Free Website Security Checker & Scanner
Scan any site for missing security headers, insecure cookies, exposed configurations and known vulnerabilities — before an attacker finds them.
Most websites leak their weaknesses in plain sight — in HTTP headers, cookie settings and outdated scripts. The siteIQ Security Checker reads these the same way a security researcher would and tells you what's exposed.
Run a free scan on any URL to see your security headers, cookie protections, HTTPS setup and known library vulnerabilities, with clear remediation steps for each finding.
What this tool checks
Security headers
Content-Security-Policy, HSTS, X-Frame-Options, X-Content-Type-Options and more.
Cookie flags
Whether cookies use Secure, HttpOnly and SameSite to resist theft and CSRF.
HTTPS enforcement
That the site forces HTTPS and doesn't serve mixed insecure content.
Known CVEs
Outdated JavaScript libraries with publicly known vulnerabilities.
Information disclosure
Server banners and headers that reveal more than they should.
Why it matters
A missing security header is an open door. Without a Content-Security-Policy you're more exposed to cross-site scripting; without HSTS, users can be downgraded to insecure HTTP; without proper cookie flags, sessions can be hijacked.
These fixes are usually fast and free — a few lines of server config — but they dramatically raise the cost of attacking your site. Security is also increasingly a trust and SEO signal.
How to read your results
- Prioritize High-severity findings first — these are the most exploitable.
- Adding the missing headers (CSP, HSTS, X-Frame-Options) is typically a server-config change you can ship in minutes.
- If a known CVE is flagged, update the affected JavaScript library to a patched version.
- Re-scan after changes to confirm each header now reports correctly.
Frequently asked questions
Does this scan harm the website?
No. siteIQ performs passive, read-only checks — it inspects publicly available headers and responses. It does not attack, probe aggressively, or attempt any exploit.
Can I scan a site I don't own?
You can run these passive header/HTTPS checks on any public URL, since they only read what the server already sends to every visitor. For deeper or authenticated testing, always get permission.
What's a good security score?
Aim to have all critical headers present (CSP, HSTS, X-Frame-Options), HTTPS enforced, secure cookie flags set, and no known CVEs. The report shows exactly what's missing.
Will this find every vulnerability?
No automated scanner can. It catches the common, high-value misconfigurations that affect most sites. For full coverage, combine it with a professional penetration test.
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