The former deputy PM has started his new job at Facebook.
“Given the elections, we took action as soon as we’d completed our initial investigation," social network said.
Information Commissioner says social network "should have known better".
Pressure group urges ministers to tighten up laws.
It's thought to have cost more than £250,000, but nobody knows who's behind it.
Clegg described the move as 'an exciting new adventure'.
Facebook has established a ‘War Room’ to tackle fake news in the run-up to the US midterm elections. This is the company’s attempt to avoid the foreign interference experienced on social media platforms during the 2016 US presidential election.
Here's how to use social network's new tool to check up on the issues you care about.
The hackers accessed names, email addresses or phone numbers
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