Prev: Using Mail
Next: ghostscript.dmg for 10.6.3?
From: d4g4h4 on 16 Jun 2010 20:52 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 16 Jun 2010 21:44 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 16 Jun 2010 23:05 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 16 Jun 2010 23:11 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 16 Jun 2010 23:23
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. |