Security, Resilience, and the Future of Mobile Infrastructure

March 26, 2026

AI Summary

5 min read

John Doyle, founder and CEO of CAPE, and Justin Pennelli, CTO of the Navy, discuss building secure mobile networks amid threats like the Chinese hacking operation Salt Typhoon. CAPE operates as a global mobile virtual network operator (MVNO), delivering cellular service in 190 countries by renting tower capacity from incumbents and layering secure software on top. Their conversation covers CAPE's security practices, a Navy pilot on Guam, and principles for accelerating defense tech adoption.

CAPE's Secure Network Design

CAPE differentiates on privacy, security, and resilience. For privacy, it rotates phone identifiers like Apple rotates Mac addresses, minimizing persistent tracking. Security stems from rejecting telecom industry norms: instead of off-the-shelf components, CAPE's team—mostly ex-defense tech, not telecom veterans—uses commercial cloud practices and builds custom replacements for weak links. An example: during lawful intercept setup (required by CALEA for wiretap compliance), CAPE's SRE team found a vendor's installer with unencrypted client usernames and passwords, three months before Salt Typhoon disclosures. They switched vendors.

Continue reading the full summary in the app — free to try.

Read Full Summary →

Free • No credit card required

Listen to Audio Summary Open in App

What you'll learn

1 (00:00) **Salt Typhoon Intro** - Opening hook on Chinese infiltration of US telcos and CAPE's clean-install approach on Guam
2 (01:47) **Guest Introductions** - Host David Yulovic welcomes Navy CTO Justin Pennelli and CAPE CEO John Doyle
3 (02:23) **Justin's Navy CTO Background** - Pennelli details engineering roots, DARPA/ARPA-H, shift to software-defined warfare
4 (05:10) **John's Background and CAPE Overview** - Doyle's Green Beret, Palantir, path to founding CAPE as secure global MVNO
5 (09:04) **Navy Priorities Under Pennelli** - Focus on accelerating software acquisition, training for commercial tech
6 (13:09) **CAPE-Navy Meeting and Guam Pilot** - Doyle briefs PEO Digital; simulates compromised infra, pilots on Guam via DIU/sub-prime
7 (16:21) **Scaling Pilots and Wildcatting** - Navy pushes 25 pilots/year; CAPE greases funnel with comparative advantages

+ Full timestamped outline available in the app

Show Notes

David Ulevitch speaks with Justin Fanelli, CTO of the Navy, and John Doyle, founder and CEO at Cape, about how the Navy is transforming its approach to technology adoption, from running bootcamps for program managers to piloting commercial solutions in months instead of years. They discuss the Salt Typhoon breach that exposed China's infiltration of American cellular networks, how Cape built a secure alternative, and what defense tech founders need to understand about selling to the government.

Resources:

Follow Justin Fanelli on LinkedIn: https://www.linkedin.com/in/justinfanelli/

Follow John Doyle on X: https://twitter.com/JohnDoyleCape

Follow David Ulevitch on X: https://twitter.com/davidu

Stay Updated:

Find a16z on YouTube: YouTube

Find a16z on X

Find a16z on LinkedIn

Listen to the a16z Show on Spotify

Listen to the a16z Show on Apple Podcasts

Follow our host: https://twitter.com/eriktorenberg

Please note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. a16z and its affiliates may maintain investments in the companies discussed. For more details please see a16z.com/disclosures.

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.