Category Archives: All About Skimmers

Spike in “Chain Gang” Destructive Attacks on ATMs

July 9, 2021

Last summer, financial institutions throughout Texas started reporting a sudden increase in attacks involving well-orchestrated teams that would show up at night, use stolen trucks and heavy chains to rip Automated Teller Machines (ATMs) out of their foundations, and make off with the cash boxes inside. Now it appears the crime — known variously as “ATM smash-and-grab” and “chain gang” attacks — is rapidly increasing in other states.

How Cyber Sleuths Cracked an ATM Shimmer Gang

June 23, 2021

In 2015, police departments worldwide started finding ATMs compromised with advanced new “shimming” devices made to clone data from chip card transactions. Authorities in the United States and abroad had seized many of these shimmers, but for years couldn’t decrypt the data on the devices. This is a story of ingenuity and happenstance, and how one former Secret Service agent helped crack a code that revealed the contours of a global organized crime ring.

Boss of ATM Skimming Syndicate Arrested in Mexico

May 28, 2021

Florian “The Shark” Tudor, the alleged ringleader of a prolific ATM skimming gang that has stolen hundreds of millions from tourists visiting Mexico over the past eight years, was arrested in Mexico City on Thursday in response to an extradition warrant from a Romanian court.

Checkout Skimmers Powered by Chip Cards

February 23, 2021

Easily the most sophisticated skimming devices made for hacking terminals at retail self-checkout lanes are a new breed of PIN pad overlay combined with a flexible, paper-thin device that fits inside the terminal’s chip reader slot. What enables these skimmers to be so slim? They draw their power from the low-voltage current that gets triggered when a chip-based card is inserted. As a result, they do not require external batteries, and can remain in operation indefinitely.

Mexican Politician Removed Over Alleged Ties to Romanian ATM Skimmer Gang

February 19, 2021

The leader of Mexico’s Green Party has been removed from office following allegations that he received money from a Romanian ATM skimmer gang that stole hundreds of millions of dollars from tourists visiting Mexico’s top tourist destinations over the past five years. The scandal is the latest fallout stemming from a three-part investigation into the organized crime group by KrebsOnSecurity in 2015.

Bluetooth Overlay Skimmer That Blocks Chip

February 15, 2021

As a total sucker for anything skimming-related, I was interested to hear from a reader working security for a retail chain in the United States that recently found bluetooth-enabled skimming devices placed over top of payment card terminals at several stores. Interestingly, these skimmers interfered with the terminal’s ability to read chip-based cards, forcing customers to swipe the stripe instead.

Is Your Chip Card Secure? Much Depends on Where You Bank

July 30, 2020

Chip-based credit and debit cards are designed to make it infeasible for skimming devices or malware to clone your card when you pay for something by dipping the chip instead of swiping the stripe. But a recent series of malware attacks on U.S.-based merchants suggest thieves are exploiting weaknesses in how certain financial institutions have implemented the technology to sidestep key chip card security features and effectively create usable, counterfeit cards.

Romanian Skimmer Gang in Mexico Outed by KrebsOnSecurity Stole $1.2 Billion

June 3, 2020

An exhaustive inquiry published today by a consortium of investigative journalists says a three-part series KrebsOnSecurity published in 2015 on a Romanian ATM skimming gang operating in Mexico’s top tourist destinations disrupted their highly profitable business, which raked in an estimated $20 million a month and enjoyed the protection of top Mexican authorities.

Report: ATM Skimmer Gang Had Protection from Mexican Attorney General’s Office

May 26, 2020

A group of Romanians operating an ATM company in Mexico and suspected of bribing technicians to install sophisticated Bluetooth-based skimmers in cash machines throughout several top Mexican tourist destinations have enjoyed legal protection from a top anti-corruption official in the Mexican attorney general’s office, according to a new complaint filed with the government’s internal affairs division.

Hidden Cam Above Bluetooth Pump Skimmer

November 25, 2019

Tiny hidden spy cameras are a common sight at ATMs that have been tampered with by crooks who specialize in retrofitting the machines with card skimmers. But until this past week I’d never heard of hidden cameras being used at gas pumps in tandem with Bluetooth-based card skimming devices.

Apparently, I’m not alone.

“I believe this is the first time I’ve seen a camera on a gas pump with a Bluetooth card skimmer,” said Detective Matt Jogodka of the Las Vegas Police Department, referring to the compromised fuel pump pictured below.

Apparently, I’m not alone.

“I believe this is the first time I’ve seen a camera on a gas pump with a Bluetooth card skimmer,” said Detective Matt Jogodka of the Las Vegas Police Department, referring to the compromised fuel pump pictured below.