Has anyone ever heard of the Checksum
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Thread: Has anyone ever heard of the Checksum

  1. #1
    Junior Member Ulti-Turd's Avatar
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    Question Has anyone ever heard of the Checksum

    called OPT-Out? or anything by that name?
    0100100100100000010100100101010101001100010001010010000001010000010011110100111101010000

  2. #2
    Senior Member wiskic10_4's Avatar
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    Ulti-Turd... (cute handle )
    Nope, never heard of it...

    But...

    A checksum is:

    a value that is used to check the integrity of data. Checksums are generated by a function that is dependent upon the data in ...
    (first definition from Google - "define:checksum”)

    opt-out means to "get out of"...
    and a quick search for "OPT-Out" yields many results, one being an online business that :

    …created this web site to make it as easy as possible for you to opt-out of having your personal information shared and sold by the companies you interact with…
    (from http://opt-out.cdt.org/)

    So – I’m a little confused… maybe you could elaborate a little? I mean, it's sort of like saying "Anyone ever heard off a checksum called Green Beans?"
    I don't get it...
    -Wiski

    edit: Maybe this is what you're talking about? http://en.wikipedia.org/wiki/Opt_in_e-mail
    Last edited by wiskic10_4; February 28th, 2008 at 02:32 AM.
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  3. #3
    Junior Member Ulti-Turd's Avatar
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    Quote Originally Posted by wiskic10_4
    Ulti-Turd... (cute handle )
    Nope, never heard of it...

    But...

    A checksum is:


    (first definition from Google - "define:checksum”)

    opt-out means to "get out of"...
    and a quick search for "OPT-Out" yields many results, one being an online business that :


    (from http://opt-out.cdt.org/)

    So – I’m a little confused… maybe you could elaborate a little? I mean, it's sort of like saying "Anyone ever heard off a checksum called Green Beans?"
    I don't get it...
    -Wiski

    edit: Maybe this is what you're talking about? http://en.wikipedia.org/wiki/Opt_in_e-mail
    ty for the references ill keep them in mind, i dont want to sound like im gonna be attempting to hack into this site. but i heard myspace uses OPT-out algorithms, or some sort of encryption on the userID, or friendID.
    0100100100100000010100100101010101001100010001010010000001010000010011110100111101010000

  4. #4
    Keeping The Balance CybertecOne's Avatar
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    Quote Originally Posted by Ulti-Turd
    i dont want to sound like im gonna be attempting to hack into this site.
    You Didnt...... until just then....

    Perhaps its just a program for doing checksums called Opt Out? Much like the beloved MD5 Summer?

    Peace

    CTO
    "Any intelligent fool can make things bigger and more complex... It takes a touch of genius --- and a lot of courage to move in the opposite direction."
    - Albert Einstein

  5. #5
    Super Moderator: GMT Zone nihil's Avatar
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    Probably nothing to do with it? but I do recall there was some fuss a while back regarding "opt-out" and "opt-in" approaches to handling the serving of targeted advertising?

    I think that myspace and facebook handle them differently.

    Is that what you are talking about?
    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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  6. #6
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    Hi

    Short answer:

    I never heard of a checksum called "opt-out".
    Also, as far as I know, there is no mechanism or technique
    called "opt-out" with respect to checksums.

    No comments on the 'security' of myspace, facebook et al.




    Broader view, just because it's interesting:

    opt-int/opt-out[nice definition: 1] has a variety of implications,
    starting from software engineering up to laws, regulations and compliance.


    opt-in
    requires action or affirmation by an individual for inclusion. default: exclusion

    opt-out
    requires action or affirmation for exclusion. default: inclusion


    Facebook et al:
    As nihil said, there was an issue with facebook[2]
    a couple of months ago - they established an opt-out issue for marketing
    purposes (default: inclusion).

    Mailing lists:
    Usually, a double opt-in mechanism is applied (confirmation mail) with an
    opt-out possibility (beware of spam-mail opt-out though ...)

    Spam-Filtering:
    "Grey listing" is some kind of double opt-in mechanism. If
    applied correctly, spam mails can be reduced up to 90%. Well, currently ...

    WebForms:
    Often opt-in question are pre-set with yes (affirmation), which is
    questionable practice by law in some countries (e.g. germany IIRC).
    Sometime, opt-out questions are pre-set with no (ie. inclusion!), which also
    is questionable practice.



    Cheers

    [1] http://www.inc.com/articles/2002/10/24718.html
    [2] http://www.independent.co.uk/life-st...ce-761683.html
    If the only tool you have is a hammer, you tend to see every problem as a nail.
    (Abraham Maslow, Psychologist, 1908-70)

  7. #7
    Keeping The Balance CybertecOne's Avatar
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    Quote Originally Posted by sec_ware
    opt-int/opt-out[nice definition: 1] has a variety of implications,
    starting from software engineering up to laws, regulations and compliance
    I would say wherever it was read, that would be what it is pertaining to. Ya.

    CTO
    "Any intelligent fool can make things bigger and more complex... It takes a touch of genius --- and a lot of courage to move in the opposite direction."
    - Albert Einstein

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