Under the terms of the partnership, Ernst & Young's Security & Technology Solutions practice will use CA's eTrust line of security products.
Mark Doll, Americas director for Security and Technology Solutions at Ernst & Young said the relationship was part of a long-term partnership between the two companies to provide "one-stop shopping for our clients".
Kurt Seibert, senior vice-president at CA said the two companies will also work together on product development. "Ernst and Young [has] very good relationships in audit departments and security departments," Seibert said. "They can influence the selection of our products," he added.