|Scenario Task Parent=Online Conversations

|Scenario Task Type=Surveillance

|Scenario Task Description=Secure telephony and video conferencing on the Internet did not exist until very recently, when [https://en.wikipedia.org/wiki/ZRTP ZRTP], a cryptographic standard for voice over IP (VOIP) conferencing was invented by Phil Zimmerman, the same person who gave us [https://en.wikipedia.org/wiki/Pretty_Good_Privacy PGP] encryption for email. ZRTP offers end-to-end encryption of the conversations and has been implemented in [https://jitsi.org/ Jitsi] and [http://www.linphone.org Linphone]. Both tools encrypt audio and video conferencing and are available for use on all common platforms.

<br />