What this page helps you understand
Modern web apps combine static assets, APIs, sessions, redirects, and third-party scripts. Fixnx reviews the visible web surface and turns technical signals into practical recommendations.
What this scan checks
Browser-rendered pages
Headers
Cookies
Forms
API routes
Client-side exposure
What a web security scanner should explain
A good web security scanner should tell a story: what was tested, what was proven, what is only suspicious, and what should happen next. Without that structure, teams waste time arguing about noisy results.
Fixnx keeps the report focused on concrete risk. Confirmed vulnerabilities are separated from likely findings and informational coverage notes, so teams can fix the highest-impact issues first.
Run a scan when new pages, APIs, authentication changes, or third-party scripts are deployed.
Example Fixnx finding
Issue: Session-like cookie missing baseline protection
Risk: Medium
Evidence: A sampled Set-Cookie header for a session-like cookie was missing Secure, HttpOnly, or SameSite.
Recommended fix: Set Secure, HttpOnly, and a deliberate SameSite policy on sensitive cookies, then retest login and checkout flows.
Weak cookie flags can increase session theft, cross-site request, or plaintext transport risk depending on the cookie's purpose.
What to fix first
- Critical exposed files, admin panels, secrets, or takeover paths.
- Broken HTTPS, missing redirects, weak SSL/TLS behavior, or unsafe cookie handling.
- Confirmed injection, XSS, access-control, authentication, or sensitive API evidence.
- High-impact security headers and browser protections that reduce attack impact.
- Medium and low hardening recommendations after the risky public evidence is fixed.
Trusted resources behind this guidance
Reference material for responsible web application security testing.
MDN Set-Cookie headerReference documentation for Set-Cookie syntax, attributes, and browser behavior.
MDN secure cookie configurationPractical browser guidance for Secure, HttpOnly, SameSite, expiration, and cookie scope.
Recommended Fixnx path
Follow these related pages to move from the current topic into the right scanner, guide, report, or comparison page without mixing search intent.
Use the main public website scanner hub for vulnerability evidence.
Security Headers ScannerCheck browser protections such as CSP, HSTS, framing, and referrers.
XSS ScannerCheck reflected, stored, and browser-side injection signals.
Website Security Scan GuideUnderstand what a scan checks and how to use the results.
Sample Security ReportSee how Fixnx presents findings, severity, evidence, and fix order.
Run this check on your site
Enter a public URL and get a live Fixnx report with security, SEO, and performance checks.
Only scan websites you own or have explicit permission to test. Fixnx is built for defensive security checks and website protection. Unauthorized scanning may be illegal.
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FAQ
What does a web security scanner check first?
It starts with public pages, browser behavior, headers, forms, exposed files, and discovered API routes.
Why do some findings stay likely instead of confirmed?
Fixnx only marks exploitability as confirmed when the scan collected proof. Strong signals without proof stay likely.
What does Web Security Scanner check first?
It starts with browser-rendered pages, then reviews headers, cookies, and other public signals that can be checked safely from outside the site.
Can I use Web Security Scanner on any website?
Only scan websites you own or have explicit permission to test. Fixnx is built for defensive security checks and website protection. Unauthorized scanning may be illegal.
Does Web Security Scanner prove a site is completely secure?
No. A scan reports the public evidence it collected during a bounded test. It helps you find visible risk, but it cannot guarantee that every private workflow or server-side issue is safe.
Can Fixnx help me understand how to fix the findings?
Yes. Fixnx reports include evidence, severity, confidence, and remediation guidance so owners, developers, and security teams can decide what to fix first.