Vulnerabilities in Telegram stickers allow hacking into an iPhone without a single action from the owner. Cybersecurity experts spent a year studying the rlottie library, which is responsible for animated stickers, and found several serious errors - through which malicious code was launched on iOS, such an attack is called a zero-click attack. The messenger already changes rlottie to tlottie, but the update happens gradually, so it is recommended to install the latest versions immediately after the release.