Free Security Audit Tool
Free tool
A free passive audit runs 18 checks across TLS, security headers and cookies. Paid plans run 35+ passive checks and add CORS, DNS and email (SPF, DKIM, DMARC).
- Security configuration assessment
- Compliance readiness check
- Security posture evaluation
- Risk severity ratings
- Audit-ready reports
No credit card requiredRead-only, no exploitationNo setup or code required
Used by 5,000+ developers and engineering teams
Why security audits matter
Regular security audits help you maintain a strong security posture and prepare for compliance assessments. This tool provides:
- Compliance readiness: Identify gaps before audits and assessments
- Risk management: Understand your security risks and prioritize remediation
- Audit documentation: Generate reports suitable for compliance audits
- Continuous improvement: Track security improvements over time and be alerted of new security issues
- Stakeholder confidence: Demonstrate security commitment to customers and partners
Use this security audit tool for regular assessments, pre-audit preparation, and continuous security monitoring. Combine with professional security assessments for comprehensive coverage.
What to do with audit results
After completing your security audit, use the results to improve your security posture:
- Prioritize findings: Focus on critical and high-risk issues first
- Create remediation plan: Assign owners and set timelines for fixes
- Document improvements: Track remediation progress and maintain audit trail
- Schedule follow-up audits: Regular audits ensure continuous security improvement
- Share with stakeholders: Use reports to demonstrate security commitment
For compliance audits, ensure all findings are addressed and documented. Use audit reports as evidence of security controls and continuous improvement efforts. Consider engaging professional auditors performing PEN-tests for formal compliance validation.
What this security audit covers
Security Configuration Assessment:
- Cookie security
- Security header implementation
- Error handling and information disclosure
- Security configuration quality
Infrastructure Security:
- TLS/SSL configuration and certificate management
- Security headers implementation (CSP, HSTS, etc.)
- Cookie security
- CORS policy configuration
- Server configuration and information disclosure
Compliance Readiness Indicators:
- Technical security controls relevant to PCI DSS
- Transmission security (TLS/SSL) for HIPAA
- Security controls relevant to SOC 2
- Security configuration checks for ISO 27001
- Technical security controls relevant to GDPR
Network & DNS Security:
- Open ports and service exposure
- DNS security configuration (DNSSEC, CAA)
- Email security (SPF, DKIM, DMARC)
- Subdomain takeover risks
- Network security posture
Application Security Configuration:
- Security misconfigurations
- Vulnerable JavaScript libraries (frontend dependencies)
- TLS/SSL encryption configuration
- Overall security posture
How Barrion verifies this
Barrion runs the audit from an external vantage point, so every check reflects what an attacker or auditor sees without credentials. We fetch your site over HTTPS, follow redirects, and capture the full response chain, including headers, certificate metadata, cookie flags, and the rendered DOM. Each signal is then evaluated against current OWASP, NIST, and Mozilla guidance instead of a static snapshot of last year's best practices.
On the network side we resolve your domain, inspect DNS records (CAA, SPF, DKIM, DMARC, MX), and probe the TLS handshake to grade protocol versions, cipher suites, certificate chain validity, and expiry. Open ports and exposed services are correlated with the host to flag unintentional exposure, and subdomains are enumerated to surface takeover risks from dangling CNAMEs.
Findings are deduplicated and scored by severity. The result is a report you can hand to a stakeholder, plus prioritized remediation steps that link straight back to the offending header, certificate, or DNS record so engineers can fix the root cause in minutes.
Tool-specific questions
What's the difference between a security audit and a penetration test?
A security audit evaluates your security controls, policies, and compliance with standards. A penetration test simulates attacks to find vulnerabilities. Audits focus on 'what should be' vs 'what is', while penetration tests focus on 'what can be exploited'. Use audits for compliance and policy review, and use automated security solutions like Barrion for vulnerability discovery.
Can this security audit tool help with compliance requirements?
Yes, our security audit tool helps with compliance requirements like PCI DSS, HIPAA, SOC 2, ISO 27001, and GDPR. It evaluates security controls, identifies gaps, and gives you a report you can share. However, formal compliance validation typically requires professional auditors and internal assessments.
How often should I run security audits?
Run security audits quarterly for ongoing monitoring, before compliance assessments, and after major changes or security incidents. Use Barrion's continuous monitoring for scheduled security checks, up to daily, and get instant alerts when issues are detected.
What makes a good security audit report?
A good security audit report includes executive summary, detailed findings with risk ratings, evidence of security controls, compliance gap analysis, prioritized remediation recommendations, and action plans. Our tool generates comprehensive reports suitable for stakeholders and compliance purposes.
Is this audit tool suitable for enterprise security audits?
Our security audit tool provides a solid foundation for security assessments and can identify many common issues. For enterprise needs, combine with internal security assessments, professional audits, and compliance validation. Use our tool for regular monitoring and pre-audit preparation.
What compliance frameworks does this audit tool cover?
Our security audit tool evaluates technical security controls that are relevant to PCI DSS, HIPAA, SOC 2, ISO 27001, GDPR, and other major compliance frameworks. It checks security configuration requirements common across these standards and identifies gaps in your technical security posture. Note that full compliance requires additional policy, procedural, and organizational controls.
How long does a security audit take?
Most automated security audits complete within 2-5 minutes for single-site assessments. Complex applications may take 5-10 minutes. This is significantly faster than manual audits, which typically take days or weeks depending on scope.
Can I use audit reports for customer security questionnaires?
Yes, security audit reports can help answer customer security questionnaires and demonstrate your security commitment. They provide evidence of security controls and continuous improvement efforts. Supplement with additional documentation as needed for specific requirements.
What should I do if audit findings show compliance gaps?
If audit findings show compliance gaps, prioritize remediation based on risk and compliance requirements. Create a remediation plan, assign owners, set timelines, and track progress. For critical gaps, consider engaging compliance consultants or professional auditors for guidance.
Does this replace professional security audits?
No, our automated security audit tool complements but doesn't replace professional audits. Use it for regular monitoring, pre-audit preparation, and continuous security assessment. Professional audits provide deeper analysis, policy review, and formal compliance validation.
Why Barrion
Built for the engineers who already have enough to fix.
Speed
Fast results
Instant analysis with a detailed report. You see findings as the scan runs, not after.
Coverage
Comprehensive checks
The full passive scan runs 18 checks on the free plan, covering TLS, headers and cookies. Paid plans run 35+ and add CORS, DNS, email auth and more.
Action
Step-by-step fixes
Every finding ships with the exact remediation step for your framework. Hand it to the engineer who owns the surface.
Other tools
More free checks, for the rest of your surface.
Complete Security Scan
Complete website security analysis with comprehensive vulnerability detection
Pre-Pentest Security Scan
Passive scan that catches the misconfigurations a pentester finds first. Use it before a manual engagement to clear the easy issues.
Security Compliance Checker
Run general security checks relevant to PCI DSS, HIPAA, SOC 2, ISO 27001 and GDPR. Findings aren't mapped to specific requirements.
WAF Checker
Detect which WAF or CDN sits in front of your site from the signatures in its response. Passive, no attack payloads.
Security Headers Test
Check your website's HTTP security headers configuration
TLS/SSL Security Checker
Validate your SSL/TLS configuration and certificate setup
FAQ
Frequently asked.
What is Barrion?
Barrion runs continuous, agentic AI penetration tests of web applications and APIs. AI agents test your app the way an attacker would, safely, on a schedule or on demand. Findings are checked against the live app before they're reported, and tracked across runs as new, still open, resolved or regressed. From Standard level up, a security engineer reviews each report. Barrion AB is based in Gothenburg, Sweden. A free passive scan is the quickest way to start.
How safe is Barrion to use for security testing?
AI pentests send real test requests, so they're rate-limited and non-destructive, and you approve the exact scope before a single request goes out. You can point them at staging too. The free passive scan only reads your live app. It never submits forms, brute-forces endpoints or touches anything that changes state, so it's safe to run against production.
What types of security issues does Barrion identify?
AI pentests look for the issues an attacker could exploit, like SQL injection, cross-site scripting and broken access control. Findings are checked against your live app, and confirmed ones come with the request and response that prove them. Anything we couldn't confirm is clearly marked and capped in severity. The passive scan catches misconfigurations in TLS and HTTPS, security headers, cookie flags, CORS policy, DNS records, email authentication (SPF, DKIM, DMARC) and network exposure.
What specific security checks does Barrion perform?
Barrion covers two surfaces. AI pentesting is the active part: specialist agents chain requests to find exploitable flaws such as SQL injection, cross-site scripting and broken access control. Findings are checked against your live app, and confirmed ones come with the request and response that prove them. The passive scan is read-only and safe to point at production. On paid plans it runs 35+ checks (18 on the free plan): transport security (HTTPS, HSTS, TLS version, cipher suites, certificate expiry, hostname and chain validity, OCSP stapling), HTTP response headers (Referrer-Policy, Permissions-Policy, X-Content-Type-Options, Content-Type, server information disclosure), CSP and framing (Content-Security-Policy, bypass detection, Trusted Types, X-Frame-Options), cross-origin policy (COOP, COEP, CORP and the full CORS header set), cookie flags and anti-CSRF tokens, mixed content, vulnerable JavaScript libraries, DNS records including DNSSEC and CAA, email authentication (SPF, DKIM, DMARC), open ports and subdomain takeover. Findings from both are ranked by severity and come with step-by-step remediation.
Will our auditor or enterprise customer accept the report?
The report maps every finding to OWASP WSTG, a security engineer reviews it from Standard up and signs it off from Deep up, and a free retest shows what you fixed. Teams use it as evidence for SOC 2, ISO 27001 and NIS2 work. Whether it's accepted is up to your auditor.
How often does Barrion test my app?
Continuously or on demand. On the Business plan you save a pentest and it reruns daily, weekly, monthly, quarterly, every six months, yearly or on your own rhythm. On any plan you can start a pentest or a passive scan on demand. A passive scan also runs on a schedule and alerts you when something new shows up.
Is Barrion suitable for security testing of all business sizes?
Yes. Solo developers often start with the free passive scan and a single pentest. Teams with several apps run pentests on a schedule, and it fits alongside the tools you already run.
How does Barrion handle data security and privacy during security testing?
Passive scans are read-only: they only look at what your app already exposes publicly. For AI pentests we store the findings and the evidence behind them, the requests and responses that confirm each issue, so you can review and reproduce them. Test credentials you add are encrypted. Data is stored and hosted in Sweden and AI processing runs in the EU. Our trust page lists every subprocessor. Pentests are rate-limited and only run inside the scope you approve.
What if I'm not satisfied with Barrion's security testing service?
You can cancel anytime in the dashboard, and paid plans carry a 14-day refund window from the first charge. If something isn't right, contact us and we'll make it work for your team.
How does Barrion help with SOC 2, ISO 27001, NIS2, and other compliance frameworks?
Barrion's pentest reports come as PDF, XLSX and JSON, mapped to all 97 OWASP WSTG test cases, with engineer review from Standard up, sign-off from Deep up and a free retest after fixes. Teams use them as evidence that supports SOC 2, ISO 27001, PCI DSS and NIS2 work. Whether a report is accepted is up to your auditor or customer.
Anything else? Email contact@barrion.io.
Keep it covered
Fix it once, then watch it stay fixed.
A pentest shows what is exploitable today. A scheduled passive scan re-checks this tool's results and alerts you when a deploy undoes the fix.
What you get for free
18 core security checks via this tool, passive scans, step-by-step remediation, security score on every result.
What Essential adds from €199/mo
Pentest credits every month, +17 advanced checks, weekly passive scans, email alerts and audit-ready PDFs for SOC 2 / ISO 27001 / PCI.