There is a terrifying and highly effective “method” that criminal hackers are now using to harvest sensitive customer data from Internet service providers, phone companies and social media firms. It involves compromising email accounts and websites tied to police departments and government agencies, and then sending unauthorized demands for …

An Estonian man was sentenced today to more than five years in a U.S. prison for his role in at least 13 ransomware attacks that caused losses of approximately $53 million. Prosecutors say the accused also enjoyed a lengthy career of “cashing out” access to hacked bank accounts …

Microsoft and identity management platform Okta both this week disclosed breaches involving LAPSUS$, a relatively new cybercrime group that specializes in stealing data from big companies and threatening to publish it unless a ransom demand is paid. Here’s a closer look at LAPSUS$, and some of the low-tech …

Pavel Vrublevsky, founder of the Russian payment technology firm ChronoPay and the antagonist in my 2014 book “ Spam Nation,” was arrested in Moscow this month and charged with fraud. Russian authorities allege Vrublevsky operated several fraudulent SMS-based payment schemes, and facilitated money laundering for Hydra, the largest Russian darknet …

Aleksei Burkov, seated second from right, attends a hearing in Jerusalem in 2015. Image: Andrei Shirokov / Tass via Getty Images. Aleksei Burkov, a cybercriminal who long operated two of Russia’s most exclusive underground hacking forums, was arrested in 2015 by Israeli authorities. The Russian government fought Burkov’s …

Three stories here last week pored over several years’ worth of internal chat records stolen from the Conti ransomware group, the most profitable ransomware gang in operation today. The candid messages revealed how Conti evaded law enforcement and intelligence agencies, what it was like on a typical day at …

Part I of this series examined newly-leaked internal chats from the Conti ransomware group, and how the crime gang dealt with its own internal breaches. Part II explored what it’s like to be an employee of Conti’s sprawling organization. Today’s Part III looks at how Conti …

Earlier this week, a Ukrainian security researcher leaked almost two years’ worth of internal chat logs from Conti, one of the more rapacious and ruthless ransomware gangs in operation today. Tuesday’s story examined how Conti dealt with its own internal breaches and attacks from private security firms and …

A Ukrainian security researcher this week leaked several years of internal chat logs and other sensitive data tied to Conti, an aggressive and ruthless Russian cybercrime group that focuses on deploying its ransomware to companies with more than $100 million in annual revenue. The chat logs offer a fascinating …

A network intrusion at the International Committee for the Red Cross (ICRC) in January led to the theft of personal information on more than 500,000 people receiving assistance from the group. KrebsOnSecurity has learned that the email address used by a cybercriminal actor who offered to sell the …

In January, KrebsOnSecurity examined clues left behind by “ Wazawaka,” the hacker handle chosen by a major ransomware criminal in the Russian-speaking cybercrime scene. Wazawaka has since “lost his mind” according to his erstwhile colleagues, creating a Twitter account to drop exploit code for a widely-used virtual private networking (VPN …

Russian authorities have arrested six men accused of operating some of the most active online bazaars for selling stolen payment card data. The crackdown — the second closure of major card fraud shops by Russian authorities in as many weeks — comes closely behind Russia’s arrest of 14 alleged affiliates …

Several articles here have delved into the history of John Bernard, the pseudonym used by a fake billionaire technology investor who tricked dozens of startups into giving him tens of millions of dollars. Bernard’s latest victim — a Norwegian company hoping to build a fleet of environmentally friendly shipping …

In December 2021, researchers discovered a new ransomware-as-a-service named ALPHV (a.k.a. “ BlackCat “), considered to be the first professional cybercrime group to create and use a ransomware strain written in the Rust programming language. In this post, we’ll explore some of the clues left behind by a …

Up for the “Most Meta Cybercrime Offering” award this year is Accountz Club, a new cybercrime store that sells access to purloined accounts at services built for cybercriminals, including shops peddling stolen payment cards and identities, spamming tools, email and phone bombing services, and those selling authentication cookies for …

The Russian government said today it arrested 14 people accused of working for “ REvil,” a particularly aggressive ransomware group that has extorted hundreds of millions of dollars from victim organizations. The Russian Federal Security Service (FSB) said the actions were taken in response to a request from U.S …

In a great many ransomware attacks, the criminals who pillage the victim’s network are not the same crooks who gained the initial access to the victim organization. More commonly, the infected PC or stolen VPN credentials the gang used to break in were purchased from a cybercriminal middleman …

A 24-year-old New York man who bragged about helping to steal more than $20 million worth of cryptocurrency from a technology executive has pleaded guilty to conspiracy to commit wire fraud. Nicholas Truglia was part of a group alleged to have stolen more than $100 million from cryptocurrency investors …

A 31-year-old Canadian man has been arrested and charged with fraud in connection with numerous ransomware attacks against businesses, government agencies and private citizens throughout Canada and the United States. Canadian authorities describe him as “the most prolific cybercriminal we’ve identified in Canada,” but so far they’ve …

Rarely do cybercriminal gangs that deploy ransomware gain the initial access to the target themselves. More commonly, that access is purchased from a cybercriminal broker who specializes in acquiring remote access credentials — such as usernames and passwords needed to remotely connect to the target’s network. In this post …

In August, KrebsOnSecurity warned that scammers were contacting people and asking them to unleash ransomware inside their employer’s network, in exchange for a percentage of any ransom amount paid by the victim company. This week, authorities in Nigeria arrested a suspect in connection with the scheme — a young …

The CEO of a South Carolina technology firm has pleaded guilty to 20 counts of wire fraud in connection with an elaborate network of phony companies set up to obtain more than 735,000 Internet Protocol (IP) addresses from the nonprofit organization that leases the digital real estate to …

The Federal Bureau of Investigation (FBI) confirmed today that its fbi.gov domain name and Internet address were used to blast out thousands of fake emails about a cybercrime investigation. According to an interview with the person who claimed responsibility for the hoax, the spam messages were sent by …

The U.S. Department of Justice today announced the arrest of Ukrainian man accused of deploying ransomware on behalf of the REvil ransomware gang, a Russian-speaking cybercriminal collective that has extorted hundreds of millions from victim organizations. The DOJ also said it had seized $6.1 million in cryptocurrency …

A number of publications in September warned about the emergence of “ Groove,” a new ransomware group that called on competing extortion gangs to unite in attacking U.S. government interests online. It now appears that Groove was all a big hoax designed to toy with security firms and journalists …