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Credit Suisse's U.S. brokerage files lawsuit over data leak

April 9 (Reuters) - The U.S. brokerage subsidiary of Credit Suisse Group AG has disclosed that former employees’ personal data was leaked last month and that it had filed a lawsuit over the matter, in the latest snafu for the Swiss banking giant.

Credit Suisse Securities has sued 10 individuals for sending private information about former employees to media outlets, law enforcement and former employees via a March 20, 2021 email, according to a legal filing on Thursday.

The data was sent from a fake Gmail account in the name of Thomas Gottstein, the chief executive officer of the Swiss bank, the lawsuit said. It included the former employees’ addresses, social security numbers and bank account details, among others. It did not disclose how many former employees were affected by the leaked data.

The lawsuit, which was filed in a federal court in San Francisco, also accused the unnamed individuals of threatening to disclose other confidential data.

The brokerage said its investigation to date has determined that the defendants may be one or more former employees “but there is not yet sufficient information to conclusively link the Email to any specific individual or group of individuals.”

It is seeking unspecified damages and to bar the individuals from obtaining or disseminating any more information from Credit Suisse’s system, according to the filing.

Credit Suisse Group announced earlier this week that it would take a $4.76 billion hit from its dealings with Archegos Capital Management, prompting it to overhaul the leadership of its investment bank and risk divisions.

Archegos went into meltdown this month after its leveraged bets on certain media company stocks soured, causing billions of dollars of losses for the family office and the banks that financed its trades.

The Swiss bank is also reeling from the collapse of its client Greensill Capital. (Reporting by Jody Godoy in New York and Noor Zainab Hussain and Niket Nishant in Bengaluru; Editing by Michelle Price and Paul Simao)

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