Every time there is another data breach, we are asked to change our password at the breached entity. But the reality is that in most cases by the time the victim organization discloses an incident publicly the information has already...

One day after last summer's mass-hack of Twitter, KrebsOnSecurity wrote that 22-year-old British citizen Joseph "PlugwalkJoe" O'Connor appeared to have been involved in the incident. When the Justice Department last week announced O'Connor's arrest and indictment, his alleged role in...

A 18-year-old Tennessee man who helped set in motion a fraudulent distress call to police that lead to the death of a 60-year-old grandfather in 2020 was sentenced to 60 months in prison today.

A federal judge in Connecticut today handed down a sentence of time served to spam kingpin Peter “Severa” Levashov, a prolific purveyor of malicious and junk email, and the creator of malware strains that infected millions of Microsoft computers globally....

Browse the comments on virtually any story about a ransomware attack and you will almost surely encounter the view that the victim organization could have avoided paying their extortionists if only they'd had proper data backups. But the ugly truth...

Microsoft today released updates to patch at least 116 security holes in its Windows operating systems and related software. A half of dozen of the vulnerabilities addressed today are under active attack, according to Microsoft.

Last summer, financial institutions throughout Texas started reporting a sudden increase in attacks involving well-orchestrated teams that would show up at night, use stolen trucks and heavy chains to rip Automated Teller Machines (ATMs) out of their foundations, and make...

Last week cybercriminals deployed ransomware to 1,500 organizations that provide IT security and technical support to many other companies. The attackers exploited a vulnerability in software from Kaseya, a Miami-based company whose products help system administrators manage large networks remotely....

Microsoft on Tuesday issued an emergency software update to quash a security bug that's been dubbed "PrintNightmare," a critical vulnerability in all supported versions of Windows that is actively being exploited. The fix comes a week ahead of Microsoft's normal...

Countless Western Digital customers saw their MyBook Live network storage drives remotely wiped in the past month thanks to a bug in a product line the company stopped supporting in 2015, as well as a previously unknown zero-day flaw. But...

Financial services giant Intuit this week informed 1.4 million small businesses using its QuickBooks Online Payroll and Intuit Online Payroll products that their payroll information will be shared with big-three consumer credit bureau Equifax starting later this year unless customers...

Imagine waking up each morning knowing the identities of thousands of people who are about to be mugged for thousands of dollars each. You know exactly when and where each of those muggings will take place, and you've shared this...

Hard drive giant Western Digital is urging users of its MyBook Live brand of network storage drives to disconnect them from the Internet, warning that malicious hackers are remotely wiping the drives using a previously unknown critical flaw that can...

In 2015, police departments worldwide started finding ATMs compromised with advanced new "shimming" devices made to clone data from chip card transactions. Authorities in the United States and abroad had seized many of these shimmers, but for years couldn't decrypt...

Amid multiple recent reports of hackers breaking into and tampering with drinking water treatment systems comes a new industry survey with some sobering findings: A majority of the 52,000 separate drinking water systems in the United States still haven't inventoried...

In May 2019, KrebsOnSecurity broke the news that the website of mortgage settlement giant First American Financial Corp. [NYSE:FAF] was leaking more than 800 million documents -- many containing sensitive financial data -- related to real estate transactions dating back...

Authorities in Ukraine this week charged six people alleged to have been part of the CLOP ransomware group, a cybercriminal gang said to have extorted more than half a billion dollars from victims. Some of CLOP's victims this year alone include...

The U.S. Department of Justice (DOJ) last week announced the arrest of a 55-year-old Latvian woman who’s alleged to have worked as a programmer for Trickbot, a malware-as-a-service platform responsible for infecting millions of computers and seeding many of those...

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.

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...

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...

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...

Florian "The Shark" Tudor, the alleged ringleader of a prolific ATM skimming gang that has stolen hundreds of millions from tourists visiting Mexico over the past eight years, was arrested in Mexico City on Thursday in response to an extradition...

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...

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...

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...

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...

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...

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...

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...