DEFENSE-IN-DEPTH / FREE DAST AUDITOR

Free HTTP Security Headers Scanner & Observatory A+ Analyzer

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

NON-DESTRUCTIVE DAST AUDIT // ZERO INSTALLATION RFC & NCSC BASELINE ALIGNED

Quick Test:

✓ Read-Only Socket Handshake ✓ 10-Second Executive Breakdown ✓ CMA 1990 Statutory Safe

Live Perimeter Audit:

--/100 PASS

Security Pillar	Status	Inspection Telemetry

Need 24/7 autonomous monitoring & 1-click healing for this domain? Protect Fleet (£19/mo) →

Core Headers (6)

HSTS, CSP, XFO, Nosniff, Referrer, Permissions

Target Rating

Observatory A+ / 100% Score

Inspection Protocol

Heuristic DAST Scanner

Remediation

1-Click OhmHeal Autonomic Patch

Why Missing Security Headers Exposes Endpoints to Automated Crawlers

Over 85% of websites fail standard security header audits. Missing headers allow MIME-type sniffing, cross-site leaks, credential exfiltration, and drive-by downloads. Implementing all 6 core headers immediately elevates your site to a Mozilla Observatory A+ grade and satisfies UK statutory requirements.

Production-Ready Remediation Snippets

Select your deployment environment below and copy the tailored configuration snippet to enforce compliance immediately:

Nginx

# /etc/nginx/conf.d/complete_headers.conf
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "SAMEORIGIN" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;
add_header Permissions-Policy "camera=(), microphone=(), geolocation=(), payment=()" always;
add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:;" always;

Frequently Asked Questions

What is the fastest way to get an A+ security header rating?

Install Helmet in Node.js or paste OhmCode’s pre-compiled Nginx configuration snippet. It takes under 60 seconds to configure all 6 headers.

Does adding security headers slow down my website?

No. Security headers add less than 1 kilobyte to response headers and have zero impact on server latency or rendering speed.

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

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