Telegram retains data necessary for its operations, including metadata like IP addresses. In 2024, the company updated its privacy policy to clarify that it can disclose IP addresses and phone numbers of rule violators to law enforcement upon valid legal requests. This resulted in Telegram fulfilling 900 information requests from U.S. authorities in 2024, affecting 2,253 individuals. Telegram has experienced data breaches, including a 2020 incident where 42 million Iranian users had their data compromised and a 2019 vulnerability exploited by Chinese agencies affecting protestor identities in Hong Kong. The platform allows users to create public channels for sharing content, but these channels are not end-to-end encrypted. Telegram offers secret chats that are end-to-end encrypted, but they are limited to the device of origin. The app allows for automatic message deletion, with a minimum interval of one day, and features a self-destruct option for accounts after a period of inactivity. Telegram's client applications are open-source, while its server-side code is closed-source. The company operates on a freemium model, offering a paid tier for enhanced features. Telegram is available for free download on the Apple App Store and Google Play Store.