Morgan Stanley is embroiled in a class-action lawsuit over two separate data breaches involving missing equipment that exposed clients’ personal identifiable information — including Social Security and account numbers —  to third parties.

The case, brought by a retirement account client and filed in the U.S. District Court for the Southern District of New York on Thursday, involves an unauthorized disclosure of clients’ identity information to unknown third parties and not a breach of a computer system by a third party, the 33-page complaint states.

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