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8 FREE AUDITORS / ZERO INSTALLATION

Free Developer & Agency Diagnostic Security Tools

Inspect perimeter headers, validate HSTS preloads, audit CORS policies, detect exposed secrets, and verify UK Cyber Essentials compliance with zero configuration.

HSTS Header Checker & Preload Validator

Validate your Strict-Transport-Security header against NCSC and Google Preload standards.

TRANSPORT SECURITY Open Tool →

CORS Security Misconfiguration Tester

Detect wildcard origin reflections and credential exfiltration vulnerabilities in seconds.

ORIGIN DEFENSE Open Tool →

UK Cyber Essentials Pre-Audit Diagnostic

Audit your web perimeter against the 5 NCSC technical control pillars in 10 seconds.

NCSC BASELINE Open Tool →

Exposed API Key & Secrets Scanner

Scan client bundles and headers for hardcoded secrets before attackers harvest them.

CREDENTIAL SENTINEL Open Tool →

Content Security Policy (CSP) Evaluator

Validate your CSP directives against Cross-Site Scripting (XSS) and code injection.

XSS DEFENSE Open Tool →

SSL/TLS Health & Cipher Suite Inspector

Inspect SSL validity, expiry warnings, and TLS 1.3 cryptographic strength.

CRYPTOGRAPHIC AUDITOR Open Tool →

Clickjacking & X-Frame-Options Tester

Prevent malicious websites from embedding your portal in transparent iframes.

UI REDRESS SENTINEL Open Tool →

HTTP Security Headers Scanner & Observatory A+

Comprehensive audit of all 6 defense-in-depth HTTP transport and privacy headers.

DEFENSE-IN-DEPTH Open Tool →
CONTINUOUS SENTINEL FLEET / UK STATUTORY RESISTANCE

Commercial Subscription Plans

Transparent UK billing with isolated statement descriptors. Cancel anytime with 1 click.

SOLO BUILDERS & DEV TEAMS

Team Sentinel

Stop shipping exposed keys and missing headers in rapid AI builds.

£ 19 /month
⚡ Just 6p / site / day (£1.90/site across 10 domains)
  • Up to 10 Target Domains (6p / site / day · £1.90/mo)
  • Full 12-Engine DAST & AST Code Auditing
  • Instant AI Prompt Remediation Exporter
  • Git Pre-Commit Secret Blocker Hook
MOST POPULAR • DIGITAL AGENCIES & AUDITORS
DIGITAL AGENCIES & AUDITORS

Agency & Compliance

The Retainer Justifier. Audit client sites, prove compliance, and automate remediation.

£ 79 /month
  • Up to 50 Target Domains
  • Signed UK Cyber Essentials Readiness & Alignment Proofs
  • OhmHeal 1-Click Autonomic Secret & Header Patcher
  • OhmGuard AI Prompt Proxy on localhost:8080
  • SARIF 2.1.0 GitHub Actions CI/CD Workflows
REGULATED ENTERPRISE & FLEET OWNERS

Sovereign Enterprise

Statutory security armor for high-stakes regulated UK portals.

£ 299 /month
  • Unlimited Sovereign Asset Fleet
  • Ofsted NMS 24, NHS DSPT & DPA 2018 Statutory Checklists
  • AI Project Manager Telemetry Bus & Autonomic Ingestion
  • Dedicated Incident SLA, Webhook Dispatch & Priority Recovery
STANDARDS & STATUTORY COMPLIANCE FRAMEWORKS:
Cyber Essentials Alignment OWASP Top 10 (2021) UK GDPR / DPA 2018 Ofsted NMS 24 NHS DSPT ISO 27001 Controls
By Tarquin Barnsby · Showcase · Free Tools (8) · Pricing & Plans · Contact Support · Billing via Stripe UK · Terms & Disclaimer · Privacy (UK GDPR) · Computer Misuse Act 1990
Statutory Notice: Independent technical readiness telemetry aligned with NCSC technical controls. Not an official Crown/IASME statutory certification.

Developer Access

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