About 100,000 or more websites running the WordPress content management system have been compromised by mysterious malware that turns the infected sites into attack platforms that can target visitors, security researchers said.
The campaign has prompted Google to flag more than 11,000 domains as malicious, but many more sites have been detected as compromised, according to a blog post published Sunday by Sucuri, a firm that helps website operators secure their servers. Researchers have yet to confirm the cause of the infection, but they suspect it's related to a vulnerability in Slider Revolution, a WordPress plugin, that was disclosed in early September. Update: In a new blog post published after Ars went live with this brief, Sucuri says it has confirmed the so-called "RevSlider" vulnerability is the culprit.
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