Virgin Media has apologised after a database containing personal details of 900,000 customers was accessed without permission due to being "incorrectly configured".
About 2.4 million former and existing mobile phone users who took out contracts or bought handsets via Carphone Warehouse and its subsidiary brands are being encouraged to alert their bank about a potential data breach as soon as possible.
Firms plaguing people with nuisance calls and texts face a clampdown by the Government as new laws taking effect from 6 April mean they can be hit with fines of up to £500,000.
Nearly 100,000 customers with Staysure travel insurance policies should check their card and bank statements now for fraudulent transactions, after a cyber-attack saw card details stolen from the firm.
6 January 2014
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