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Microsoft finally adds end to end encryption to Skype
WhatsApp growth slumps as rivals Signal, Telegram rise
20 Clean White Social Media Icons on Black Background such as skype. mesenger. xing. signal and twitter icons. Versatile and high-quality Stock Vector Image & Art - Alamy
Trends Report: What's up with Skype during COVID-19? (April 2020) - YouGov Signal
Skype Introduces End-to-End Encrypted Texts and Voice | WIRED
Encrypted Chats Are Now Available In Skype | ComTech Computer Services, Inc.