What happened
Researchers revealed that WhatsApp can be abused for device fingerprinting, allowing attackers to uniquely identify and track users across sessions. The technique leverages device metadata and behavioral characteristics rather than message content. While Meta has not confirmed active exploitation, the findings raise concerns around surveillance, tracking, and user privacy, particularly for journalists, activists, and high-risk individuals.
Who is affected
WhatsApp users, especially those operating in sensitive or high-risk environments, may be subject to tracking and surveillance.
Why CISOs should care
Metadata-based tracking undermines privacy controls and can support targeted surveillance or intelligence-gathering campaigns.
3 practical actions
1. Limit sensitive communications: Avoid using consumer messaging apps for confidential discussions.
2. Monitor platform updates: Track vendor responses and privacy mitigations.
3. Educate users: Raise awareness about metadata exposure and device fingerprinting risks.