Hewlett-Packard announced Monday that it has agreed to purchase security vendor ArcSight for US$1.5 billion. The deal is expected to close by the end of the year.

HP said the acquisition would allow it to offer customers a more comprehensive view of all events across IT operations, security and compliance and the ability to detect threats and risks by correlating both activity and state changes in real time.

The Arcsight technology also promised a constant feedback loop between “build, manage and monitor to ensure that enterprises remain secure”.
HP executive vice president, Software and Solutions Bill Veghte said, “From a security perspective, the perimeter of today’s enterprise is porous, putting enormous pressure on clients’ risk and compliance systems. The combination of HP and ArcSight will provide clients with the ability to fortify their applications, proactively monitor events and respond to threats.”

“By combining ArcSight’s Enterprise Threat and Risk Management Platform with HP’s breadth of application development and operations management solutions, HP will be able to offer an integrated security platform that delivers broader visibility, deeper context and faster remediation of enterprise-wide security and risk-related events,” said Tom Reilly, president and chief executive officer, ArcSight.

The cash offer is subject to regulatory approval and  will be HP's second big acquisition in recent weeks. On 2 September it ended a bidding war with Dell, agreeing to pay $2.35 billion for virtualised storage vendor 3Par.

Now read Cyberthreat, Arcsight's ComputerworldUK security blog.