~11,000 sites have been infected with malware that’s good at avoiding detection
Enlarge (credit: CHUYN / Getty Images ) Nearly 11,000 websites in recent months have been infected with a backdoor that redirects visitors to sites that rack up fraudulent views of ads provided by Google Adsense, researchers said. All 10,890 infected sites, found by security firm Sucuri, run the WordPress content management system and have an obfuscated PHP script that has been injected into legitimate files powering the websites. Such files include “index.php,” “wp-signup.php,” “wp-activate.php,” “wp-cron.php,” and many more. Some infected sites also inject obfuscated code into wp-blog-header.php and other files. The additional injected code works as a backdoor that’s designed [...]