WhatsApp warned users after hundreds downloaded a fake messaging app containing spyware. The malicious application targeted users and was distributed outside official app stores. WhatsApp notified affected users, logged them out, and advised uninstalling the fake application immediately. The company said the spyware attempted to access sensitive information and device data. WhatsApp emphasized downloading only official versions from trusted platforms. The incident highlights security risks from unofficial apps and WhatsApp’s efforts to protect users from spyware threats and unauthorized surveillance attempts.