Virus removal
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Thread: Virus removal

  1. #1
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    Virus removal

    Hello guys, I've heard that viruses are never removed from the hard disk even we use an anti virus program to clean it. It is right or not

    Thanks for response

  2. #2
    Only african to own a PC! Cider's Avatar
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    Abit of an arb question mate.

    Malware is generally "disinfected" or "Deleted" so I would say its gone ... (ppl going to argue here :P).

    However , do you really know that your system is clean?
    The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.
    Albert Einstein

  3. #3
    Senior Member Wazz's Avatar
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    Most Anti-Virus programs Quarantine threats when they are found, I think this may be what you mean. Threats are moved to a safe "container" where they cannot be invoked or spread in the event that removing an infected system file causes system instability, crash, blue screen, etc. The file in question could be restored upon causing any system problems...
    "It is a shame that stupidity is not painful" - Anton LaVey

  4. #4
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    Most AV programs allow the user to set actions to be taken when a virus is detected.
    Quarantine is just one of them.

  5. #5
    Senior Member Wazz's Avatar
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    Correct, you can set actions, but the default is usually quarantine......just pointing out the option relevant to his question ;-)
    "It is a shame that stupidity is not painful" - Anton LaVey

  6. #6
    Super Moderator: GMT Zone nihil's Avatar
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    Strictly speaking the virus is still there, and, as has been mentioned, it all depends on your AV settings and how it works.

    If the AV uses a "secure deletion" method (that is, it overwrites the virus code) then the virus is gone as far as software recovery is concerned and only might be recoverable by destructive forensic methods.

    I personally prefer the quarantine approach, as you can easily check which files you will have to replace with clean versions

    EDIT:

    Most antiviruses will either delete or quarantine anything they can't clean. As Wazz quite rightly observes this can often cause systems instability, which is why I always take the quarantine option until I have things sorted out.
    Last edited by nihil; December 8th, 2011 at 03:05 PM.
    If you cannot do someone any good: don't do them any harm....
    As long as you did this to one of these, the least of my little ones............you did it unto Me.
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  7. #7
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    that are depend antivirus is updated or not ?mostly virus are deleted when antivirus in updated forms .

  8. #8
    Super Moderator: GMT Zone nihil's Avatar
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    Hi, samuelwilliam,

    Yes, your anti-malware tells you that the item is "deleted"; but in reality it isn't. The electro-magnetic imprints will remain on your hard-drive until it is physically destroyed.

    O.K. in practical terms it has been de-activated, and cannot be accessed or run on your system, but it is still there.

    IT security rule no.3: "Deleted isn't"
    Last edited by nihil; January 7th, 2013 at 11:03 PM.
    If you cannot do someone any good: don't do them any harm....
    As long as you did this to one of these, the least of my little ones............you did it unto Me.
    What profiteth a man if he gains the entire World at the expense of his immortal soul?

  9. #9
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    Or use a program like Eraser or Ccleaner to remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns.

    Read more: Eraser - CNET Download.com http://download.cnet.com/Eraser/3000...#ixzz2HMkCoxWh

  10. #10
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    Or use a program like Eraser or Ccleaner to remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns.

    Read more: Eraser - CNET Download.com http://download.cnet.com/Eraser/3000...#ixzz2HMkCoxWh

    Yes you will just bury it.

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