Dell’s RSA security solutions businesses, including the RSA Conference, were bought by a consortium of companies for about $2 billion, according to Tuesday announcements.  The RSA purchase was led by Symphony Technology Group (STG), the Ontario Teachers’ Pension Plan Board and AlpInvest Partners, according to an STG announcement, which described the deal as a “definitive agreement.” In an all-cash deal, the consortium will be acquiring “RSA Archer, RSA NetWitness Platform, RSA SecurID, RSA Fraud and Risk Intelligence and RSA Conference” after regulatory approvals.