The Bank of NY Mellon is one of the largest banks in the world. The financial institution specializes in custodian banking and offers securities services. This company has branches in over 35 countries, generates $16 billion in annual revenue, and manages more than $1.9 trillion in assets. It's a huge company that manages loads of data for its customers, and it recently suffered from a data breach.
The Bank of NY Mellon breach occurred because attackers broke into the bank's file systems and began stealing data. We don't know if the attack was possible because of a security issue or a phishing attack, but it resulted in the loss of harmful data for many bank customers.
The Bank of NY Mellon released a notice of breach with the Massachusetts Attorney General's office on May 13, 2023. The breach likely occurred one month or more before the notice was filed.
This BNYM data breach impacts customers and employees of the many bank locations. Anyone impacted by this breach will receive a personal notice from the bank informing you that your information was involved in this attack.
There is no official file count for the Bank of NY Mellon data breach yet. We only know that many customers were impacted by the breach overall.