From: d4g4h4 on
TaliesinSoft <taliesinsoft(a)me.com> wrote:

> I just now received an email, supposedly from Apple, that asserts that
> my MobileMe account will be suspended for 48 hours unless I respond to
> the mail by clicking on a URL and then updating my account information,
> er uh credit card and such. I would suggest that anyone else receiving
> the message also ignore it.

Was it sent to your mobileme email address?

--
(*) of the royal duchy of city south and deansgate
www.davidhorne.net (email address on website)
"[Do you think the world learned anything from the first
world war?] No. They never learn." -Harry Patch (1898-2009)
From: Wes Groleau on
On 06-16-2010 20:03, David Empson wrote:
> The card number is no use by itself: at a minimum they would also need
> the name on the card and the expiry date. For most online purchase
> situations they also need the three digit validation code printed on the
> back of card (not embossed, and it is randomly generated each time you
> are issued a new card).

Oh, I thought he was talking about the validation code.

--
Wes Groleau

He that is good for making excuses, is seldom good for anything else.
-- Benjamin Franklin
From: nospam on
In article <hvbmdb$nve$1(a)news.eternal-september.org>, Wes Groleau
<Groleau+news(a)FreeShell.org> wrote:

> > of theirs. If you don't at least go to the trouble of making your credit
> > card number "checksum" right (there's an algorithm for that, which isn't
> > hard to find, but I didn't bother to do so for this posting), I'd guess
>
> I find that hard to believe. The sensible thing for a card provider to
> do would be to associate each account with a _random_ check number.

it's true, but there is an additional 3 digit cvv code on the back of
the card so even if you can hack the number on the front, you still
have some additional work to do.

> If the number can be obtained by an easy-to-find algorithm, then
> any crook that sees the account number could use it on-line.

in addition to the number, you need the cvv code, the owner's name and
usually his/her address.
From: nospam on
In article <1jk8aq9.nyxhig1rnt12tN%dempson(a)actrix.gen.nz>, David Empson
<dempson(a)actrix.gen.nz> wrote:

> I have a FileMaker Pro database which includes the formula for verifying
> that a credit card number is valid. It isn't particularly long but it is
> complex enough that I haven't tried to analyse it.

it's actually very simple.

> It wouldn't be hard for a crook to generate a random credit card number
> with a valid checksum, and the first four digits known to be valid (they
> identify the card issuer and the credit card type).

the first digit is the credit card type (5=mastercard, 4=visa) and the
first six digits identify the bank.
From: krishnananda on
In article <160620102305596975%nospam(a)nospam.invalid>,
nospam <nospam(a)nospam.invalid> wrote:

> it's true, but there is an additional 3 digit cvv code on the back of
> the card so even if you can hack the number on the front, you still
> have some additional work to do.

Except for American Express, which uses a 4-digit code printed on the
_front_ of the card.
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