Cybercriminals are in the process of rebuilding the Gameover Zeus (GOZ) botnet, which law enforcement authorities took over in June, and recent research suggests that they've had some success, especially in the U.S.
A new malware program called Poweliks attempts to evade detection and analysis by running entirely from the system registry without creating files on disk, security researchers warn.
A new program that encrypts files to extort money from users highlights that attackers don't need advanced programming skills to create dangerous and effective ransomware threats, especially when strong encryption technology is freely available.
Most USB devices have a fundamental security weakness that can be exploited to infect computers with malware in a way that cannot easily be prevented or detected, security researchers found.
It's generally accepted that antivirus programs provide a necessary protection layer, but organizations should audit such products before deploying them on their systems because many of them contain serious vulnerabilities, a researcher warned.
Implementation issues with AVG Secure Search, a browser toolbar from antivirus vendor AVG Technologies that's supposed to protect users from malicious websites, could have allowed remote attackers to execute malicious code on computers.
Attackers injected malicious code into Dailymotion.com, a popular video sharing website, and redirected visitors to Web-based exploits that installed malware.
There is yet another reason to be wary of spam email about bank transfers or invoices -- it could be carrying a new, cleverly designed malware program that steals financial information.
Following a downward trend during the past two years, the number of new rootkit samples rose in the first quarter of this year to a level not seen since 2011, according to statistics from security vendor McAfee.
A malware threat previously used in attacks against energy sector companies is now being aimed at organizations that use or develop industrial applications and machines.
A vulnerability allows attackers to disable Microsoft's antimalware products by sending specifically crafted files to users via websites, email or instant messaging applications.
Mining personal data to deliver targeted ads is the lifeblood of Google's business -- and of many other online firms. But what if that data dries up at the source?
Users can test by simply visiting a Web page if their computers have been infected with Gameover Zeus, a sophisticated online banking Trojan that law enforcement officers temporarily disrupted last week.
Customers of storage and networking equipment manufacturer Buffalo who downloaded certain files from the company's website in Japan last week might have had their computers infected with an online banking Trojan.
The recent effort to disrupt the Gameover Zeus botnet includes plans for Internet service providers to notify victims, but some security researchers think ISPs should play an even bigger role in the future by actively quarantining infected computers ...
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