Marsh McLennan reveals April data breach involving third-party software

Gavin Souter reports:

Marsh & McLennan Cos. Inc. was hit by a data breach in April involving access to Social Security numbers and other personal information of staff, former staff, clients and a range of other people linked to the brokerage.

The company sent a breach notification dated June 30, which was obtained by Business Insurance, stating that it discovered the breach on April 26 and that an “unauthorized actor had leveraged a vulnerability in a third party’s software since at least April 22.”

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