Hardly a week goes by when I don’t hear from some malware researcher or reader who’s discovered what appears to be a new sample of malicious software or nasty link that invokes this author’s name or the name of this blog. I’ve compiled this post to document a few of these examples, some of which are quite funny.
Previous stories in my Pharma Wars series have identified top kingpins behind the world’s largest spam botnets. Today’s post includes never-before-published information on “Google,” the secretive hacker in charge of the infamous Cutwail botnet.
Last week, not long after I published the latest installment in my Pharma Wars series, KrebsOnSecurity.com was the target of a sustained distributed denial-of-service (DDoS) attack that caused the site to be unavailable for some readers between Nov. 17 and 18. What follows are some details about that attack, and how it compares to previous intimidation attempts.
The DDoS was caused by incessant, garbage requests from more than 20,000+ PCs around the globe infected with malware that allows criminals to control them remotely for nefarious purposes. If you’ve noticed that a few of the features on this site haven’t worked as usual these past few days, now you know why. Thanks for your patience.
First, the good news: The past year has witnessed the decimation of spam volume, the arrests of several key hackers, and the high-profile takedowns of some of the Web’s most notorious botnets. The bad news? The crooks behind these huge… Read More »
Spam trackers are seeing a fairly dramatic drop in junk e-mail sent over the past few days, specifically spam relayed by the one of the world’s largest spam botnets – although security experts disagree on exactly which botnet may be throttling back or experiencing problems.
Security researchers have dealt a mighty blow to a spam botnet known as Pushdo, a massive grouping of hacked PCs that until recently was responsible for sending more than 10 percent of all e-mail worldwide.