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by cgabios 4045 days ago
It's one thing to demonstrate a PoC live on life/safety critical systems, it's another to brag about sources & methods on social media, leave your machine powered-on and blab contents to anyone and everyone whom can be called as a witness (whether hostile, material or voluntary).

0. NEVER TALK TO THE COPS. [0]

1. NEVER LEAVE ENCRYPTED MACHINES HOT (decryption keys or filesystem cache in memory). FireVault 2 optionally leaves keys in memory [1, 2]

2. NEVER REUSE PASSWORDS OR PREVIOUSLY CONFISCATED GEAR (start fresh, beware of firmware and other hard-to-detect hw mods)

Presume mil/gov vuln shops have high cost USB, FireWire and Thunderbolt DMA memory cloning capabilities. If a machine has gone out of your possession, good luck finding which injection-molded part now contains a keylogger which will allow them to unlock your cloned disk images and RAM image after-the-fact (to get your password to get your fv key). (It's not tinfoil far-fetched if you go out of your way to get on one of the various govts department's radar.)

BTW, laptop was a MacBook Pro (Retina, 15-inch, Late 2013)

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References:

0: https://youtu.be/6wXkI4t7nuc

1: destroyfvkeyonstandby https://developer.apple.com/library/mac/documentation/Darwin...

2: https://security.stackexchange.com/questions/18720/how-secur...