March 1, 2025 
Citigroup intended to transfer $280 to a client but somehow ended up crediting them $81 trillion.
It took three employees a full 90 minutes to spot the blunder and undo it.
No cash actually left the bank, but seriously—$81 trillion?
Turns out, the glitch stemmed from a system preloaded with 15 zeros, requiring manual input.
Citi’s no stranger to slip-ups—slapped with a $136M fine in 2024 and $400M in 2020 for shaky risk management.
Maybe it’s time someone double-checks their math.
Source: Insider Paper
