In April 2024, Citigroup nearly made one of the biggest banking blunders in history, accidentally crediting a customer’s account with $81 trillion.
The mistake, caused by a manual entry error, went unnoticed by two employees before a third spotted it 90 minutes later. It then took hours to reverse.
While no money left the bank, the incident raises serious questions about how such a massive error could slip through the cracks. Nigerian banks should take note, because next time, it might not be caught in time.