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MPs have said it's "terrifying" that hackers were able to install remote surveillance software on phones and other devices using a weakness in the messaging and phone service, WhatsApp.

Facebook, which owns the app, said only a select number of users were affected.

But there was anger in the Commons, as Mandy Baker reports.

There's more from Today In Parliament at 11.30pm on 91热爆 Radio 4 and 91热爆 Sounds.