Some of the most convincing email phishing and malware attacks come disguised as nastygrams from a law firm. Such scams typically notify the recipient that he/she is being sued, and instruct them to review the attached file and respond within...

Ogusers[.]com -- a forum popular among people involved in hijacking online accounts and conducting SIM swapping attacks to seize control over victims' phone numbers -- has itself been hacked, exposing the email addresses, hashed passwords, IP addresses and private messages...

Law enforcement agencies in the United States and Europe today unsealed charges against 11 alleged members of the GozNym malware network, an international cybercriminal syndicate suspected of stealing $100 million from more than 41,000 victims with the help of a...

In the early days of the Internet, there was a period when Internet Protocol 4 (IPv4) addresses (e.g. 4.4.4.4) were given out like cotton candy to anyone who asked. But these days companies are queuing up to obtain new IP...

Microsoft today is taking the unusual step of releasing security updates for unsupported but still widely-used Windows operating systems like XP and Windows 2003, citing the discovery of a "wormable" flaw that the company says could be used to fuel...

Eight Americans and an Irishman have been charged with wire fraud this week for allegedly hijacking mobile phones through SIM-swapping, a form of fraud in which scammers bribe or trick employees at mobile phone stores into seizing control of the...

Early in the afternoon on Friday, May, 3, I asked a friend to relay a message to his security contact at CCH, the cloud-based tax division of the global information services firm Wolters Kluwer in the Netherlands. The message was that...

Federal investigators in the United States, Germany and the Netherlands announced today the arrest and charging of three German nationals and a Brazilian man as the alleged masterminds behind the Wall Street Market (WSM), one of the world's largest dark web...

A Pennsylvania credit union is suing financial industry technology giant Fiserv, alleging that "baffling" security vulnerabilities in the company's software are "wreaking havoc" on its customers. The credit union said the investigation that fueled the lawsuit was prompted by a...

For many years and until quite recently, credit card data stolen from online merchants has been worth far less in the cybercrime underground than cards pilfered from hacked brick-and-mortar stores. But new data suggests that over the past year, the...

A peer-to-peer (P2P) communications technology built into millions of security cameras and other consumer electronics includes several critical security flaws that expose the devices to eavesdropping, credential theft and remote compromise, new research has found.

The owner of a Swedish company behind a popular remote administration tool (RAT) implicated in thousands of malware attacks shares the same name as a Swedish man who pleaded guilty in 2015 to co-creating the Blackshades RAT, a similar product that...

Marcus Hutchins, a 24-year-old blogger and malware researcher arrested in 2017 for allegedly authoring and selling malware designed to steal online banking credentials, has pleaded guilty to criminal charges of conspiracy and to making, selling or advertising illegal wiretapping devices.

The criminals responsible for launching phishing campaigns that netted dozens of employees and more than 100 computer systems last month at Wipro, India's third-largest IT outsourcing firm, also appear to have targeted a number of other competing providers, including Infosys...

I'm not a huge fan of stories about stories, or those that explore the ins and outs of reporting a breach. But occasionally it seems necessary to publish such accounts when companies respond to a breach report in such a...

Indian information technology (IT) outsourcing and consulting giant Wipro [NYSE:WIT] is investigating reports from multiple security experts that Wipro's systems have been hacked and are being used to launch attacks against the company's customers, multiple sources tell KrebsOnSecurity. The company...

Scammers who make a living swindling Airbnb.com customers have a powerful new tool at their disposal: A software-as-a-service offering called "Land Lordz," which helps automate the creation and management of fake Airbnb Web sites and the sending of messages to advertise...

Google this week made it easier for Android users to enable strong 2-factor authentication (2FA) when logging into Google's various services. The company announced that all phones running Android 7.0 and higher can now be used as Security Keys, an...

Microsoft today released fifteen software updates to fix more than 70 unique security vulnerabilities in various flavors of its Windows operating systems and supported software, including at least two zero-day bugs. These patches apply to Windows, Internet Explorer (IE) and Edge...

Almost exactly one year ago, KrebsOnSecurity reported that a mere two hours of searching turned up more than 100 Facebook groups with some 300,000 members openly advertising services to support all types of cybercrime, including spam, credit card fraud and...

An alleged top boss of a Romanian crime syndicate that U.S. authorities say is responsible for deploying card-skimming devices at Automated Teller Machines (ATMs) throughout North America was arrested in Mexico last week on firearms charges. The arrest comes months...

Canadian police last week raided the residence of a Toronto software developer responsible for authoring and selling “Orcus RAT,” a software product that’s been marketed on underground forums and used in countless malware attacks since its creation in 2015. Its...

For the second year in a row, denizens of a large German-language online forum have donated more than USD $250,000 to cancer research organizations in protest of a story KrebsOnSecurity published in 2018 that unmasked the creators of Coinhive, a...

Tyler Barriss, a 26-year-old California man who admitted making a phony emergency call to police in late 2017 that led to the shooting death of an innocent Kansas resident, has been sentenced to 20 years in federal prison.

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...

In 2013, the FBI exploited a zero-day vulnerability in Firefox to seize control over a Dark Web network of child pornography sites. The alleged owner of that ring - 33-year-old Freedom Hosting operator Eric Eoin Marques - was arrested in Ireland...

Hundreds of millions of Facebook users had their account passwords stored in plain text and searchable by thousands of Facebook employees -- in some cases going back to 2012, KrebsOnSecurity has learned. Facebook says an ongoing investigation has so far...

Phone numbers stink for security and authentication. They stink because most of us have so much invested in these digits that they've become de facto identities. At the same time, when you lose control over a phone number -- maybe...

Online advertising firm Sizmek Inc. [NASDAQ: SZMK] says it is investigating a security incident in which a hacker was reselling access to a user account with the ability to modify ads and analytics for a number of big-name advertisers. In a...

Microsoft on Tuesday pushed out software updates to fix more than five dozen security vulnerabilities in its Windows operating systems, Internet Explorer, Edge, Office and Sharepoint. If you (ab)use Microsoft products, it's time once again to start thinking about getting...