FileVault 2 ...How secure really is it?

Discussion in 'OS X Yosemite (10.10)' started by olletsocmit, May 30, 2015.

  1. olletsocmit macrumors 6502

    olletsocmit

    Joined:
    Jun 24, 2010
    Location:
    USA
    #1
    FileVault 2, how secure really is it. Are we talking this is good to prevent normal average people not to be able to just pull ur HDD and just access it in another computer? Or are we talking no worries if it gets into the wrong hands of someone that knows their stuff. Should we be using something much better and more secure. I have all my drives encrypted.

    I just came across this article on Engadget that you can use Passwore and get past FileVault 2 in under an hour.... This makes me think that anyone who knows how to download a torrent and is 1/2 decent with computers can pass the encryption. I am sure this is also software all law enforcement has a well..

    here is the article: http://www.engadget.com/2012/02/02/passware-claims-firevault-2-can-be-cracked-in-under-an-hour-sel/
     
  2. bobr1952 macrumors 68020

    bobr1952

    Joined:
    Jan 21, 2008
    Location:
    Melbourne, FL
    #2
    Probably shouldn't put a lot of credibility in a 3 year old article. :cool:
     
  3. kagharaht macrumors 6502a

    Joined:
    Oct 7, 2007
    #3
    There is also a 20% plus hit on performance. Search Ars article online and you'll find the review.
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    That is outdated info. That hack uses direct memory access (DMA) to access the data, and DMA access in OS X was blocked in Lion 10.7.2.

    It is not that bad on newer machines (i-series chips like i5 and up). Here are some benchmarks. I would be very surprised if the average user could tell the difference without running benchmark software.

    If you have data on there you care about at all, there really is little reason not to use FV2 IMO.
     
  5. olletsocmit thread starter macrumors 6502

    olletsocmit

    Joined:
    Jun 24, 2010
    Location:
    USA
    #5
    Yea I use FileVault and have all my external drives encrypted. As well as other things like 1Password. I think I do notice that it's slower when using it thou
     
  6. KALLT macrumors 601

    Joined:
    Sep 23, 2008
    #6
    I use FileVault on my Intel Core 2 Duo MacBook (2008) with an SSD and found the performance impact negligible, although booting takes a bit longer. I agree with Weaselboy, the security benefits outweigh the performance penalty if you find data protection important.
     
  7. steve23094 macrumors 68000

    steve23094

    Joined:
    Apr 23, 2013
    #7
    Does Filevault cause a problem if you get disk corruption?

    Let's say you had a logical fault with your files that would normally take an app like Diskwarrior to fix, does using FV mean it's impossible or more difficult to recover data?
     
  8. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #8
    I have not used Diskwarrior, but according to this review it works fine with FV2.

    I did have a disk error once a couple years ago I was only able to fix by unencrypting then fixing the error with Disk Utility, then reencrypting.
     
  9. KALLT macrumors 601

    Joined:
    Sep 23, 2008
    #9
    It’s also a good idea to make backups frequently. Corruption and disk failures can happen regardless of encryption.
     

Share This Page