1. Pavel Durov, the co-founder of the popular messaging app Telegram, is a Russian billionaire who has been living in self-imposed exile since 2014. Durov, who is known for his commitment to privacy and encryption, has clashed with the Russian government over their demands to access user data and censor content on Telegram. Despite these conflicts, Durov has remained steadfast in his principles, even going so far as to refuse to comply with the Russian authorities' requests.

2. Telegram, the messaging app founded by Durov, has become a popular choice for users seeking secure and private communication. The app's emphasis on encryption and privacy has made it a favorite among activists, journalists, and others who value their digital privacy. However, this has also made Telegram a target for governments and law enforcement agencies who seek to monitor and control online communication.

3. Durov's personal life and background are also highlighted in the article. He is described as a reclusive and enigmatic figure who has largely avoided the public eye. Despite his wealth and success, Durov has chosen to live a relatively simple life, focusing his efforts on the development and promotion of Telegram. The article also touches on Durov's early career and the circumstances that led him to create Telegram, which has become a global phenomenon with over 200 million active users.