ABN Amro Is Latest Bank to Suffer Breach After Hack at Supplier

ABN Amro Bank NV became the latest European lender to suffer a data breach through one of its suppliers as criminals seek to exploit weaker links adjacent to banking.

The Dutch bank said in a statement Friday unauthorized parties may have obtained access to data of some of its clients after AddComm was the victim of a ransom-ware attack this month.

Banks are a prime target for cyber criminals given the sensitive financial data they hold and the potential for turmoil from disrupting financial services. While European lenders and their regulators focus intently on guarding against such hacks, the defenses ...