Enterprise SaaS Security at Scale: Inside T-Mobile’s Work with Obsidian

PUBlished on
March 18, 2026
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updated on
March 18, 2026

For years, Obsidian Security has worked alongside leading enterprises to secure SaaS at scale. At T-Mobile, where speed, innovation, and security must move in lockstep, Obsidian works with the cybersecurity team to help protect a SaaS ecosystem that supports customers and employees.


Obsidian Security recently sat down with Mark Clancy, SVP, Cybersecurity at T-Mobile, and his team at T-Mobile’s new, state-of-the-art Cyber Defense Center to understand how it is enforcing high security standards across its broad SaaS ecosystem.

Securing SaaS is different. We're operating within a partner's infrastructure, and getting the knobs and dials right across many platforms is critical. Obsidian gives us the visibility and control to do exactly that, helping us get ahead of issues before they become problems. To all my fellow CISOs out there, if you’re not paying attention to how your SaaS environments are set up, you’re missing a lot of exposure – Mark Clancy, SVP, Cybersecurity, T-Mobile.

Meet some of T-Mobile’s cybersecurity team members and learn about how Obsidian is helping them further secure SaaS:

Also, download a detailed case study that may help you with valuable insights on how to secure your SaaS environment:

We are proud to serve customers like T-Mobile, where security is part of the foundation for innovation at enterprise scale.

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