ATLANT
SECURITY
·
FOUNDER-LED
SINCE
2013
Top Cybersecurity Companies & Services A working directory of security services, compliance programmes and independent buyer's guides. Every entry links straight to the detail, so you can scope the work without a sales call first.
200+
14
2013
security assessments
countries
practising since
INSIDE
Virtual CISO services · IT security audit · penetration testing · SOC 2, ISO 27001, HIPAA, PCI DSS, GDPR, DORA, NIS 2 · threat-led penetration testing · regional regulator programmes · and the independent rankings of the top cybersecurity companies, computer security companies and IT security audit firms.
ATLANTSECURITY.COM
CONTENTS
What is in here, and how to use it Every heading in this document is a live link. Open the one that matches the problem in front of you: an auditor asking a question, a customer holding up a deal, or a regulator with a date on it.
Core security services
PAGE 03
Compliance & frameworks
PAGE 04
Penetration testing & TLPT
PAGE 05
Built for your situation
PAGE 06
Regional regulator programmes
PAGE 07
Independent buyer's guides
PAGE 08
The questionnaire cheat-sheet
PAGE 09
Where to start
PAGE 10
THE
SHORT
VERSION
Atlant Security is a founder-led practice. 200+ security assessments across 14 countries since 2013. Every engagement is run by the person you meet on the first call: no account managers, no junior bench. Assessments are fixed-price and you read the report before you pay for it. Start with all cybersecurity services or go straight to book a scoping call.
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01
·
CORE
SECURITY
SERVICES
The work most companies come for Virtual CISO services, IT security audit and penetration testing are the three engagements that solve the most common problems: no security leadership, no evidence, and no idea what an attacker would actually find.
Virtual CISO Services Security leadership on retainer. Board reporting, roadmap and the person who faces your auditor. atlantsecurity.com/virtual-ciso-services
IT Security Audit 20-domain assessment, board-ready report in 14 days. Pay after you read it. atlantsecurity.com/it-security-audit
Penetration Testing Manual-first testing across web, API, network, mobile, cloud and SaaS. atlantsecurity.com/penetration-testing
Cyber Security Consultant Know exactly what is broken in 14 days, with the fix plan attached. atlantsecurity.com/cyber-security-consultant
Cloud Security Consulting AWS, Azure, GCP and Microsoft 365 hardened against the misconfigurations that actually get exploited. atlantsecurity.com/cloud-security-consulting
Vulnerability Assessment Find it, rank it, fix it. A repeatable programme, not a one-off scan. atlantsecurity.com/vulnerability-assessment
Part-Time CISO A named CISO for companies that need the function, not the headcount. atlantsecurity.com/part-time-ciso
Computer Security Consultant Every way into your business, found and closed. atlantsecurity.com/computer-security-consultant
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02
·
COMPLIANCE
&
FRAMEWORKS
The certificate is not the point. Passing on the first attempt is. SOC 2, ISO 27001, HIPAA, PCI DSS, GDPR Article 32, DORA and NIS 2 readiness, run so the evidence exists before the auditor asks for it. ▸
SOC 2 Compliance
▸
DORA Compliance
▸
SOC 2 Readiness
▸
NIS 2 Compliance
▸
ISO 27001 Readiness
▸
TISAX Compliance
▸
ISO 27001 Internal Audit
▸
CSA STAR Level 2
▸
ISO 42001 (AI) Readiness
▸
Cyber Resilience Act
▸
HIPAA Compliance
▸
NIST SP 800-82 OT Audit
▸
PCI DSS Compliance
▸
NAID AAA Risk Assessment
▸
GDPR Article 32 Assessment
▸
eIDAS Compliance
▸
External DPO
▸
Cybersecurity Risk Assessment
READINESS
ASSESSMENT
Controls built, evidence collected, policies written and
An independent read of where you actually stand, with
the auditor coordinated. You reach the audit already able
the gaps ranked. Fixed price, and you read the report
to pass it.
before you pay.
FREQUENTLY
PAIRED
SOC 2 compliance with ISO 27001 readiness shares roughly two-thirds of its control work. DORA and NIS 2 overlap on incident reporting and third-party risk. Doing them together is materially cheaper than doing them in sequence.
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PENETRATION
TESTING
Manual-first testing, and the regulated kind Scanners find what scanners find. Every engagement below is driven by a human who chains findings into the attack path that actually matters.
Threat-Led Penetration Testing (TLPT) DORA Article 26. Control team, validated scope, 12-week red team, attestation. atlantsecurity.com/tlpt-threat-led-penetration-testing
Web Application Penetration Testing OWASP Top 10, business logic, auth bypass. Manual-first. atlantsecurity.com/web-penetration-testing
API Penetration Testing Up to 50 endpoints, auth and authorisation abuse, rate limits. atlantsecurity.com/api-penetration-testing
Network Penetration Testing External and internal, including Active Directory attack paths. atlantsecurity.com/network-penetration-testing
Mobile App Penetration Testing iOS and Android plus the API behind them. atlantsecurity.com/mobile-app-penetration-testing
Cloud Penetration Testing IAM privilege escalation, storage exposure, container escape. atlantsecurity.com/cloud-penetration-testing
SaaS Platform Penetration Testing Multi-tenant isolation and the tenancy boundary. atlantsecurity.com/saas-penetration-testing
SaaS Security Audit The whole stack, every layer, every vector. atlantsecurity.com/saas-security-audit
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·
BUILT
FOR
YOUR
SITUATION
Same discipline, different pressure A SaaS company stuck in enterprise security review has a different problem from a fintech facing a regulator, or a founder whose personal accounts are the way in.
Cybersecurity for SaaS (Virtual CISO) Close enterprise deals stuck in security review. atlantsecurity.com/saas-virtual-ciso
Fintech Virtual CISO Regulator-facing security leadership for payments and banking. atlantsecurity.com/fintech-virtual-ciso
Ecommerce Cybersecurity Checkout, admin panel and customer data on any platform. atlantsecurity.com/ecommerce-cybersecurity-services
Cybersecurity for Startups Pass enterprise due diligence without a security team. atlantsecurity.com/cybersecurity-for-startups
Cybersecurity for Small Business Enterprise-grade coverage, scoped for a business your size. atlantsecurity.com/cybersecurity-services-small-business
Personal Cybersecurity Consultant For executives, founders and families who are targets personally. atlantsecurity.com/personal-cybersecurity-consultant
Digital Wallet Security Wallet and the infrastructure around it, tested before someone else does. atlantsecurity.com/digital-wallet-security
AI Incident Response When the attacker is an AI agent and ordinary forensics miss it. atlantsecurity.com/ai-incident-response
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·
REGIONAL
REGULATOR
PROGRAMMES
Named frameworks, named supervisors Gulf, Asian and European regulators each publish their own control set. These are the programmes we run against the actual document the supervisor reads. ▸
SAMA CSF (Saudi Arabia)
▸
Dubai ISR
▸
NCA ECC (Saudi Arabia)
▸
Qatar NIA
▸
Aramco CCC / SACS-002
▸
HKMA C-RAF (Hong Kong)
▸
NESA / UAE IA
▸
MAS TRM (Singapore)
▸
ADHICS (Abu Dhabi Health)
▸
BNM RMiT (Malaysia)
CITY
&
COUNTRY
BUYER'S
GUIDES
Independent write-ups of the security market in each location. ▸
Cybersecurity Companies in New York
▸
Top Cybersecurity Companies in Dubai
▸
Cybersecurity Companies in San Francisco
▸
Cybersecurity Companies in Abu Dhabi
▸
Cybersecurity Companies in Boston
▸
Cybersecurity Companies in Riyadh
▸
Cybersecurity Companies in Austin
▸
Cybersecurity Companies in Singapore
▸
Cybersecurity Companies in Seattle
▸
Top Cybersecurity Firms in Hong Kong
▸
Cybersecurity Companies in Atlanta
▸
Cybersecurity Companies in Luxembourg
▸
Cybersecurity Companies in Washington, D.C.
▸
Security Companies in Qatar
WHY
A
REGIONAL
PROGRAMME
DIFFERS
Gulf and Asian regulators publish prescriptive control
USUALLY
ASKED
ALONGSIDE
▸
Cybersecurity risk assessment
▸
Penetration testing evidence
▸
A named security officer
▸
Incident reporting readiness
catalogues, and the supervisor assesses against the catalogue, not against a generic framework. Mapping an existing ISO 27001 programme across usually covers 50 to 70 per cent of the work. The remainder is local: data residency, named officers, in-country reporting lines and the specific evidence formats the regulator expects.
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·
INDEPENDENT
BUYER'S
GUIDES
Who is actually good, and how to tell Rankings and comparisons of the top cybersecurity companies, computer security companies, IT security audit firms and virtual CISO providers. Written to be useful whether or not you hire us. ▸
Top 45 Cybersecurity Companies You Should Know in 2026
▸
Top 15 Computer Security Companies for 2026
▸
Top 15 Cybersecurity Firms, Ranked for 2026
▸
Top 15 Security Audit & IT Security Audit Companies
▸
Top 15 Virtual CISO Companies for 2026
▸
Top 20 IT Security Companies for 2026
▸
Top Cybersecurity Consultant Companies: 2026 Ranking
DEEP
▸
Top SOC 2 Compliance Companies (2026)
▸
Top NIST 800-53 & 800-171 Compliance Companies
▸
CMMC Compliance Companies: Who Gets You AuditReady?
▸
Ecommerce Cybersecurity Companies: Top 25 Providers
▸
Top 25 Cybersecurity Companies in Europe for 2026
▸
Best Cybersecurity Audit Companies
▸
Cybersecurity Consulting Services: Complete 2026 Guide
READING
▸
Vanta vs vCISO: Where SOC 2 Automation Ends
▸
The Google Workspace Security Audit Checklist
▸
DORA for SaaS Companies
▸
Cybersecurity Maturity: NIST CSF vs CMMI
▸
NIS2 for SaaS Companies
▸
Most Secure Messaging App in 2026: 7 Ranked
▸
Top 5 vCISO Services for EU FinTech (DORAReady)
▸
Cybersecurity for Fintech Companies: Complete Guide
▸
Top 5 vCISO Services for AI and LLM Companies
▸
ISAE 3402 Type 1 vs Type 2: Plain-English Guide
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·
REFERENCE
The 12 questions every enterprise security questionnaire asks Vendor security reviews vary in length, not in substance. These twelve come up almost every time. If you can answer all twelve with evidence, most questionnaires stop being a blocker. Do you have a named person accountable for security? An org chart entry, not a shared inbox. → Virtual CISO
When was your last independent security assessment? They want a third party, not your own IT team. → IT security audit
When did you last run a penetration test? A report with dates, scope and retest evidence. → Penetration testing
Do you hold SOC 2 or ISO 27001? Readiness counts if you can show the roadmap. → SOC 2 readiness
Is MFA enforced on every account, admins included? The single most-checked control on any form. → Covered in the audit
How do you manage vulnerabilities over time? A programme with SLAs beats a one-off scan. → Vulnerability management
Can you restore from backup, and have you tested it? Untested backups fail the question and the incident. → Restore testing
How do you vet and monitor your own suppliers? Increasingly the question that stalls the deal. → Risk assessment
What happens in the first hour of an incident? A named plan, a named person, named timelines. → Incident response
Is customer data encrypted in transit and at rest? Expect follow-ups on key management. → Cloud security
Do your developers get secure coding training? Annual, role-specific, with evidence of completion. → Awareness training
Are you subject to GDPR, DORA or NIS 2? Answer wrong and you inherit someone else's deadline. → GDPR Article 32
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08
·
WHERE
TO
START
Find the sentence that sounds like your week A customer is holding up a deal over security Get the evidence pack that unblocks procurement. → SOC 2 readiness
We have no one accountable for security A named CISO without the headcount. → Virtual CISO services
We do not know what is actually broken A 20-domain audit, board-ready in 14 days. → IT security audit
We need proof an attacker cannot get in Manual-first testing, with the attack path shown. → Penetration testing
A regulator has given us a date DORA, NIS 2, and the regional frameworks. → DORA compliance
Something has already happened Containment, forensics and the reporting clocks. → Incident response
BOOK
THE
CALL
One scoping call, and you leave knowing what to fix first Thirty minutes with the person who would do the work. You get the three most likely ways into your business, a straight answer on whether you can pass the questionnaire in front of you, and what to change this week, whether or not you hire us.
atlantsecurity.com/contact · All services · About Alexander Sverdlov
200+ security assessments across 14 countries since 2013. Former Microsoft Security Consulting team. Work delivered for banks, payment institutions, government bodies and critical infrastructure operators.
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