WhatsApp growth slumps as rivals Signal, Telegram rise
Skype taps Whisper's Signal protocol to test encrypted calls and chats - TechCentral.ie
Skype partnering w/ Signal for new 'Private Conversations' encrypted messaging feature - 9to5Mac
Microsoft finally adds end to end encryption to Skype
Forensic guide to iMessage, WhatsApp, Telegram, Signal and Skype data acquisition - Digital Forensics (4N6)
Skype taps Whisper's Signal protocol to test encrypted calls and chats | PCWorld
Russian Hackers Build Fake Skype, Signal, Pornhub Apps to Lure Victims - Defense One
Trends Report: What's up with Skype during COVID-19? (April 2020) - YouGov Signal
Skype Introduces End-to-End Encrypted Texts and Voice | WIRED
Is Skype Safe and Secure? What are the Alternatives?
Skype introduces Private Conversations with end-to-end encryption | TechSpot
Skype - Powered by the Signal Protocol - YouTube
Software Framework Flaw Affects Apps From Skype, Signal, Slack, Twitch, Others
Signal (software) - Wikipedia
Skype for Business plays a dial tone during a Teams call - Skype for Business | Microsoft Learn
