“The number of weak passwords is not surprising, as this campaign is clearly a target of opportunity and not focused on a specific target,” Bing says. “This is interesting as it marks a sea change in the tactics of attackers. In addition to drive-by exploits of unpatched Windows machines being the low-hanging fruit, attackers are learning that these blog and content management systems are often vulnerable to trivial attacks.”

via ‘Fort Disco’ Botnet Behind Attack Campaign Against Thousands Of Sites.