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joecool99
Sep 30, 2013, 11:23 PM
stumbled over this video. so much for EFI lock safety.
this resets it in few seconds !

what is this ?

http://www.youtube.com/watch?v=WZhT6MWXFP8&feature=youtu.be



micrors4racer
Oct 1, 2013, 04:43 PM
stumbled over this video. so much for EFI lock safety.
this resets it in few seconds !

what is this ?

http://www.youtube.com/watch?v=WZhT6MWXFP8&feature=youtu.be

Probably the same tool Apple uses to reset it if you bring it in for them to do it. The EFI lock used to be an easily reset passcode that stops the machine from booting from an alternate source or otherwise being erased or accessed.

Not the same as FileVault which will keep protecting your data incase an attack such as the one in the video is done.

Weaselboy
Oct 1, 2013, 04:54 PM
Probably the same tool Apple uses to reset it if you bring it in for them to do it. The EFI lock used to be an easily reset passcode that stops the machine from booting from an alternate source or otherwise being erased or accessed.

I don't believe this is the same. Here (http://reviews.cnet.com/8301-13727_7-57542601-263/efi-firmware-protection-locks-down-newer-macs/) is an article that describes how Apple does it. I have read the same elsewhere, so I think the article is accurate.

From the article:

1. Boot with Option key held to display the boot menu's firmware password prompt.

2. Press Control-Option-Command-Shift-S to reveal a 33-digit hash (mixed letters and numbers) that contains an identifier for your specific motherboard and the Atmel chip used for your system. In this hash, the first 17 digits are an identifier for the system's motherboard, and the last 16 digits are a hash for the password.

3. Submit the hash to Apple, where someone will put it through a special utility to create a keyfile that is specific for your machine.

4. Place the file on a special USB boot drive and hold Option to load the boot menu and select this drive.

5. The system will read the file and properly reset the firmware password stored in the Atmel chip.

The article is worded a bit poorly making it sound like you (the user) does these things, but this is what the Apple technician does.

I keep seeing these Youtube vids and articles here and there and they all seem little sketchy with no real confirmation that the hack process works.