MphasiS, a unit of Hewlett-Packard Co (NYSE: HPQ ), announced its plans to acquire Digital Risk LLC for $175 million. The deal is likely to close by January 31, 2013. Hewlett-Packard shares gained 0.78% to close at $12.99 on Friday. (c) 2012 Benzinga.com. Benzinga does not provide investment advice. All rights reserved.