The outgoing transfer request-$760k from Duanesburg Central School District's account-looked suspicious. Officials at New York-based NBT Bank put in a call to district executives who quickly identified the transaction as rogue. Further investigation found that more than $3 million had been siphoned out of the school's account in the preceding days. The bank was able to recover $2.5 million, leaving the district on the hook for about half a million in lost funds.

The district's reaction? Call the FBI, close those accounts, restrict online access, and "request that all payments be sent and received via paper check until further notice," Superintendent Christine Crowley wrote in a letter to constituents.

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