European, U.S. regulators tell banks to prepare for Russian cyberattack threat

Banks were conducting cyber war games to test their ability to fend off an attack.

The European Central Bank is preparing banks for a possible Russian-sponsored cyberattack as tensions with Ukraine mount, two people with knowledge of the matter said, as the region braces for the financial fallout of any conflict.

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The stand-off between Russia and Ukraine has rattled Europe's political and business leaders, who fear an invasion that would inflict damage on the entire region.