Target confirms PIN data was stolen in breach
Target
confirmed Friday that debit card PIN data was stolen in its recent
massive breach, reversing its earlier stance that the codes were not
part of the hack.
However, the retailer believes the PINs remain
"safe and secure." In a statement, Target spokeswoman Molly Snyder said
the PINs are "strongly encrypted" and were never stored on Target's
systems in plain text.
In other words, from the moment a
customer entered a PIN after swiping a debit card, Target's payment
system translated that number into an indecipherable string of code.
Target claims that the PINs remained encrypted after they were stolen.
Not
only are the PINs encrypted, Target says the numbers can only be
decrypted by the independent payment processor, which holds the
decryption key. That key is necessary to translate the unintelligible
code back into the PIN. Target said the key was not stolen as part of
the breach, because it never existed within the company's systems.
Target hack: The latest
Target says it uses the Triple Data
Encryption Standard to encrypt its PIN codes. Per Thorsheim, an
Independent password security consultant, said the PINs encrypted with
the Triple DES algorithm would be "difficult or impossible to
decrypt," if the payment processor's decryption key was robust enough.
Target declined to comment on the identity of its payments processor.
That means it is very unlikely that thieves would be able to withdraw
money from ATMs using stolen debit card information. Consumers are
protected from certain instances of debit card fraud, but cash
withdrawals and purchases made with a PIN can be tricky to reverse.
As
a precaution, Target customers who shopped at Target when the breach
occurred should contact their banks to request a replacement card and
change their PIN.
The PIN theft revelation means that Target's
payment systems breach was larger than initially thought. That is common
in credit card breaches. When Marshalls' and TJ Maxx's parent company
TJX was hit with a massive breach in 2007, the company initially said 45
million accounts were hacked but upped that number to 94 million months
later.
Target says that its breach, which took place between
Black Friday and Dec. 15, compromised 40 million customers' payment
information.
Exd 22:7 If a man shall deliver unto his neighbour
money or stuff to keep, and it be stolen out of the man's house; if the
thief be found, let him pay double.
Exd 22:8 If the thief
be not found, then the master of the house shall be brought unto the
judges, to see whether he have put his hand unto his neighbour's goods.
Pro 29:24 Whoso is partner with a thief hateth his own soul: he heareth cursing, and bewrayeth it not.
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