In a smart move disguised as a privacy service, Facebook once transformed a trusted VPN into a powerful surveillance engine.

Armed with usage data, Facebook offered to buy Snapchat for $3 billion. When Snap CEO Evan Spiegel refused, Facebook didn’t back down. It launched Instagram Stories, a direct clone of Snapchat’s ...

One early popular VPN, Hola, was accused of commandeering users’ internet addresses to trigger cyber attacks, while another, ...