Hacking the T-Mobile Sidekick, 20 Years Too Late
Summary
Hacking the T-Mobile Sidekick, 20 Years Too Late chronicles an individual’s deep dive into DangerOS and the Sidekick platform. The piece covers how the device’s security model relied on signed Danger keys, the discovery and extraction of developer keys, and a modern cryptographic challenge to sign old keys, plus the recreation of Danger’s backend and browser-based simulator. It highlights both the risks of vendor-locked devices and the nostalgia of reviving legacy hardware with contemporary tooling.