Category Archives: Ransomware

KrebsOnSecurity in New ‘Most Wanted’ HBO Max Series

August 8, 2025

A new documentary series about cybercrime airing next month on HBO Max features interviews with Yours Truly. The four-part series follows the exploits of Julius Kivimäki, a prolific Finnish hacker recently convicted of leaking tens of thousands of patient records from an online psychotherapy practice while attempting to extort the clinic and its patients.

Who Got Arrested in the Raid on the XSS Crime Forum?

August 6, 2025

On July 22, 2025, the European police agency Europol said a long-running investigation led by the French Police resulted in the arrest of a 38-year-old administrator of XSS, a Russian-language cybercrime forum with more than 50,000 members. The action has triggered an ongoing frenzy of speculation and panic among XSS denizens about the identity of the unnamed suspect, but the consensus is that he is a pivotal figure in the crime forum scene who goes by the hacker handle “Toha.” Here’s a deep dive on what’s knowable about Toha, and a short stab at who got nabbed.

UK Arrests Four in ‘Scattered Spider’ Ransom Group

July 10, 2025

Authorities in the United Kingdom this week arrested four alleged members of “Scattered Spider,” a prolific data theft and extortion group whose recent victims include multiple airlines and the U.K. retail chain Marks & Spencer.

Alleged ‘Scattered Spider’ Member Extradited to U.S.

April 30, 2025

A 23-year-old Scottish man thought to be a member of the prolific Scattered Spider cybercrime group was extradited last week from Spain to the United States, where he is facing charges of wire fraud, conspiracy and identity theft. U.S. prosecutors allege Tyler Robert Buchanan and co-conspirators hacked into dozens of companies in the United States and abroad, and that he personally controlled more than $26 million stolen from victims.

Alleged Co-Founder of Garantex Arrested in India

March 11, 2025

Authorities in India today arrested the alleged co-founder of Garantex, a cryptocurrency exchange sanctioned by the U.S. government in 2022 for facilitating tens of billions of dollars in money laundering by transnational criminal and cybercriminal organizations. Sources close to the investigation told KrebsOnSecurity the Lithuanian national Aleksej Besciokov, 46, was apprehended while vacationing on the coast of India with his family.

Notorious Malware, Spam Host “Prospero” Moves to Kaspersky Lab

February 28, 2025

One of the most notorious providers of abuse-friendly “bulletproof” web hosting for cybercriminals has started routing its operations through networks run by the Russian antivirus and security firm Kaspersky Lab, KrebsOnSecurity has learned.

Hacker in Snowflake Extortions May Be a U.S. Soldier

November 26, 2024

Two men have been arrested for allegedly stealing data from and extorting dozens of companies that used the cloud data storage company Snowflake, but a third suspect — a prolific hacker known as Kiberphant0m — remains at large and continues to publicly extort victims. However, this person’s identity may not remain a secret for long: A careful review of Kiberphant0m’s daily chats across multiple cybercrime personas suggests they are a U.S. Army soldier who is or was recently stationed in South Korea.

Low-Drama ‘Dark Angels’ Reap Record Ransoms

August 5, 2024

A ransomware group called Dark Angels made headlines this past week when it was revealed the crime group recently received a record $75 million data ransom payment from a Fortune 50 company. Security experts say the Dark Angels have been around since 2021, but the group doesn’t get much press because they work alone and maintain a low profile, picking one target at a time and favoring mass data theft over disrupting the victim’s operations.

U.S. Trades Cybercriminals to Russia in Prisoner Swap

August 1, 2024

Twenty-four prisoners were freed today in an international prisoner swap between Russia and Western countries. Among the eight Russians repatriated were five convicted cybercriminals. In return, Russia has reportedly released 16 prisoners, including Wall Street Journal reporter Evan Gershkovich and ex-U.S. Marine Paul Whelan.

The Stark Truth Behind the Resurgence of Russia’s Fin7

July 10, 2024

The Russia-based cybercrime group dubbed “Fin7,” known for phishing and malware attacks that have cost victim organizations an estimated $3 billion in losses since 2013, was declared dead last year by U.S. authorities. But experts say Fin7 has roared back to life in 2024 — setting up thousands of websites mimicking a range of media and technology companies — with the help of Stark Industries Solutions, a sprawling hosting provider is a persistent source of cyberattacks against enemies of Russia.