EMC Unit Said to Fix Defense Security Systems After Data Breach

EMC Corp.’s RSA unit is bolstering security for clients, including Lockheed Martin Corp., after a network breach in March resulted in the theft of RSA data, a person familiar with the process said.

The remediation involves replacing the SecurID tokens issued by RSA that often expire in three years, said the person, who wasn’t authorized to discuss the matter publicly. The company’s defense-contractor clients, which make missiles, aircraft and other weapons, also include Northrop Grumman Corp. and Raytheon Co. Dave Farmer, a spokesman for EMC declined to comment.