WhatsApp spyware call (2019)
A flaw in WhatsApp's voice-call handling let NSO Group's Pegasus spyware install on a phone with a single call, needing no action from the target beyond accepting it. The bug was tracked as CVE-2019-3568.
WhatsApp urged all users to update and disclosed the bug publicly within days.
The case showed messaging apps as prime entry points for spyware and led to lawsuits against NSO Group.
Like the Telegram flaw, a single interaction inside a trusted messaging app was enough to compromise a target's device and data.
