Salesforce says it’s refusing to pay an extortion demand made by a crime syndicate that claims to have stolen roughly 1 billion records from dozens of Salesforce customers. The threat group making the demands began their campaign in May, when they made voice calls to organizations storing data …

A cybercriminal group that used voice phishing attacks to siphon more than a billion records from Salesforce customers earlier this year has launched a website that threatens to publish data stolen from dozens of Fortune 500 firms if they refuse to pay a ransom. The group also claimed responsibility …

U.S. prosecutors last week levied criminal hacking charges against 19-year-old U.K. national Thalha Jubair for allegedly being a core member of Scattered Spider, a prolific cybercrime group blamed for extorting at least $115 million in ransom payments from victims. The charges came as Jubair and an alleged …

Federal prosecutors charged a UK teenager with conspiracy to commit computer fraud and other crimes in connection with the network intrusions of 47 US companies that generated more than $115 million in ransomware payments over a three-year span. A criminal complaint unsealed on Thursday (PDF) said that Thalha Jubair …

Last week, a prominent US senator called on the Federal Trade Commission to investigate Microsoft for cybersecurity negligence over the role it played last year in health giant Ascension's ransomware breach, which caused life-threatening disruptions at 140 hospitals and put the medical records of 5.6 million patients into …

Senator Ron Wyden has asked the Federal Trade Commission to investigate Microsoft over its continued use of the RC4 encryption algorithm. The letter talks about a hacker technique called Kerberoasting, that exploits the Kerberos authentication system. [...]

A prominent US senator has called on the Federal Trade Commission to investigate Microsoft for “gross cybersecurity negligence,” citing the company’s continued use of an obsolete and vulnerable form of encryption that Windows uses by default. In a letter to FTC Chairman Andrew Ferguson, Sen. Ron Wyden (D …

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 …

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 …

Hot on the heels of a major ransomware group being taken down through an international law enforcement operation comes a new development that highlights the whack-a-mole nature of such actions: A new group, likely comprised of some of the same members, has already taken its place. The new group …

Authorities in Europe have detained five people, including a former Russian professional basketball player, in connection with crime syndicates responsible for ransomware attacks. Until recently, one of the suspects, Daniil Kasatkin, played for MBA Moscow, a basketball team that’s part of the VTB United League, which includes teams …

Authorities in the United Kingdom this week arrested four people aged 17 to 20 in connection with recent data theft and extortion attacks against the retailers Marks & Spencer and Harrods, and the British food retailer Co-op Group. The breaches have been linked to a prolific but loosely-affiliated cybercrime group …

A new Australian law requires larger companies to declare any ransomware payments they have made. [...]

For years, members of the Russian cybercrime cartel Trickbot unleashed a relentless hacking spree on the world. The group attacked thousands of victims, including businesses, schools, and hospitals. “Fuck clinics in the usa this week,” one member wrote in internal Trickbot messages in 2020 about a list of 428 …

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 …

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 …

A leak of 190,000 chat messages traded among members of the Black Basta ransomware group shows that it’s a highly structured and mostly efficient organization staffed by personnel with expertise in various specialities, including exploit development, infrastructure optimization, social engineering, and more. The trove of records was …

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 …

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. Security experts say the Russia-based service provider Prospero OOO (the triple O is the Russian version …

More than a year’s worth of internal communications from one of the world’s most active ransomware syndicates have been published online in a leak that exposes tactics, trade secrets, and internal rifts of its members. The communications come in the form of logs of more than 200 …

In December, roughly a dozen employees inside a manufacturing company received a tsunami of phishing messages that was so big they were unable to perform their day-to-day functions. A little over an hour later, the people behind the email flood had burrowed into the nether reaches of the company's …

For much of the past year, the trail of destruction and mayhem left behind by ransomware hackers was on full display. Digital extortion gangs paralyzed hundreds of US pharmacies and clinics through their attack on Change Healthcare, exploited security vulnerabilities in the customer accounts of cloud provider Snowflake to …

Jen Easterly is out as the Director of CISA. Read her final interview : There’s a lot of unfinished business. We have made an impact through our ransomware vulnerability warning pilot and our pre-ransomware notification initiative, and I’m really proud of that, because we work on preventing somebody …

At Amazon Web Services (AWS), the security of our customers’ data is our top priority, and it always will be. Recently, the AWS Customer Incident Response Team (CIRT) and our automated security monitoring systems identified an increase in unusual encryption activity associated with Amazon Simple Storage Service (Amazon S3 …