What went wrong at Tesco Bank?

Internal systems blamed for monster cyber-attack.

By John Leyden

Tesco Bank has enlisted the help of recently established National Cyber Security Centre (NCSC) following the most serious cyber-attack ever launched against a UK bank.

The attack against the supermarket giant’s banking arm involved the theft of £2.5m from 9,000 customers’ accounts, funds that the bank quickly reimbursed. Initially theft against 20,000 accounts was feared but this figure was revised downwards late on Tuesday night. At the same time Tesco announced that it was restoring normal service following the suspension of online and contactless transactions from current accounts applied in the immediate wake of the breach last weekend.

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Source: http://www.theregister.co.uk/