Facebook faces $1.6bn fine and formal investigation over massive data breach

Irish data regulator could penalize the social network after hack of nearly 50m accounts

The Irish Data Protection Commission has opened a formal investigation into a data breach that affected nearly 50m Facebook accounts, which could result in a fine of up to $1.63bn.

The breach, which was discovered by Facebook engineers on Tuesday 24 September, gave hackers the ability to take over users’ accounts. It was patched on Thursday, the company said.

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