Has anyone ever heard of the Checksum

[Ulti-Turd]

called OPT-Out? or anything by that name?

[wiskic10_4]

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

[Ulti-Turd]

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.

[CybertecOne]

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

[nihil]

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?

[sec_ware]

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

[CybertecOne]

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