This group of security companies includes several that want to capitalize on technology ideas that were originally devised to serve communities of special interest but could now take on a wider cybersecurity role. Fixmo, for example, has its roots in the National Security Agency where its mobile security makes it possible to run critical applications in sandboxes that are insulated from the rest of the machine, making them less likely to fall victim to malware that might have infected the device.

The National Security Agency is building one of the largest and most expensive data centers as a place to gather and analyze intelligence data.

Microsoft today denied that it has built a backdoor into Windows 7, a concern that surfaced yesterday after a senior National Security Agency (NSA) official testified before Congress that the agency had worked on the operating system.

The National Security Agency (NSA) worked with Microsoft on the development of Windows 7, an agency official acknowledged yesterday during testimony before Congress.

US President Barack Obama is due to receive a high-security BlackBerry 8830 soon, a Washington-based newspaper has reported.

They sometimes call national security the third rail of politics. Touch it and, politically, you're dead.