The Call

Client woke up to a nightmare: Google Search Console showing 875,000 indexed pages. Real site: 5 pages. Thousands of spam URLs. Server load 90%+ from bot hammering. Crawlers couldn't be stopped, legitimate traffic dying.

What Happened

SEO spam injection attack. Attackers created hundreds of thousands of spam URLs (casino, pharmaceutical, cheap products). Google dutifully indexed all of them. Legitimate pages drowning in results. Bots crawling at scale.

What We Found

SEO spam injection in URL parameters
No rate limiting (bots flooding server)
No bot detection or blocking
Weak security headers
No spam URL patterns in robots.txt or sitemap

What We Built

410 Gone Responses — Nginx rules for spam patterns, return 410 (not 404) for faster de-indexing

Bot Filtering — User-agent blocking for known malicious crawlers

Rate Limiting — Nginx limit_req_zone to throttle repeat offenders

Security Headers — CSP, X-Frame-Options, X-Content-Type-Options, HSTS

Firewall Rules — Cloudflare WAF rules for known bad IPs

Sitemap Cleanup — Regenerated sitemap with only legitimate pages

Tech Stack

Nginx, Cloudflare, custom Python monitoring script

Timeline

Deployed fixes: 4 hours. De-indexing: 2–4 weeks after 410 responses propagated.

Outcome

Spam URLs removed from index within 2–4 weeks
Server load reduced ~80%
Malicious bot traffic blocked
Monitoring dashboards live

Quote

"Diagnosed and fixed the entire incident within a day. Professional and fast." — CTO, E-commerce Company

875,000 Spam URLs Cleaned in 24 Hours