What's more devastating than a DDoS attack launched by a botnet? In some cases, that's the DDoS attack launched by the "opt-in botnet" aggregated through a crowdsourcing campaign.

New report indicates that the combination of the ZeuS crimeware kit, and the tremendous increase of malicious PDFs seen in 2009, play a crucial role in the growth model of the cybercrime ecosystem.

According to Intego's security memo, OSX/HellRTS.D is being distributed on a number of forums shows that it will be accessible to a large number of malicious users who may attempt to use it to attack Macs.

The attacks occurred mostly on WordPress blogs hosted by Network Solutions but it appears that there are multiple security weaknesses in play.

A currently ongoing ransomware campaign is using a novel approach to extort money from end users whose PCs have been locked down - it attempts to extorts $400 from users which would otherwise face a copyright violation suit.

The patches will be released alongside a new automatic updater software that the company hopes will speed up the downloading and deployment of its security fixes.

There is more that can be done with this latest PDF hack that may not be immediately apparent. We could start seeing persistent PDF worm attacks.

Security response teams at Adobe and FoxIt are investigating ways to mitigate a new PDF hack that allows the execution of an embedded executable without exploiting any security vulnerabilities.

The attacks, first spotted on March 9, included Trojan downloaders and backdoor programs that gave malicious hackers full access to hijacked PCs.

The out-of-band update comes exactly 21 days after Microsoft said it was aware of targeted attacks against Windows users running its flagship browser.