Privacy By Design For Everyone

Welcome to the Calyx Institute

Our mission is to educate the public about privacy in digital communications and to develop tools that anyone can use. By embracing "privacy by design," we help make digital security and privacy more accessible to everyone.

Join Calyx!

As a member, you join a growing community of privacy enthusiasts, researchers, and developers working toward an open and secure internet.


Unlimited 4G Internet

Calyx members, at the Contributor level or higher, enjoy unlimited 4G internet via a mobile Wi-Fi hotspot.


PRL Update for Improved Roaming

If you have a hotspot as part of our Contributor or Contributor Plus memberships, we have big news for you! We are pleased to let you know that another roaming update will take place this weekend for our mobile hotspots. In order to receive this latest Preferred Roaming List (PRL) update, please restart your hotspot this Sunday (05/02/21) and keep it powered on this Tuesday (05/04/21).

Once your hotspot accepts the PRL update, your service will continue on the Sprint network as normal. With this update, your device will also have improved roaming capabilities on the T-Mobile network. Roaming on the T-Mobile network will only occur when your device is no longer on the Sprint network, and where the T-Mobile network is available. For those of you who have been our members for a while, you may remember that a similar PRL update happened last fall to expand our hotspots' access to the T-Mobile network when Sprint is not available. We expect the effects of this PRL to be similar to the previous one in terms of increasing access to T-Mobile's network as a result of the merger between Sprint and T-Mobile.

Your Calyx Institute membership benefits will still include unlimited 4G data and no throttling, as always.

If you are having questions about this PRL update, we recommend reaching out for additional info to Sprint at 877-879-5031 and tech support at 877-216-9603. If your device experiences any issues, please call tech support at 877-216-9603 to troubleshoot and get started on a warranty replacement if needed. Don't hesitate to email us at if there's anything we can do to make your Calyx Institute membership great!

We're Hiring a Systems Developer / Systems Administrator

We're hiring a systems administrator / systems developer at The Calyx Institute! This role will become responsible for developing and maintaining parts of The Calyx Institute’s infrastructure. We are looking for someone to help modernize, update, and properly document these services and their setup as Calyx continues to grow. Our digital services include our instances of Jitsi, CalyxVPN (running on the Bitmask platform), Mumble, XMPP/Jabber, Mail, Tor servers and Onion services, our website, DNS, and mirror servers for partner organizations (such as the Tor Project).

The Calyx Institute is a not-for-profit education and research organization devoted to studying, testing, developing, and implementing privacy technology and tools to educate the public and promote free speech, free expression, civic engagement and privacy rights on the internet and in the mobile telephone industry. Calyx offers a range of tools and technologies for secure communications and censorship circumvention to users around the globe.

We think a successful candidate for this role would join us with the skills and experience to be able to:

  • Git: forking, branching, merging, reviewing, and rebasing. Ansible: writing ansible playbooks, deploying and maintaining servers using ansible, and troubleshooting problems.
  • Interest in containers: building and registering images, deploying containers, upgrading containers.
  • Use SSH: generating keys, validating host keys, installing authorized keys.
  • Ease and comfort using command line tools and shell scripts in a Linux environment.

Bonus points if you have experience with or an interest in:

  • Security planning: some previous exposure to information security basics, such as inventory management, upgrade and security patch management, and threat modeling.
  • Container orchestration: some previous exposure to any container orchestration system, such as Kubernetes, Docker Swarm, etc.
  • Debian: experience with Debian or another apt-based Linux distribution.
  • Networking: some previous exposure to topics in network administration, including network optimization, isolation, BGP routing, DDoS mitigation, and so on.
  • Working on other privacy, security, or censorship-circumvention technologies or projects.

We know that there are amazing candidates that won’t match the job description as we’ve written it. We don’t expect you to meet all of the above requirements. If you feel that you meet several of these requirements or could meet them with a little support, we would love to hear from you. At The Calyx Institute, we all wear many hats, but we don’t expect anyone to wear every hat.

In the coming year, we expect that you would be able to:

  • System Administration: manage Calyx Institute servers using best practices such as infrastructure-as-code, regular backups, failure recovery plans, timely updates and security patches, data minimization, and privilege isolation.
  • System Development: lead the design and automation of Calyx's public and private digital services, currently including CalyxOS build pipeline, voice conference, VPN, chat, email, DNS, Tor gateways, support tickets, and various web services.
  • Information Security: coordinate regular assessments of Calyx Institute's security profile, including practices for signing builds, maintaining keys, use of email, patch management, safeguarding data, and privilege assignment.

In the long term, we expect that you will be able to:

Help us to design and deploy the next generation of Calyx Institute infrastructure, including containerization, continuous integration, centralized logging, privacy-respecting analytics, threat detection, high availability, single-sign on, and scalable storage for CalyxOS user backups and data synchronization.

We think this role might be an especially good fit for someone who:

Wants to be engaged in our mission of educating the public about privacy and surveillance, and our work in providing privacy-by-design services and working support users who are disproportionately targeted by surveillance and censorship.

This is a full-time, salaried position located remotely within the United States or at our Brooklyn, NY office, beginning mid-June.

Salary and Benefits We are offering a salary of $75,000 - $100,000, commensurate with experience and qualifications. Calyx offers health, vision, and dental insurance, sick leave, three weeks vacation time, and holidays off.

How to Apply

Please send the following to with a subject line that includes “Systems Developer / Systems Administrator”:

  • A cover letter in PDF format.
  • A 1-2 page resumé in PDF format.
  • 2 professional references with contact information.

The Calyx Institute is an equal opportunity employer. Calyx encourages applications from all qualified individuals without regard to race, color, religion, gender, sexual orientation, gender identity or expression, age, national origin, marital status, citizenship, disability, veteran status and record of arrest or conviction.

We think a strong candidate will exhibit competencies in technical project management, clear communication, and trust building.

All interviews will be held remotely. We will respond to all applicants to inform them of whether we would like to schedule an interview. If you have not heard back from us within two weeks of your application, please reach out.

Candidates who are selected for a second-round interview will be asked to complete a questionnaire or short assessment exercise before the interview. This will take no more than two hours, and is intended to better understand how you might approach challenges similar to those you would find in this role. This will not include work that can be used in the real world, and is not a test, but rather is intended to help better inform the interview process.

Meet Team CommUNITY, our newest grantee!

Calyx is excited to announce a general support grant to the Team CommUNITY program of ARTICLE 19, a leading freedom of expression nonprofit organization. Team CommUNITY cultivates digital rights and privacy communities throughout the world, offering services like facilitation for both online and offline gatherings, training on “secure organizing” and group threat modeling, and holistic security for community networks and events. You can read more about their work on their website.

Happy New Year!

Thanks again to all our wonderful members, old and new! Just a quick reminder that our shipping team is only two people, so we're not able to ship as fast as Amazon or other online entities with vast resources and staffs. We're a small, scrappy organization doing our absolute best to protect online privacy, empower internet users and bridge the digitial divide with the limited resources we have. Your enthusiasm for our mission and our memberships is amazing, and we thank you so much for bearing with us while we get your new member benefits packages out to you ASAP!

Holiday Hours

Our staff are taking time off from their normal schedules over the next week, so please be patient if our replies are slower than expected!

Also, just a reminder that our hardware provider no longer carries the Mifi 8000, so we don't expect to have it in stock again. We do plan to have advanced hotspots of a different model available again next year, but we haven't yet decided what model will be available or when we will be ready, so please stay tuned to our website and social media for updates!

Mifi 8000 having issues? Try this!

If your Mifi 8000 has recently started exhibiting issues, please try the following process that has helped several member regain internet access, originally suggested by communty member Hadet the Undying: Go into the advanced settings on my MiFi, click Network. Turn off automatic network selection. Click through, manually selecting the the network selected Sprint 310320 and reboot. Might take a couple attempts.

If that does not work, please call tech support at 877-216-9603

For Tech Support Please Call 877-216-9603

Hi all! Our Helpdesk has been much busier over the weekend and last few days with an unusually high number of tech issues affecting several members' hotspots. If you've tried to reach out to us during this time and experienced a slow response time, we apologize profusely: our member services team is only two people, and we are working as fast as we can to help as many people as possible. As always, to resolve tech issues with your hotspot please call tech support at 877-216-9603. For questions about your membership start/end dates, hotspot information, and renewal help please reach out to us at helpdesk@

Our latest grant recipient: The Library Freedom Project

The Calyx Institute is pleased to announce that we are providing a grant to the Library Freedom Project (LFP) to support its work in collaborating with teens to create a set of privacy resources for people ages 13-19 with special attention to the needs of youth in the Black, Indigenous, and People of Color and LGBTQ communities. Teenagers have unique concerns and needs when it comes to protecting their privacy online, and The Calyx Institute looks forward to working with LFP to make sure teens have the resources they need to use the internet safely and without surveillance.

As a leader in the library world, LFP has nearly 100 Privacy Advocates representing privacy and free access to information everywhere from the largest urban public libraries to rural communities. Rather than buying into the myth that “teenagers don’t care about privacy” when it comes to interacting online, LFP’s Privacy Advocates know that the youth in their communities recognize privacy as a critical component of personal agency. LFP’s community of librarians will work with teen library patrons to create high-quality privacy resources for young people to meet the need for a robust set of privacy resources made just for teens, on topics they care about, using language and formats they understand. LFP will build this shareable set of resources with teen patrons for availability to all teens online.

Libraries have always worked to create opportunities for access and close the information gap that often confronts marginalized communities. LFP has exemplified this by pioneering the creation of resources that bring digital privacy education and tech programs into libraries. Since libraries are some communities’ most accessible place to get free computer help and internet access, LFP's efforts are critical in the work of expanding access and agency to the most underserved. To learn more about LFP, please visit

LFP is a privacy-focused nonprofit fiscally sponsored by The Tor Project, one of The Calyx Institute's favorite pro-privacy organizations. To learn more about our work with the Tor Project, please visit

The Calyx Institute’s Micrgrants and Small Project Support program is designed to sustain digital security and privacy education and software development through low overhead financial support to external organizations and individuals. Grants and project support are currently by invitation only. Please visit to see the projects we have supported and learn more about the program.

Mifi 8000 Update

Hi all! We've been getting a lot of questions about the Mifi 8000, which we no longer have in stock. We're no longer offering this device because our hardware provider no longer carries it. We don't expect this device to become available again as one of our membership offerings in the future, and we don't yet know when we'll have another Contributor Plus level hotspot with advanced features picked out to offer in its stead.

Unfortunately, we have a contract with our hardware provider that prohibits us from authorizing any hardware other than what they provide. We can't physically prevent you from swapping the SIM to another device, but our hardware provider does perform occasional audits, and if your SIM is detected outside the original hotspot they may interrupt your service. It doesn't happen often, but it does happen.

If you have any further questions, please don't hesitate to let us know at helpdesk@