10,000 WordPress Sites: What We Found in Malware Scans

The Scope of the Research

In August 2026, the Nexura Security Threat Intelligence team conducted a massive automated scan across 10,000 randomly selected WordPress installations. Our goal was simple: to determine exactly how modern WordPress malware operates and where existing security solutions are failing.

Key Findings: The Infection Vectors

The data revealed a startling reality about how sites are compromised today. It's not zero-day exploits in core WordPress that are the biggest threat; it's the ecosystem.

Why Regex Scanners Missed 40% of Payloads

During our research, we ran traditional regex-based malware scanners against the infected sites. Shockingly, they completely missed 40% of the active backdoors. Why? Because hackers are using complex obfuscation techniques like variable variables and multi-stage base64_decode chains that regex patterns cannot reliably match.

This research underscores the critical need for AST (Abstract Syntax Tree) Tokenizer scanning, which reads the actual execution logic of the code rather than just string matching.