Security provider Guardent said Tuesday it received a $20 million third round of funding led by Citigroup's e-Citi Unit. Mercury Interactive, along with previous investors Charles River Ventures, New Enterprise Associates, and Sequoia Capital, also participated in the round. Guardent has raised a total of $50 million and the latest proceeds will be used to expand the company's security and consulting business. The Waltham, Mass.-based company also announced it acquired DefendNet Solutions' customer list and technology, giving it a backup hosting site in Rhode Island.
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