At Sucuri, we often encounter cases where malware is deeply embedded in websites, hidden in files and scripts that can easily escape detection. In this article, we'll walk you through a real-life incident where a customer contacted us about unusual behavior on their WordPress website. After a detailed investigation, we uncovered multiple backdoors allowing attackers to execute malicious code remotely.What was discovered?During our scan, we found a suspicious file located in /wp-content/mu-plugins/index.php.Continue reading Hidden Backdoors Uncovered in WordPress Malware Investigation at Sucuri Blog.