Dennis Fisher

A new version of the MyDoom worm appears to be circulating on the Internet and may be responsible for some disruptions to Microsoft Corp.s Web site Sunday night and Monday morning, researchers said. When its executed, the new variant, called MyDoom.C, or Doomjuice, begins scanning for machines listening on TCP port 3127. When it finds […]

In another sign that the security market—and technology sector in general—is on the rebound, Juniper Networks Inc. on Monday agreed to acquire security appliance maker NetScreen Technologies Inc. for $4 billion in stock. The purchase price is a premium of more than 50 percent for NetScreens shareholders. The companys stock was trading at $26.40 at […]

Check Point Software Technologies Ltd. on Wednesday released a fix for a set of severe security vulnerabilities in its FireWall-1 product that enable attackers to execute commands on the vulnerable server. The problems are a group of format string flaws that appears when FireWall-1 attempts to validate HTTP requests, according to analysts at Internet Security […]

Microsoft Corp.s main Web site on Tuesday showed no ill effects from the scheduled denial-of-service attack generated by computers infected by the MyDoom.B virus. Machines infected by the less-common of the two MyDoom viruses are programmed to begin flooding Microsofts site with HTTP GET requests today, and to continue doing so through March 1. However, […]

After years of success deploying more effective and smarter defenses, anti-virus researchers contacted last week in the wake of the MyDoom outbreak acknowledged for one of the first times that the battle may be getting away from them. The MyDoom virus, which hit Jan. 26 and infected several-hundred-thousand machines, is the fastest-spreading virus in the […]

Microsoft Corp. on Monday finally released a patch for a dangerous vulnerability that lets attackers trick Internet users into visiting malicious sites. The flaw has been public knowledge for some time, but Microsoft failed to include a fix for it with Januarys scheduled patch releases. The vulnerability has to do with the way IE parses […]

SEATTLE—The dominance of Windows in the marketplace continues to represent a threat to the safety and security of the Internet and is a problem that must be addressed at the highest levels of government, a noted security researcher said in his keynote speech at the Black Hat Windows conference here Thursday. Dan Geer, one of […]

NetForensics Inc. is putting the finishing touches on a new security strategy and product that company executives said will help clear up some of the confusion about security information management. NetForensics was a pioneer of the SIM industry and was among the first vendors to articulate the idea of pulling together data from devices across […]

While the outbreak last week of the Bagle.A virus was one of the least troublesome in recent memory, security experts worry that the virus—following in the infamous footsteps of 2003s SoBig worms—is a harbinger of more-sophisticated attacks to come. Many in the security community say the SoBig family—and possibly Bagle.A—are the work of an organized […]

A fast-moving Windows worm known as MyDoom on Monday began spreading at a furious rate on the Internet. MyDoom arrives via e-mail and has a randomized senders address and subject line. The body of the message varies, but purports to be an error message, such as: “The message cannot be represented in 7-bit ASCII and […]