Another WhatsApp security flaw was discovered by developers. Hackers could set up surveillance of any user using an ordinary call to a smartphone running Android or iOS via a messenger. At the same time, the victim might not even answer the call. At the time of the call, a special NSO Pegasus spy app is downloaded, which monitors by collecting data about the user’s location, incoming messages, photos and videos, recordings from the camera and microphone. A call from hackers is hidden in the WhatsApp message history, which complicates the process of detecting a hack. According to available information, such a vulnerability was exploited by the NSO Group from Israel, which offers special software to the Middle East special services. The company allegedly tried to track a lawyer from England working in the case against this Israeli bureau. However, the NSO Group does not agree with the allegations and, as confirmation of their words, they assist investigators in investigating the crime. According to WhatsApp developers, the vulnerability has now been fixed by updating the WhatsApp 2.19.51 messenger on May 13. The new version is relevant for smartphones on Android and iOS.