Open Whisper Systems

Updated: 11/13/2018 by Computer Hope
Open Whisper Systems logo

Open Whisper Systems is a non-profit software organization headquartered in San Francisco, CA, founded in 2013 by Moxie Marlinspike. It develops the end-to-end encryption protocol Signal, and a secure messaging app of the same name.

The organization grew out of Whisper Systems, a company co-founded in 2010 by Marlinspike and Stuart Anderson, which was acquired by Twitter in 2011. Marlinspike left Twitter in 2012 and founded Open Whisper Systems to pursue open source development of future protocols, with a focus on community collaboration.

In 2018, $50 million was invested by Brian Acton to create the Signal Foundation, a non-profit organization supporting the development of Signal.

Corporate Information

Primary product: Signal
Associated nonprofit: Signal Foundation
On LinkedIn: signal-technology-foundation
On Twitter: @whispersystems

In the news

Jan 11, 2018 - Signal and Microsoft partner to bring end-to-end encryption to Skype.

Feb. 22, 2018 - Signal Foundation announced. (Hacker News)

May 11, 2018 - Remote zero-click JavaScript code execution on Signal desktop. (@ortegaalfredo)

May 16, 2018 - Signal desktop flaw exposes chats in plaintext. (The Hacker News)

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