[marcusb]

> If you have a modern iPhone and don’t want the crazy hacks, a very very simple but effective tip is to power off your iPhone when exiting the aircraft. When the device powers up it is in “before first unlock” mode and is severely restricted in what it can do. The attack surface area is significantly reduced.

From a comment in the article:

"Schneier’s border crossing opsec advice is characteristically thorough, but the recommendation to simply ‘turn off your phone’ undersells modern forensic capabilities. As a security consultant who’s testified in border device seizure cases, I’ve seen CBP’s Cellebrite tools extract data from ‘off’ iPhones up to 72 hours post-shutdown via remnant charge in memory chips (see 2024 DEFCON demo). The article’s Faraday bag suggestion works, but only if activated before entering the 100-mile border zone – we’ve documented RFID sniffers in airport limo services."