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 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 Data and Metrics

Summary Metrics

Founding Date


Total Funding

$130 m

Latest funding size

$50 m

Time since last funding

about 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

Traffic Overview of Silent Circle

Silent Circle Online and Social Media Presence

Silent Circle News and Updates

Sirin, maker of the Solarin $14K smartphone, cuts 30 staff and weighs pivot

 So much for super-private, high-end phones for the super-rich? Sirin Labs, the startup that makes the Solarin, an Android-based smartphone released last May with a $14,000 price tag and promise of extreme security for its owner, is laying off one-third, or 30, of its staff after seeing just $10 mil…

Attention, White House Staffers: Here’s A Complete List Of Secure Messaging Apps

After a rash of leaks, White House press secretary Sean Spicer reportedly warned White House staffers against using secure messaging apps like Signal (offered by Open Whisper Systems) and Confide (known for self-destructing messages and blocking screenshots). But those aren’t the only such apps … Co…

No Entry: 70+ Startups Securing IoT, Cars, And Critical Infrastructure In One Market Map

As internet-connected hardware proliferates, there’s been a corresponding rise in cyber security threats, with malicious hackers using these new digital entry points to infiltrate and disrupt systems. In turn, startups focused on securing the Internet of Things (IoT) and the … Continued

Swiss public back law expanding surveillance powers

 In the wake of the 2014 Snowden revelations about mass surveillance programs some startups with concerns about overreaching government requests for user data settled on Switzerland as a base for their business — owing to what they dubbed favorable privacy laws. However they might need to have a ret…

From IIoT Security To Quantum Encryption: 105 Cybersecurity Startups In A Market Map

Cybersecurity funding activity has seen dramatic growth over the last four and a half years, peaking in 2015 before leveling off slightly in the first half of this year, amid investor worries that the space is over-funded. We used CB Insights data to … Continued
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Silent Circle Company Life and Culture

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