Insights

Secure Mobile Growth Silent Circle’s Blackphone launches show a clear emphasis on secure mobile devices alongside its privacy platform, making a compelling entry point for regulated industries and enterprise mobile programs that require encrypted voice, text and data.

Unified Privacy Platform Its offering spans devices, software and services, enabling a unified privacy stack that can be upsold as an end to end solution for data protection, compliance and secure collaboration across mobile, desktop and cloud.

Firewall and Server GoSilent Server and GoSilent Mobile Firewall provide hardened, policy driven controls, presenting cross sell opportunities to existing customers and partners looking to strengthen network and endpoint privacy within hybrid work environments.

Public Sector Path Historical partnerships and recognition in cyber security awards suggest a credible route to government and defense sectors through system integrators and federal procurement channels.

Credible Growth With security leadership from industry veterans and meaningful funding, Silent Circle can scale its sales capabilities, expand channel partnerships, and accelerate enterprise adoption of privacy first communications.

Silent Circle Tech Stack

Silent Circle uses 8 technology products and services including Linkedin Insight Tag, Django Cross Site Request Forgery protection, PHP, and more. Explore Silent Circle's tech stack below.

  • Linkedin Insight Tag
    Analytics
  • Django Cross Site Request Forgery protection
    Middleware Software
  • PHP
    Programming Languages
  • Python
    Programming Languages
  • Cloudflare Bot Management
    Security
  • X-XSS-Protection
    Security
  • ZURB Foundation
    UI Frameworks
  • AddToAny
    Widgets

Media & News

Silent Circle's Email Address Formats

Silent Circle uses at least 1 format(s):
Silent Circle Email FormatsExamplePercentage
FLast@silentcircle.comJDoe@silentcircle.com
98%
First.Last@silentcircle.comJohn.Doe@silentcircle.com
2%

Frequently Asked Questions

Where is Silent Circle's headquarters located?

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Silent Circle's main headquarters is located at 7134 Columbia Gateway Drive Columbia, Maryland 21046 United States. The company has employees across 4 continents, including North AmericaEuropeAsia.

What is Silent Circle's phone number?

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You can contact Silent Circle's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Silent Circle's official website and social media links?

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Silent Circle's official website is silentcircle.com and has social profiles on LinkedIn.

What is Silent Circle's NAICS code?

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Silent Circle's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does Silent Circle have currently?

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As of February 2026, Silent Circle has approximately 51 employees across 4 continents, including North AmericaEuropeAsia. Key team members include Chief Marketing And Strategy Officer: J. K.Vice President - Financial Planning & Analysis: F. O.Vice President Sales: J. R.. Explore Silent Circle's employee directory with LeadIQ.

What industry does Silent Circle belong to?

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Silent Circle operates in the IT Services and IT Consulting industry.

What technology does Silent Circle use?

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Silent Circle's tech stack includes Linkedin Insight TagDjango Cross Site Request Forgery protectionPHPPythonCloudflare Bot ManagementX-XSS-ProtectionZURB FoundationAddToAny.

What is Silent Circle's email format?

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Silent Circle's email format typically follows the pattern of FLast@silentcircle.com. Find more Silent Circle email formats with LeadIQ.

How much funding has Silent Circle raised to date?

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As of February 2026, Silent Circle has raised $50M in funding. The last funding round occurred on Jul 15, 2016 for $50M.

When was Silent Circle founded?

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Silent Circle was founded in 2012.

Silent Circle

IT Services and IT ConsultingMaryland, United States51-200 Employees

Silent Circle operates in IT services and IT consulting, focusing on enterprise privacy through a platform that combines devices, software, and services for secure communications. Its stated aim is to be a trusted provider of private, secure communications, delivered without compromise. Based in Columbia, Maryland, the company was co-founded by security experts Mike Janke, Phil Zimmermann, and Jon Callas, reflecting a pedigree in encryption and secure technology.

Its customer base comprises enterprises and their partners and customers seeking privacy in a mobile-first environment, addressing privacy concerns in modern communications. It sits within the IT services and security/privacy space, emphasizing enterprise privacy and the protection of mobile communications. In April 2025, Silent Circle launched Blackphone, a secure Android device offering encrypted voice, text, and data, demonstrating ongoing product development in its secure communications platform.

Section iconCompany Overview

Headquarters
7134 Columbia Gateway Drive Columbia, Maryland 21046 United States
Phone number
NAICS Code
5415 - Computer Systems Design and Related Services
Founded
2012
Employees
51-200

Section iconFunding & Financials

  • $50M

    Silent Circle has raised a total of $50M of funding over 3 rounds. Their latest funding round was raised on Jul 15, 2016 in the amount of $50M.

  • $10M$25M

    Silent Circle's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $50M

    Silent Circle has raised a total of $50M of funding over 3 rounds. Their latest funding round was raised on Jul 15, 2016 in the amount of $50M.

  • $10M$25M

    Silent Circle's revenue is estimated to be in the range of $10M$25M

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