Microsoft Patches Six Zero-Day Security Holes

Microsoft today released another round of security updates for Windows operating systems and supported software, including fixes for six zero-day bugs that malicious hackers already are exploiting in active attacks. June’s Patch Tuesday addresses just 49 security holes — about half the normal number...

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Justice Dept. Claws Back $2.3M Paid by Colonial Pipeline to Ransomware Gang

The U.S. Department of Justice said today it has recovered $2.3 million worth of Bitcoin that Colonial Pipeline paid to ransomware extortionists last month. The funds had been sent to DarkSide, a ransomware-as-a-service syndicate that disbanded after a May 14 farewell message to affiliates saying it...

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Adventures in Contacting the Russian FSB

KrebsOnSecurity recently had occasion to contact the Russian Federal Security Service (FSB), the Russian equivalent of the U.S. Federal Bureau of Investigation (FBI). In the process of doing so, I encountered a small snag: The FSB’s website said in order to communicate with them securely, I needed t...

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Using Fake Reviews to Find Dangerous Extensions

Fake, positive reviews have infiltrated nearly every corner of life online these days, confusing consumers while offering an unwelcome advantage to fraudsters and sub-par products everywhere. Happily, identifying and tracking these fake reviewer accounts is often the easiest way to spot scams. Here’...

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Boss of ATM Skimming Syndicate Arrested in Mexico

Florian “The Shark” Tudor, the alleged ringleader of a prolific ATM skimming gang that siphoned hundreds of millions of dollars from bank accounts of tourists visiting Mexico over the last eight years, was arrested in Mexico City on Thursday in response to an extradition warrant from a Romanian cour...

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How to Tell a Job Offer from an ID Theft Trap

One of the oldest scams around — the fake job interview that seeks only to harvest your personal and financial data — is on the rise, the FBI warns. Here’s the story of a recent LinkedIn impersonation scam that led to more than 100 people getting duped, and one almost-victim who decided the job offe...

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Recycle Your Phone, Sure, But Maybe Not Your Number

Many online services allow users to reset their passwords by clicking a link sent via SMS, and this unfortunately widespread practice has turned mobile phone numbers into de facto identity documents. Which means losing control over one thanks to a divorce, job termination or financial crisis can be ...

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Try This One Weird Trick Russian Hackers Hate

In a Twitter discussion last week on ransomware attacks, KrebsOnSecurity noted that virtually all ransomware strains have a built-in failsafe designed to cover the backsides of the malware purveyors: They simply will not install on a Microsoft Windows computer that already has one of many types of v...

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DarkSide Ransomware Gang Quits After Servers, Bitcoin Stash Seized

The DarkSide ransomware affiliate program responsible for the six-day outage at Colonial Pipeline this week that led to fuel shortages and price spikes across the country is running for the hills. The crime gang announced it was closing up shop after its servers were seized and someone drained the c...

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Microsoft Patch Tuesday, May 2021 Edition

Microsoft today released fixes to plug at least 55 security holes in its Windows operating systems and other software. Four of these weaknesses can be exploited by malware and malcontents to seize complete, remote control over vulnerable systems without any help from users. On deck this month are pa...

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A Closer Look at the DarkSide Ransomware Gang

The FBI confirmed this week that a relatively new ransomware group known as DarkSide is responsible for an attack that caused Colonial Pipeline to shut down 5,550 miles of pipe, stranding countless barrels of gasoline, diesel and jet fuel on the Gulf Coast. Here’s a closer look at the DarkSide cyber...

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Fintech Startup Offers $500 for Payroll Passwords

How much is your payroll data worth? Probably a lot more than you think. One financial startup that’s targeting the gig worker market is offering up to $500 to anyone willing to hand over the payroll account username and password given to them by their employer, plus a regular payment for each month...

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Investment Scammer John Davies Reinvents Himself?

John Bernard, a pseudonym used by a convicted thief and con artist named John Clifton Davies who’s fleeced dozens of technology startups out of an estimated $30 million, appears to have reinvented himself again after being exposed in a recent investigative series published here. Sources tell KrebsOn...

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Malicious Office 365 Apps Are the Ultimate Insiders

Phishers targeting Microsoft Office 365 users increasingly are turning to specialized links that take users to their organization’s own email login page. After a user logs in, the link prompts them to install a malicious but innocuously-named app that gives the attacker persistent, password-free acc...

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The Wages of Password Re-use: Your Money or Your Life

When normal computer users fall into the nasty habit of recycling passwords, the result is most often some type of financial loss. When cybercriminals develop the same habit, it can eventually cost them their freedom. Our passwords can say a lot about us, and much of what they have to say is unflatt...

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Task Force Seeks to Disrupt Ransomware Payments

Some of the world’s top tech firms are backing a new industry task force focused on disrupting cybercriminal ransomware gangs by limiting their ability to get paid, and targeting the individuals and finances of the organized thieves behind these crimes. In a 50-page report delivered to the Biden adm...

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Experian API Exposed Credit Scores of Most Americans

Big-three consumer credit bureau Experian just fixed a weakness with a partner website that let anyone look up the credit score of tens of millions of Americans just by supplying their name and mailing address, KrebsOnSecurity has learned. Experian says it has plugged the data leak, but the research...

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Experian’s Credit Freeze Security is Still a Joke

In 2017, KrebsOnSecurity showed how easy it is for identity thieves to undo a consumer’s request to freeze their credit file at Experian, one of the big three consumer credit bureaus in the United States.  Last week, KrebsOnSecurity heard from a reader who had his freeze thawed without authorization...

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Note to Self: Create Non-Exhaustive List of Competitors

What was the best news you heard so far this month? Mine was learning that KrebsOnSecurity is listed as a restricted competitor by Gartner Inc. [NYSE:IT] — a $4 billion technology goliath whose analyst reports can move markets and shape the IT industry. Earlier this month, a reader pointed my attent...

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Did Someone at the Commerce Dept. Find a SolarWinds Backdoor in Aug. 2020?

On Aug. 13, 2020, someone uploaded a suspected malicious file to VirusTotal, a service that scans submitted files against more than five dozen antivirus and security products. Last month, Microsoft and FireEye identified that file as a newly-discovered fourth malware backdoor used in the sprawling S...

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