Target: Customers' encrypted PINs were obtained
ATLANTA — Target said Friday that debit-card PINs were among the financial information stolen from millions of customers who shopped at the retailer earlier this month.
The company said the stolen personal identification numbers, which customers type in to keypads to make secure transactions, were encrypted and that this strongly reduces risk to customers. In addition to the encrypted PINs, customer names, credit and debit card numbers, card expiration dates and the embedded code on the magnetic strip on back of the cards were stolen from about 40 million credit and debit cards used at Target stores between Nov. 27 and Dec. 15.
Security experts say it's the second-largest theft of card accounts in U.S. history, surpassed only by a scam that began in 2005 involving retailer TJX Cos.
Target said it doesn't have access to nor does it store the encryption key within its system, and the PIN information can only be decrypted when it is received by the retailer's external, independent payment processor.
“We remain confident that PIN numbers are safe and secure,” spokeswoman Molly Snyder said in an emailed statement Friday. “The PIN information was fully encrypted at the keypad, remained encrypted within our system, and remained encrypted when it was removed from our systems.” The company maintains that the “key” necessary to decrypt that data never existed within Target's system and could not have been taken during the hack.
However, Gartner security analyst Avivah Litan said Friday that the PINs for the affected cards are not safe and people “should change them at this point.”
Litan said that while she has no information about the encrypted PIN information in Target's case, such data has been decrypted before, in particular the 2005 TJX Cos. hacking case that's believed the largest case of identity theft in U.S. history.
In 2009 computer hacker Albert Gonzalez plead guilty to conspiracy, wire fraud and other charges after masterminding debit and credit card breaches in 2005 that targeted companies such as T.J. Maxx, Barnes & Noble and OfficeMax. Gonzalez's group was able to decrypt encrypted data. Litan said changes have been made since then to make decrypting more difficult but “nothing is infallible.”
“It's not impossible, not unprecedented (and) has been done before,” she said.
Besides changing your PIN, Litan says shoppers should opt to use their signature to approve transactions instead because it is safer.
Still, she said Target did “as much as could be reasonably expected” in this case. “It's a leaky system to begin with,” she said.
Credit card companies in the U.S. plan to replace magnetic strips with digital chips by the fall of 2015, a system already common in Europe and other countries that makes data theft more difficult.
Minneapolis-based Target Corp. said it is still in the early stages of investigating the breach. It has been working with the Secret Service and the Department of Justice.
Show commenting policy
TribLive commenting policy
You are solely responsible for your comments and by using TribLive.com you agree to our Terms of Service.
We moderate comments. Our goal is to provide substantive commentary for a general readership. By screening submissions, we provide a space where readers can share intelligent and informed commentary that enhances the quality of our news and information.
While most comments will be posted if they are on-topic and not abusive, moderating decisions are subjective. We will make them as carefully and consistently as we can. Because of the volume of reader comments, we cannot review individual moderation decisions with readers.
We value thoughtful comments representing a range of views that make their point quickly and politely. We make an effort to protect discussions from repeated comments either by the same reader or different readers.
We follow the same standards for taste as the daily newspaper. A few things we won't tolerate: personal attacks, obscenity, vulgarity, profanity (including expletives and letters followed by dashes), commercial promotion, impersonations, incoherence, proselytizing and SHOUTING. Don't include URLs to Web sites.
We do not edit comments. They are either approved or deleted. We reserve the right to edit a comment that is quoted or excerpted in an article. In this case, we may fix spelling and punctuation.
We welcome strong opinions and criticism of our work, but we don't want comments to become bogged down with discussions of our policies and we will moderate accordingly.
We appreciate it when readers and people quoted in articles or blog posts point out errors of fact or emphasis and will investigate all assertions. But these suggestions should be sent via e-mail. To avoid distracting other readers, we won't publish comments that suggest a correction. Instead, corrections will be made in a blog post or in an article.
- Consumer, core prices inch up
- Starkey: Century mark beckons for Ben
- Highmark seeks double-digit increase for more benefits, heavy use
- The Leader eager for Kittanning finale
- Pitt offense eyes healthy balance
- Steelers’ defense on pace for fewest sacks in 16-game season
- Canadians more fearful, aware after ‘very rare’ attack in Ottawa
- Flyers continue mastery of Penguins at Consol
- Contempt citation sought by state against Highmark for alleged violation of deal with UPMC
- Apollo-Ridge school bus safety program aims to drive message home
- Three drug arrests in Donora