EMC Corp. (NYSE: EMC) has agreed to acquire Tablus Inc., a San Mateo, Calif.-based provider of data loss prevention solutions. No financial terms were disclosed for the deal, which is being done via the RSA security division of EMC. Tablus has raised $23 million in VC funding since 2003, from Menlo Ventures and Trident Capital. www.emc.com www.tablus.com