The information -- which the letter says wasn’t marked confidential -- included social security numbers, names and addresses of Wells Fargo brokerage clients. There was no confidentiality agreement or protective order covering the information, Zeisler said.

Turiano said in the court filing that the encrypted CD on which the information was sent was stamped “Confidential.”

Wells Fargo determined the mistakenly disclosed data was from accounts from one brokerage branch in the Northeast, a person briefed on the matter said Saturday.

Shea Leordeanu, a Wells Fargo spokeswoman, said the bank’s systems remain secure.

“Our goals are to ensure the data is not disseminated, that it is rapidly returned, and that we ensure the discovery process going forward in the cases is working as it should," Leordeanu said in an emailed statement.

The case is Mill Lane Management LLC v. Wells Fargo Advisors LLC, 652025/2017, Supreme Court, State of New York (Manhattan).

This article was provided by Bloomberg News.

First « 1 2 » Next