The U.S. government this week put a $10 million bounty on the head of a Russian man who for the past 18 years operated Try2Check, one of the cybercrime underground’s most trusted services for checking the validity of stolen credit card data. U.S. authorities say 43-year-old Denis Kulkov’s card-checking service made him at least $18 million, which he used to buy a Ferrari, Land Rover, and other luxury items.
Joker’s Stash, by some accounts the largest underground shop for selling stolen credit card and identity data, says it’s closing up shop effective mid-February 2021. The announcement came on the heels of a turbulent year for the major cybercrime store, and just weeks after U.S. and European authorities seized a number of its servers.
In late December 2019, fuel and convenience store chain Wawa Inc. said a nine-month-long breach of its payment card processing systems may have led to the theft of card data from customers who visited any of its 850 locations nationwide. Now, fraud experts say the first batch of card data stolen from Wawa customers is being sold at one of the underground’s most popular crime shops, which claims to have 30 million records to peddle from a new nationwide breach.
On Nov. 23, one of the cybercrime underground’s largest bazaars for buying and selling stolen payment card data announced the immediate availability of some four million freshly-hacked debit and credit cards. KrebsOnSecurity has learned this latest batch of cards was siphoned from four different compromised restaurant chains that are most prevalent across the midwest and eastern United States.
On Tuesday of this week, one of the more popular underground stores peddling credit and debit card data stolen from hacked merchants announced a blockbuster new sale: More than 5.3 million new accounts belonging to cardholders from 35 U.S. states. Multiple sources now tell KrebsOnSecurity that the card data came from compromised gas pumps, coffee shops and restaurants operated by Hy-Vee, an Iowa-based company that operates a chain of more than 245 supermarkets throughout the Midwestern United States.
On Feb. 21, 2019, KrebsOnSecurity contacted Italian restaurant chain Buca di Beppo after discovering strong evidence that two million credit and debit card numbers belonging to the company’s customers were being sold in the cybercrime underground. Today, Buca’s parent firm announced it had remediated a 10-month breach of its payment systems at dozens of restaurants, including some locations of its other brands such as Earl of Sandwich and Planet Hollywood.
Dec. 18 marked the fourth anniversary of this site breaking the news about a breach at Target involving some 40 million customer credit and debit cards. It has been fascinating in the years since that epic intrusion to see how organized cyber thieves have shifted from targeting big box retailers to hacking a broad swath of small to mid-sized merchants that accept credit cards.
Sonic Drive-In, a fast-food chain with nearly 3,600 locations across 45 U.S. states, has acknowledged a breach affecting an unknown number of store payment card systems. The ongoing breach may have led to a fire sale on millions of stolen credit and debit card accounts that are now being peddled in shadowy underground cybercrime stores, KrebsOnSecurity has learned.
A steady stream of card breaches at retailers, restaurants and hotels has flooded underground markets with a historic glut of stolen debit and credit card data. Today there are at least hundreds of sites online selling stolen account data, yet only a handful of them actively court bulk buyers and organized crime rings. Faced with a buyer’s market, these elite shops set themselves apart by focusing on loyalty programs, frequent-buyer discounts, money-back guarantees and just plain old good customer service.
