Hackers Deploy Stealth Backdoor in WordPress Mu-Plugins to Maintain Admin Access

Cybersecurity researchers have uncovered a new stealthy backdoor concealed within the "mu-plugins" directory in WordPress sites to grant threat actors persistent access and allow them to perform arbitrary actions. Must-use plugins (aka mu-plugins) are special plugins that are automatically activated on all WordPress sites in the installation. They are located in the "wp-content/mu-plugins"

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