Ellen MessmerSenior Editor, Network World, Network World

Ellen Messmer is a senior editor at Network World. She covers news and technology trends related to information security.

Royal Pain: British Royal Navy Web Site Hacked

The main British Royal Navy Web site has been hacked.

DIY Tool Makes Your Own Antivirus Signatures

Big bad malware and zero-day attacks that fly under the radar of anti-virus software are hitting enterprises everywhere. With that in mind, HBGary is coming out...

YouTube Among Tech Tools for War Crime Investigators

War crimes -- brutal genocide, mass executions, ethnic cleansing, torture -- have spurred international efforts by the United Nations to investigate and convict...

Most Large Companies Seeing More Hack Attacks, Survey Shows

Is this year turning out to be even worse for getting hacked than last year? That's what a survey of 350 IT and network professionals would indicate.

Cisco Launches High-End Security Appliance

Cisco today announced a multi-function security appliance that combines a firewall with VPN support, plus an intrusion-prevention system (IPS).

Internet cloud

Cloud Computing in the U.S. Shows Momentum

How widespread is business use of cloud computing? The results of one survey published Tuesday suggest use of both public and private clouds has real momentum.

Report on Biometrics Raises Hard Questions

A lengthy review of the general state of biometrics raises questions about the reliability, accuracy and scalability of these technologies.

Biggest Insider Threat? Sys Admin Gone Rogue

What's one of the biggest insider threats to the corporate network? The high-tech folks that put it together, make changes to it, and know what's on it.

U.S. Military Takes Cloud Computing to Afghanistan

The U.S. military is taking cloud computing into rugged terrain in Afghanistan, where the basic hardware and software technology is being packed into mobile boxes.

HP Acquires ArcSight, Hopes to Become Security Leader

$1.5 billion buyout fits with HP's IT management business.

Do the Recent Viruses Have Specific Targets?

Two e-mail-delivered viruses -- "Here You Have" and "David Leadbetter's One Point Lesson" may have a particular mission.

Symantec Updates Enterprise Vault, Ties to Microsoft Cloud Apps

Symantec Tuesday unveiled updated storage and backup gear, giving Enterprise Vault 9.0 new tools for lawyers.