Exposed Hacker Server Reveals WP-SHELLSTORM Backdooring Thousands of WordPress Sites
Jul 10, 2026
Cybercrime / Website Security
A cybercrime crew left one of its own servers wide open on the internet for three weeks, and it exposed the operation's inner workings: the hacking tools, the activity logs, and target lists naming more than 1.4 million websites. Far fewer were actually broken into, but the exposed files showed researchers how a mass site-hacking operation runs from the inside. The operation, now tracked as WP-SHELLSTORM , is what SOCRadar calls a webshell access brokerage: a crew that breaks into sites at scale, plants a hidden backdoor (a "webshell") on each, and packages that access for resale. The strongest activity hit WordPress sites running out-of-date plugins. If you run WordPress or Joomla, the two flaws that mattered most were in the Breeze caching plugin and Joomla's JCE editor; skip to the checklist below if that's you. A forgotten server Two teams dug into the same exposed folder. SOCRadar's threat intelligence team spotted it on June 11, 2026, on a U...