PALO ALTO ? In February, Hewlett-Packard released its latest antivirus software, meant to block attacks once they?ve been launched on a network.

The new HP Virus Throttle software is designed to speed the rate at which companies can find and address threats posed to their IT systems. HP said the tools search for abnormal, virus-like behavior and limit the number of connections an infected device can make with other machines. The company said the tool’s reaction time is typically measured in milliseconds and that it reacts without waiting for human attention.

Virus Throttle also alerts system administrators to the presence of malicious software from infected systems.

The as yet unpriced software will be marketed in a package aimed at users of HP’s ProLiant servers and ProCurve Networking 5300 switches.

The applications will also be sold in a package known as the HP Security Containment suite, which is designed to help applications already compromised by a virus affecting access to other applications and files.