Sometimes being popular gives you the power to do what's right.
WhatsApp, the widely used messaging app, is about to find out how much leverage one billion users gets you.
The Mountain View-based company is facing scrutiny after it was revealed that the accused Westminster Bridge attacker used the service to send a message shortly before killing four people and injuring scores of others in London on March 22.
SEE ALSO: Donald Trump Jr. tweeted about the London attack — an
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