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Security News, Exploits, and Vulnerabilities.

Skimmers Found at Walmart: A Closer Look

Recent local news stories about credit card skimmers found in self-checkout lanes at some Walmart locations reminds me of a criminal sales pitch I saw recently for overlay skimmers made specifically for the very same card terminals.

Crooks Go Deep With ‘Deep Insert’ Skimmers

ATM maker NCR Corp. says it is seeing a rapid rise in reports of what it calls “deep insert skimmers,” wafer-thin fraud devices made to be hidden inside of the card acceptance slot on a cash machine.

A Dramatic Rise in ATM Skimming Attacks

Skimming attacks on ATMs increased at an alarming rate last year for both American and European banks and their customers, according to recent stats collected by fraud trackers. The trend appears to be continuing into 2016, with outbreaks of skimming activity visiting a much broader swath of the United States than in years past.

Skimmers Hijack ATM Network Cables

If you have ever walked up to an ATM to withdraw cash only to decide against it after noticing a telephone or ethernet cord snaking from behind the machine to a jack in the wall, your paranoia may not have been misplaced: ATM maker NCR is warning about skimming attacks that involve keypad overlays, hidden cameras and skimming devices plugged into the ATM network cables to intercept customer card data.

Safeway Self-Checkout Skimmer Close Up

In Dec. 2015, KrebsOnSecurity warned that security experts had discovered skimming devices attached to credit and debit card terminals at self-checkout lanes at Safeway stores in Colorado and possibly other states. Safeway hasn’t disclosed what those skimmers looked like, but images from a recent skimming attack allegedly launched against self-checkout shoppers at a Safeway in Maryland offers a closer look at once such device.

Skimmers Found at Some Calif., Colo. Safeways

Sources at multiple financial institutions say they are tracking a pattern of fraud indicating that thieves have somehow compromised the credit card terminals at checkout lanes within multiple Safeway stores in California and Colorado. Safeway confirmed it is investigating skimming incidents at several stores.

TalkTalk, Script Kids & The Quest for ‘OG’

So you’ve got two-step authentication set up to harden the security of your email account (you do, right?). But when was the last time you took a good look at the security of your inbox’s recovery email address? That may well be the weakest link in your email security chain, as evidenced by the following tale of a IT professional who saw two of his linked email accounts recently hijacked in a bid to steal his Twitter identity.

Earlier this week, I heard from Chris Blake, a longtime KrebsOnSecurity reader from the United Kingdom. Blake reached out because I’d recently written about a character of interest in the breach at British phone and broadband provider TalkTalk: an individual using the Twitter handle “@Fearful”. Blake proceeded to explain how that same Fearful account had belonged to him for some time until May 2015, when an elaborate social engineering attack on his Internet service provider (ISP) allowed the current occupant of the account to swipe it out from under him.

Who’s Behind Bluetooth Skimming in Mexico?

In the previous two stories, I documented the damage wrought by an organized crime gang in Mexico that has been systematically bribing ATM technicians to install Bluetooth skimming components that allow thieves to steal card and PIN data wirelessly. What follows is a look at a mysterious new ATM company in Mexico that sources say may be tied to the skimming activity.

Tracking Bluetooth Skimmers in Mexico, Part II

I spent four days last week in Mexico, tracking the damage wrought by an organized crime ring that is bribing ATM technicians to place Bluetooth skimmers inside of cash machines in and around the tourist areas of Cancun. Today’s piece chronicles the work of this gang in coastal regions farther south, following a trail of hacked ATMs from Playa Del Camen down to the ancient Mayan ruins in Tulum.

Tracking a Bluetooth Skimmer Gang in Mexico

-Sept. 9, 12:30 p.m. CT, Yucatan Peninsula, Mexico: Halfway down the southbound four-lane highway from Cancun to the ancient ruins in Tulum, traffic inexplicably slowed to a halt. There was some sort of checkpoint ahead by the Mexican Federal Police. I began to wonder whether it was a good idea to have brought along the ATM skimmer instead of leaving it in the hotel safe. If the cops searched my stuff, how could I explain having ultra-sophisticated Bluetooth ATM skimmer components in my backpack?

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