers a findings register, an executive summary mapped to regulatory clauses, a remediation workshop, an attestation letter, and one free retest; it publishes fixed-price scopes.

Bulgaria relevance: Atlant Security's Bulgarian site states the company was founded in Sofia, but neither site shows a street address. Confirm the contracting entity, tester assignment, and data handling in the agreement.

Official sources: https://www.atlantsecurity.com/penetration-testing; https://www.atlantsecurity.com/contact

Best fit: SMBs and SaaS or fintech companies that want founder-led testing with compliance-ready reporting and fixed scopes.

9. BaseLine: Penetration testing with a 24/7 SOC

Public offering: BaseLine offers web application (OWASP Top 10, business logic, authentication), external and internal network, API (REST, GraphQL, WebSocket), and social engineering testing. Its five-phase method runs from reconnaissance through exploitation and post-exploitation to reporting, with an executive summary, proof-of-concept and reproduction steps, CVSS scores, a remediation guide, and a free re-check after critical findings are fixed. It also runs SOC as a service with 24/7 monitoring.

Bulgaria relevance: BaseLine (IT Baseline OOD) lists its office at 98 Pirotska St, Sofia, and states it has offered cybersecurity services since 2006. Define tester assignment and data handling in the agreement.

Official sources: https://www.baselineit.eu/penetration-testing; https://www.baselineit.eu/contact

Best fit: Bulgarian SMEs and mid-market companies that want local testing with SOC follow-through.

10. Cyberware: Autonomous and AI-assisted penetration testing

Public offering: Cyberware offers autonomous penetration testing and penetration testing that combines human expertise with AI and threat intelligence to simulate adversary behaviour. It also provides security code review against the OWASP Top 10, governance, risk and compliance assessments, and audit-ready reports mapped to compliance standards.

Bulgaria relevance: Cyberware lists its address at 46 Okolovrasten pat, Sofia. Confirm human oversight of automated testing, data handling for AI-assisted analysis, and tester locations in the agreement.

Official sources: https://getcyberware.com/en/penetration-testing; https://getcyberware.com/en/contact

Best fit: High-change software teams evaluating autonomous testing alongside conventional penetration testing.

11. CyberXperts: Security validation and MXDR

Public offering: CyberXperts' Security Testing & Validation service covers posture assessments and penetration testing of infrastructure, Active Directory, APIs, web applications, and mobile applications, plus attack surface management and internal breach and attack simulation. It also offers managed extended detection and response (MXDR) with 24/7 monitoring.

Bulgaria relevance: CyberXperts lists its address at Business Park Sofia, Building 14, Floor 3, Sofia 1766, and states it was founded in 2025. Define tester assignment and data handling in the agreement.

Official sources: https://cyberxperts.com/#services; https://cyberxperts.com/#contacts

Best fit: Bulgarian businesses that want penetration testing, attack surface management, and managed detection from one provider.

12. EY Bulgaria: Cybersecurity consulting and managed services

Public offering: EY's cybersecurity services, published on its Bulgaria website, cover identity and access management, cyber risk, compliance and resilience, data protection and privacy, security operations and response, cybersecurity transformation, and managed services including threat exposure management. The pages reviewed do not name penetration testing, so confirm whether it is offered through EY in Bulgaria and on what scope.

Bulgaria relevance: EY operates a Bulgaria website with Sofia-based leadership, but the pages reviewed do not show a street address. Confirm the delivering EY entity, tester locations, and data handling, and check audit independence if EY is your auditor.

Official sources: https://www.ey.com/en_bg/services/cybersecurity; https://www.ey.com/en_bg/about-us/connect-with-us

Best fit: Large organisations that want security testing within a broader cybersecurity transformation or managed services programme.

13. Deloitte Bulgaria: Cyber services within Deloitte Central Europe

Public offering: Deloitte's Central Europe cyber pages, linked from its Bulgaria site, list cyber defence and resilience services including attack surface management with offensive security practices such as penetration testing, managed extended detection and response covering cloud and OT, and incident response. The pages reviewed do not describe a penetration testing methodology, so request one with a sample report.

Bulgaria relevance: Deloitte Bulgaria lists its office at Green Tower, 4 Mihail Tenev St, 12th floor, Sofia 1784. Confirm whether the assigned testing team is Bulgaria-based or regional, how test data is handled, and how audit independence applies if Deloitte is your auditor.

Official sources: https://www.deloitte.com/ce/en/services/consulting/services/cyber-defense-resilience.html; https://www.deloitte.com/ce/en/contact/contact-us.html

Best fit: Large organisations that want penetration testing tied to attack surface management and managed detection within a Big Four programme.

14. KPMG Bulgaria: Advisory-led cyber services

Public offering: KPMG Bulgaria's website lists consulting, deal advisory, and public sector advisory services; the pages reviewed do not describe penetration testing, red teaming, or vulnerability assessment services in detail, so request the testing methodology, scope, and a sample report.

Bulgaria relevance: KPMG Bulgaria lists offices at 45A Bulgaria Blvd, Sofia, and 3 Sofia Street, Varna. Confirm which team performs the test, whether testing is subcontracted to other KPMG member firms, and how audit independence is handled if KPMG is also your auditor.

Official sources: https://kpmg.com/bg/en/services/advisory.html; https://kpmg.com/bg/en/misc/generic-contact-page.html

Best fit: Organisations that want security testing coordinated with audit, risk, and advisory work.

15. SM Tech: Aviation-focused cybersecurity consultancy

Public offering: SM Tech lists penetration testing and vulnerability assessment among its services and focuses on aviation cybersecurity. Its site gives no detail on test types, methodology, or deliverables, so request a test plan, tester profiles, and a sample report.

Bulgaria relevance: SM Tech lists Sofia, Bulgaria, as its location and publishes a Bulgarian phone number, but no street address. Confirm the contracting entity, tester assignment, and data handling in the agreement.

Official sources: https://smtech.bg/

Best fit: Aviation-sector organisations that want a specialist consultancy for security testing.

16. Plainsea: Agentic penetration testing platform

Public offering: Plainsea describes itself as an agentic penetration testing platform that combines autonomous AI reasoning with human control, used by in-house security teams and professional pentesters to run human-led, AI-assisted, or autonomous engagements. Published capabilities include continuous exposure validation, multi-step attack path execution, remediation verification through retesting, and standardised reporting.

Bulgaria relevance: Plainsea lists offices in Seattle, Framingham (Massachusetts), and Sofia, and states it is part of Ocean Investments. AMATAS lists Plainsea among the products on its own website and its About page also refers to Ocean Investments, so treat AMATAS’s Continuous option and Plainsea as related rather than independent vendors. Because it is a platform, confirm who operates tests, where data is processed, and what human validation applies in the agreement.

Official sources: https://plainsea.com/platform; https://plainsea.com/#book-a-demo

Best fit: Security teams and pentest providers that want to automate parts of the testing workflow.

Comparison Table

What Buyers in Bulgaria Get Wrong When Comparing Penetration Testing Firms

The biggest comparison error is treating pentesting as a brand purchase instead of a methodology purchase. Large firms can be useful for enterprise governance, but they do not automatically deliver deeper exploit validation. A second mistake is overvaluing automation. Vulnerability assessment has value, but it is not the same as testing whether chained weaknesses can actually produce administrative access, material data exposure, or control failure.

A third mistake is ignoring reporting quality. In Bulgaria’s more audit-sensitive buying environment, a vague PDF with weak remediation guidance can create as much friction as the vulnerabilities themselves.

A fourth mistake is assuming local presence automatically means better fit. Local presence can help procurement, meetings, language and onsite execution, but it does not prove stronger application, cloud, API, identity or red-team expertise.

A fifth mistake is comparing companies and platforms as if they are interchangeable. Cyberware and Plainsea demonstrate how automation is changing the market, but a platform-led model should be compared differently from a senior-led manual consultancy.

Enterprise vs SMB: Which Type of Penetration Testing Company Do You Need in Bulgaria?

Enterprise buyers usually need more than technical findings. They often need formal scoping, executive-ready reporting, standards language, red-team options, OT/cloud coverage, and coordination across multiple stakeholders. That tends to favor providers such as PwC Bulgaria, DIGITALL, EY or Deloitte on governance and program breadth, while firms such as DeepStrike, SoCyber or LIREX can be attractive when manual application, API and exploit-validation depth are the deciding factors.

SMB and mid-market buyers in Bulgaria usually need tighter scoping discipline. Overbuying a heavyweight firm for a narrow application or infrastructure review can reduce commercial efficiency. BaseLine, Atlant Security, CYBERONE, CyberXperts and SM Tech can make sense where local support and operational continuity matter.

Cross-border execution is acceptable when the provider’s reporting, communication model and modern testing depth are stronger than what is locally available, and when onsite, Bulgarian-language, residency or public-sector requirements are not mandatory.

What Influences Penetration Testing Cost in Bulgaria?

Penetration testing cost in Bulgaria is driven mainly by scope and depth, not geography: the number and type of assets, the manual validation effort, the testing perspective, and whether retesting and audit-ready reporting are included. Ask every bidder to price the same defined scope rather than comparing headline day rates or generic market averages.

The most important drivers are the number and type of assets in scope, whether the work is web, API, mobile, cloud, internal infrastructure, Active Directory or identity-focused, whether testing is black-box, gray-box or white-box, how much manual validation is required, whether social engineering or red-team elements are included, how complex third-party integrations are, and whether re-testing, attestation or board/audit-ready reporting is part of the deliverable.

Continuous and autonomous models also change buying logic because they price for change velocity and repeated validation rather than a single snapshot in time.

Buyers in Bulgaria should therefore request scope-based proposals and explicitly clarify re-testing, reporting format, tester seniority, evidence handling and onsite needs instead of benchmarking on generic market averages.

FAQs

How much do penetration testing services cost in Bulgaria?

There is no reliable Bulgaria-wide benchmark that should drive procurement on its own. Cost depends on scope, attack-surface type, manual depth, evidence requirements, retesting terms, and whether the model is one-off, continuous, or platform-led.

What is included in enterprise penetration testing?

At minimum, enterprise work should include scope definition, rules of engagement, testing, exploit validation, prioritized findings, remediation guidance, and stakeholder-ready reporting. Depending on need, it may also include red team, social engineering, source-code review, cloud, identity, OT, or re-testing.

Are certifications more important than tools?

Neither alone is enough. Relevant certifications help validate practitioner background, while company-level accreditations provide organizational assurance. Buyers should still confirm who performs the work, how findings are validated, and whether the provider can test business logic and chained exploit paths.

How often should testing be performed, and how long does it take?

Frequency and duration depend on risk and change velocity. Point-in-time engagements can be short when scope is narrow, while high-change SaaS and API environments may justify more frequent or release-driven testing. Regulatory or contractual requirements should be evaluated separately.

Is penetration testing required for GDPR, NIS2, DORA, or PCI DSS?

Not universally. GDPR is risk-based. Bulgaria’s Cybersecurity Act was amended in February 2026 to transpose NIS2 and applies based on entity type, sector and scope. DORA applies to in-scope financial entities and includes digital operational resilience testing. PCI DSS contains more explicit penetration-testing requirements for applicable cardholder-data environments.

Should Bulgaria buyers choose a local provider or a cross-border specialist firm?

Choose by delivery fit, not geography alone. Local firms can simplify governance, language, meetings and onsite execution. Cross-border specialists can be the better choice when manual cloud, API, product-security or exploit-chaining depth is stronger and the engagement does not require confirmed local-office or residency conditions.

Bottom Line

The Bulgaria penetration-testing market includes local specialists such as SoCyber, LIREX, AMATAS, CYBERONE, Atlant Security, BaseLine, Cyberware, CyberXperts and SM Tech alongside enterprise providers such as PwC Bulgaria, DIGITALL, EY Bulgaria, Deloitte Bulgaria and KPMG Bulgaria, while Plainsea represents the emerging AI-assisted testing-platform segment.

The strongest choice depends on what the buyer actually needs. A cloud-native product team may care most about API, IAM and remediation speed. A bank may prioritize board-ready evidence, DORA/TLPT capability and supplier governance. A Bulgarian SMB may value local communication and practical remediation more than multinational scale.

DeepStrike, the publisher of this guide, is listed first for human-led application, cloud, and infrastructure testing with remediation collaboration. Its services include web application testing, mobile testing, cloud penetration testing, continuous penetration testing, and red teaming. Bulgaria buyers with strict local delivery, Bulgarian-language, public-sector, audit-heavy or long-term managed-security requirements may reasonably prefer one of the Bulgaria-based providers above.

For buyers searching top penetration testing companies in Bulgaria online, market visibility alone is not enough. The more reliable shortlist comes from a structured comparison of methodology, exploit-validation depth, cloud and API maturity, reporting quality, re-testing terms, and actual delivery fit for Bulgaria-based operations.

About the Author

Mohammed Khalil is a Cybersecurity Architect at DeepStrike, specializing in advanced penetration testing and offensive security operations. With certifications including CISSP, OSCP, and OSWE, he has led numerous red team engagements for Fortune 500 companies, focusing on cloud security, application vulnerabilities, and adversary emulation. His work involves dissecting complex attack chains and developing resilient defense strategies for clients in the finance, healthcare, and technology sectors.

Technical Review: DeepStrike Offensive Security Team