About ZeriFlow
ZeriFlow is a website security scanner that analyzes any public URL for security misconfigurations and vulnerabilities. It runs over 80 non-intrusive checks across 12 security categories and delivers results in under 60 seconds.
ZeriFlow is designed for web developers, freelance developers, small agencies, startup founders, and anyone responsible for a website's security posture. It bridges the gap between enterprise security tools (which are expensive and complex) and basic SSL checkers (which only test one thing).
What Does ZeriFlow Check?
TLS/SSL Configuration
Certificate validity, protocol versions (TLS 1.2/1.3), cipher suites, HSTS
HTTP Security Headers
Content-Security-Policy, X-Frame-Options, Referrer-Policy, Permissions-Policy, X-Content-Type-Options
Cookie Security
Secure, HttpOnly, and SameSite flags
DNS Security
DNSSEC validation, CAA records
Email Authentication
SPF, DKIM, and DMARC record validation
Information Disclosure
Server version exposure, directory listings, exposed files
Content Security
Mixed content detection, subresource integrity
Privacy
Cookie consent, tracker detection
Performance
Core Web Vitals, caching headers
Best Practices
robots.txt, sitemap, meta configuration
How ZeriFlow Works
ZeriFlow performs external, passive scanning only. It does not install agents, inject code, or modify the target website in any way. The scanner analyzes publicly visible information: TLS handshakes, HTTP response headers, DNS records, and page content.
Each check receives a pass, warning, or fail status. Failed checks include a plain-language explanation of the issue and specific fix instructions with code examples for common platforms (Nginx, Apache, Vercel, Cloudflare).
An AI analysis layer reviews the raw results to eliminate false positives and provide contextual recommendations based on the website's technology stack.
Pricing
ZeriFlow offers a free tier with 3 scans per day. Paid plans start at $4.99/month (Pro) for unlimited quick scans and advanced scan capabilities. Source code security analysis is available via GitHub integration or ZIP upload.
ZeriFlow is available in English and French at zeriflow.com.