[ CASE STUDY ]

Active SEO Spam Injection & Full Remediation

Client: Automotive industry e-commerce, Colombia, 2026 Service: Web Application Pentest Type: Incident response + DB & file forensics

Executive Summary

A production WordPress e-commerce site was actively compromised. An attacker injected hidden SEO spam into the CMS database across three attack waves, exploiting the client's domain authority to rank 51 illegal gambling domains on Google — invisible to human visitors and monitoring tools for over 2 months.

Findings

Critical: 60 hidden div elements serving 51 gambling domains — undetected for 2.5 months
Critical: 3.8 GB backup file publicly exposed — probable initial access vector
Critical: Admin credentials hardcoded in 13 locations across the codebase
High: Database-level SEO injection persisting across theme and plugin updates
High: Missing integrity monitoring on CMS content tables

Methodology

Database forensics, file integrity analysis, and HTTP response comparison to identify injected content. Attack waves were mapped chronologically. All persistence mechanisms were traced from public backup exposure through database injection to search-engine-visible spam output.

Outcome

All 9 findings remediated in a single session. Eight automated verification checks passed. Hidden spam removed from the database, exposed backup secured, hardcoded credentials rotated, and integrity monitoring recommendations delivered with prioritized remediation steps.