Silent Circle

Silent Circle is a leader in enterprise privacy, delivered through a revolutionary mobile platform of devices, software and services, starting with ZRTP to build a fundamentally different mobile architecture. Now led by Bill Conner, the former Entrust President and CEO and Nortel President, Silent Circle was co-founded by Mike Janke, former Navy SEAL and security expert; Phil Zimmermann, co-founder of PGP, developer of the ZRTP protocol and 2015 inductee into the Internet Hall of Fame; and Jon Callas, creator of Apple's whole disk encryption software and co-founder of PGP Corporation. Silent Circle is headquartered in Switzerland, home to the worlds best privacy laws.
Company Growth (employees)
Le Grand Saconnex, CH
Size (employees)
65 (est)+2%
Silent Circle was founded in 2012 and is headquartered in Le Grand-Saconnex, CH

Key People/Management at Silent Circle

Michael Janke

Michael Janke

Co - Founder & CEO
Philip Zimmermann

Philip Zimmermann

Co - Founder & President

Silent Circle Office Locations

Silent Circle has offices in Le Grand-Saconnex and Fort Washington
Le Grand-Saconnex, CH (HQ)
12 Route François-Peyrot
Fort Washington, US
120 Waterfront Street

Silent Circle Financials and Metrics

Summary Metrics

Founding Date


Total Funding

$130 m

Latest funding size

$50 m

Time since last funding

over 1 year


Silent Circle's latest funding round in July 2016 was reported to be $50 m. In total, Silent Circle has raised $130 m

Silent Circle's Web-traffic and Trends

Silent Circle Online and Social Media Presence

Silent Circle Company Life and Culture

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