At least 760 companies' networks were compromised by the same breach that affected security firm RSA, elevating concern over data security.
Bedford, Mass.-based RSA, the security division of EMC, provides security, risk and compliance solutions to major corporations and disclosed a data breach in March.
Security analyst Brian Krebs' blog identifies hundreds of business and organizations, including 20 percent of Fortune 500 companies, believed to be affected by the RSA security breach.
Krebs' list includes Abbott Labs, Cisco Systems, eBay, the European Space Agency, Facebook, Google, IBM, Intel, the IRS, Motorola, Research in Motion and Wells Fargo.
His list reveals the RSA attack was greater than previously understood, underscoring the challenges of detecting a breach and identifying the parties behind it, especially when the intrusion goes unnoticed until activated.
Shortly after hackers compromised RSA's network, it became clear the security firm wasn't the only corporation victimized in the attack, as dozens of other multinational companies were infiltrated using many of the same tools.
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