|Scenario Task Description=Secure telephony and video conferencing on the Internet did not exist until very recently. Phil Zimmerman (the same person who gave us , when [https://en.wikipedia.org/wiki/Pretty_Good_Privacy PGPZRTP ZRTP]) developed , a cryptographic standard for voice over IP (VOIP) conferencing called was invented by Phil Zimmerman, the same person who gave us [https://en.wikipedia.org/wiki/ZRTP ZRTPPretty_Good_Privacy PGP]encryption for email. It 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 support the ZRTP standard in encrypt audio and video conferencing and are available for use on all common platforms.

In addition Jitsi also offers a conferencing service accessible directly from the browser, called [https://jitsi.org/Projects/JitsiMeet Jitsi Meet]. You can [https://github.com/jitsi/jitsi-meet install the open source] package on your own computer or use their publicly available portal at https://meet.jit.si. Note that this web service provides only transport layer security (TLS )and not the ZRTP standard end-to-end encryption as per the clients mentioned above. The , which means that the connection is encrypted but the content is accessible to the provider of the bridge.