Paul Roberts

Antivirus software companies are warning customers that new editions of the Bagle family of e-mail worms are spreading on the Internet, and depositing copies of the worm's source code on computers they infect.

Microsoft Corp. is pushing out changes that will alter the configuration of its Windows 2000, XP and Windows Server 2003 operating systems to help customers fight off attacks, detected last week, that use Web pages running Internet Information Server (IIS) as launching pads for malicious computer code.

Cisco Systems Inc. said that products are now available for its months-old Network Admission Control, or NAC, program to integrate IT security features and policies into network switching and routing products.

Antivirus company Kaspersky Labs Ltd. said on Monday that it discovered the first-ever computer virus capable of spreading over mobile phone networks.

One day after an apparent attack on its systems slowed access to leading Web sites such as yahoo.com, google.com and microsoft.com, distributed computing company Akamai Technologies Inc. said that it was the victim of a sophisticated, large-scale attack aimed at specific customer Web sites.

Four new holes have been discovered in the Internet Explorer (IE) Web browser that could allow malicious hackers to run attack code on Windows systems, even if those systems have installed the latest software patches from the Redmond, Wash. company, security experts warn.

Network Associates Inc. on Monday announced new versions of its two intrusion prevention (IPS) products, IntruShield and Entercept, that it says will make it easier to protect corporate networks from so-called "zero day" attacks, attempts to break in to networks using previously unknown vulnerabilities.

A close investigation of a common open source tool has uncovered more critical security holes in software used by developers to track and manage changes in computer code.