M&A roundup

Perot Systems Corp. of Plano, Texas, has bought safety, environmental and engineering services company PrSM Corp. for $7.2 million.The acquisition will let Perot Systems Government Services provide a wider range of safety and engineering services to the Energy Department, which is Knoxville, Tenn.-based PrSM's largest client, and expand its offerings in others such as the Defense Department and NASA.The transaction is subject to approval by PrSM's shareholders.IBM Corp. has agreed to acquire PureEdge Solutions Inc. The newly acquired company offers business process automation frameworks to create, manage and deploy Extensible Markup Language forms-based processes.PureEdge worked with IBM on its WebSphere Portal, which integrates with PureEdge XML-based e-forms and lets users work on e-forms online and offline.Government customers for Victoria, British Columbia-based PureEdge include the U.S. Air Force and Army and the National Institutes of Health, according to the company's Web site.VeriSign Inc. has acquired security intelligence provider iDefense of Reston, Va., for about $40 million in cash.IDefense, which has a multilingual network of more than 200 research contributors in more than 30 countries, publishes intelligence on network security threats and vulnerabilities for financial services firms, government agencies, retailers and other enterprises. Customers use the reports to modify their security infrastructure and respond to threats on a real-time basis.VeriSign, Mountain View, Calif., provides intelligent infrastructure services for the Internet and telecommunications networks.HyperSpace Communications Inc. completed the acquisition of PC maker MPC Computers LLC in an all stock deal. The deal was announced in March when HyperSpace of Denver agreed to issue 4.3 million shares to acquire MPC from Gores Technology Group of Los Angeles.HyperSpace also agreed to issue warrants for the purchase of 5 million shares with an exercise price of $3 and 1.5 million shares with an exercise price of $5.50.MPC, which ranks No. 39 on Top 100, will operate as a wholly owned subsidiary.