Telegram messenger is a free cloud-based mobile and desktop messaging app with a focus on security and speed. With Telegram, you can send messages, photos, videos and files of any type (doc, zip, mp3, etc.), as well as create Groups for up to 100,000 people or Channels for broadcasting to unlimited audiences. Telegram supports end-to-end encrypted voice calls. you can get more info about Telegram here.
If you’re using Twitter you should change your password. Twitter has advised that more than 330 million users on its platform should change their passwords due to a bug. Twitter identified a bug that stored passwords unmasked (unscrambled, thus in clear/plain text) in an internal log.