Under the terms of agreements signed between the companies, Symantec will acquire PGP Corporation for approximately $300m (£195m) and GuardianEdge for around $70m.
The agreements are subject to customary closing conditions, including regulatory approvals, and are expected to close during the June quarter.
Symantec expects the transactions to be $0.02 dilutive to non-GAAP earnings per share in its 2011 fiscal year and accretive to its non-GAAP earnings per share in its 2012 fiscal year.
Both PGP Corporation and GuardianEdge will join the Enterprise Security Group of Symantec, led by senior vice-president Francis deSouza.
Massive new Coventry campus targets 60GWh battery output
Where will all the raw materials come from for the manufacturing process? How will they be transported to the factory and what is going to be done with the various scrap and residues?