Windows Explorer, one of the most crucial components of Microsoft's operating system, was quarantined earlier this week after being falsely identified as malicious code by an antivirus company.Users of Kaspersky Lab's antivirus products noticed the issue, which Kaspersky claimed lasted two hours, on Wednesday night.

McAfee, Inc. announced the general availability of McAfee GroupShield(R) 7 for Lotus Domino and McAfee GroupShield 7 for Microsoft Exchange. The new versions include a number of enhancements designed to provide greater threat protection, while making management easier than ever before.

Doctor Web, Ltd.announces release of a new product – Dr.Web anti-virus for Windows Mobile.This is the pioneer in the Dr.Web Mobile Security Suite line. Dr.Web anti-virus for Windows Mobile protects Pocket PCs and communicators running under Windows Mobile 2003/5.0/6.0. The new product description is available online here .

InformationWeek reports a new release from Symantec -- a full-version update to its Norton AntiVirus suite for Mac OS X (also called Leopard). This edition includes a "Vulnerability Protection" feature which is designed to protect against infections from applications connected to the Internet. Symantec explained the importance of such a feature due to these attacks which occur at the Web application layer and which constitute 78% of exploit attempts.

As 2007 comes to a close, it’s a good time to reflect on the current threat landscape. The past 12 months comprised a record-breaking year. McAfee® recorded well over 100,000 new viruses and Trojans, a 50 percent jump in the total number of threats ever cataloged.

The Nuwar virus (a.k.a. Storm Worm) grew into the largest peer-to-peer (P2P) botnet to date, while TJ Max revealed the largest data breach in history. Other areas saw significant growth as well, from phishing attacks to crimeware, from vulnerabilities disclosed to zero-day exploits; 2007 was a big year for threats.