Security researcher @wh1te4ever has demoed an interesting WebKit-based re-jailbreak utility for iOS 12 on a device running the Chimera jailbreak.

With the new LockTimeX add-on for Xen HTML, you can get the modern iOS 16 Lock Screen aesthetics on iOS 9-12 on legacy devices.

Alfie CG has just published a write-up about a deterministic kernel exploit called Trigon that can't fail when used.