How secure is screen sharing?

[Christy Bainter]

Is the data I am viewing on shared screen stored somewhere else or accessible to ANYONE other than those users we have specifically shared our screens with?

[Rodney Sawyer]

According to the docs: https://confluence.atlassian.com/hc/video-chat-and-screen-sharing-610435345.html

How is information encrypted? 

• All signaling communications are encrypted using cipher suites restricted to AES 128 or 256 bit encryption. 
• Video and audio data streams are protected using the Secure Real-time Transport Protocol (SRTP). 

• AES CPC 128 bit encryption is used for RTP packet encryption. 
• HMAC SHA1 is used for packet authentication and verification.
• Encryption keys are generated by the streaming server by session.

• Media is encrypted between the client and the server (hipchat.me).