The 'Z' in ZRTP stands for 'Zimmermann.'
Our business is to encrypt and secure your communications. We take this very seriously. The physical security of our servers, networks, and equipment is equally as important as data security. That is why we own, control, and when necessary, custom-build our own equipment as well as employ the strictest security measures. The protection of your communications is what we do best. Our Silent Network provides the backbone to our encrypted communications service. There's no sharing of our dedicated network. We have custom-built servers, CODECs, software and hardware that ensure security integrated through design.
When a Silent Circle subscriber makes a phone call, sends a text or video chats with another Silent Circle member, that transmission is secured and encrypted end-to-end from their iPhone, Android device, iPad or Windows computer on our crystal-clear secure network.
We have scoured the Earth for the best connectivity and the shortest paths. With the combination of compressed data and high-speed proprietary CODECs, you can communicate effectively and securely with unbelievable call clarity on your very next conference call. Add a non-member to the conference and you're still encrypted between our proprietary network and your device. Send up to 100MB attachments in the blink of an eye to any other Silent Circle mobile user, worldwide. Connect via cellular or wifi with Silent Phone or Silent Text and you're communicating – securely.
We take your privacy and trust seriously
Our founders have been creating cryptography and secure communications tools for over 20 years. We have learned a lot over this time. We are transparent about what we can and cannot protect. We think it’s important that our customers know how Silent Circle responds to government demands for user data. It’s important for law enforcement organizations to know this too.
We log only enough information to provide and maintain our services to you: no more, no less. We are pleased to join a diverse group of online service providers who put their users' privacy first by adopting such policies. As such, we follow the industry best practices for privacy-preserving organizations by retaining as little information about our customers' activities as possible. We store only the amount of information necessary for our business functions.
We follow the encryption best practice of not holding or having access to the keys used to encrypt our customers' private communications data whenever possible. Accordingly, our secure communications products use "peer-to-peer" encryption. We don’t hold the keys to anything; the customers do. Any conversation, video, text, or video teleconference is encrypted from your device to the other party's. We have no access to it, none. We can’t disclose what we don’t have access to.
Silent Circle believes strongly in transparency. As such, all source code repositories for Silent Circle can be viewed at the links below. Likewise, Silent Circle hosts a bug bounty program for reporting qualifying security vulnerabilities.
Please visit the links below for a complete explanation of our policies, compliance and protocols.
