KeyBank suffers cyberattack, customer sensitive info stolen

Hackers stole sensitive data including Social Security numbers, addresses and account numbers of home mortgage holders at KeyBank, the bank reports, in the breach of a third-party vendor that serves multiple corporate clients.

The cybercriminals obtained the information on July 5 after breaking into computers at the insurance services provider Overby-Seawell Company, according to a letter that Cleveland-based KeyBank sent to affected residential mortgage customers.

KeyBank, which operates in 15 states and has close to $200 billion in assets, would not say how many of its customers were affected or answer any other questions about the breach. In a statement, it said it was notified of the data theft on Aug. 4 and KeyBank systems and operations were unaffected.

Overby-Seawell did not respond to phone messages and emails sent to executives seeking comment. In the statement sent Friday to The Associated Press, KeyBank said Kennesaw, Georgia-based Overby-Seawell “suffered a cybersecurity incident that compromised data of its corporate clients.” It did not elaborate.

According to its website, Overby-Seawell’s customers include banks, credit unions, mortgage servicers, finance companies and property investors. Its products include a tracking system for real-time insurance monitoring that can be integrated with other financial industry software platforms.

In an Aug. 26 letter shared with the AP by an affected mortgage-holder, KeyBank said the information acquired in the Overby-Seawell breach related to their mortgage includes their name, address, mortgage account number and the first eight digits of their nine-digit Social Security number.

Last month, South Korean chaebol Samsung reported it experienced a data security incident that resulted in the unauthorized access of some customer information.