Hackers Were Inside Citrix for Five Months

Networking software giant Citrix Systems says malicious hackers were inside its networks for five months between 2018 and 2019, making off with personal and financial data on company employees, contractors, interns, job candidates and their dependents. The disclosure comes almost a year after...

Meet the World’s Biggest ‘Bulletproof’ Hoster

For at least the past decade, a computer crook variously known as "Yalishanda," "Downlow" and "Stasvl" has run one of the most popular "bulletproof" Web hosting services catering to a vast array of phishing sites, cybercrime forums and malware download servers. What follows are a series of clues...

Deleted Facebook Cybercrime Groups Had 300,000 Members

Hours after being alerted by KrebsOnSecurity, Facebook last week deleted almost 120 private discussion groups totaling more than 300,000 members who flagrantly promoted a host of illicit activities on the social media network's platform. The scam groups facilitated a broad spectrum of shady...

Microsoft’s Jan. 2018 Patch Tuesday Lowdown

Microsoft on Tuesday released 14 security updates, including fixes for the Spectre and Meltdown flaws detailed last week, as well as a zero-day vulnerability in Microsoft Office that is being exploited in the wild. Separately, Adobe pushed a security update to its Flash Player software. Last week...

Microsoft: Chinese Cyberspies Used 4 Exchange Server Flaws to Plunder Emails

Microsoft Corp. today released software updates to plug four security holes that attackers have been using to plunder email communications at companies that use its Exchange Server products. The company says all four flaws are being actively exploited as part of a complex attack chain deployed by...

Microsoft Patch Tuesday, March 2020 Edition

Microsoft Corp. today released updates to plug more than 100 security holes in its various Windows operating systems and associated software. If you abuse Windows, please take a moment to read this post, backup your systems, and patch your PCs. All told, this patch batch addresses at least 115...

Equifax Hackers Stole 200k Credit Card Accounts in One Fell Swoop

Visa and MasterCard are sending confidential alerts to financial institutions across the United States this week, warning them about more than 200,000 credit cards that were stolen in the epic data breach announced last week at big-three credit bureau Equifax. At first glance, the private notices...

Breach at Cloud Solution Provider PCM Inc.

A digital intrusion at PCM Inc., a major U.S.-based cloud solution provider, allowed hackers to access email and file sharing systems for some of the company's clients, KrebsOnSecurity has learned. El Segundo, Calif. based PCM NASDAQ:PCMI is a provider of technology products, services and solutio...

Serial Swatter Who Caused Death Gets Five Years in Prison

A 18-year-old Tennessee man who helped set in motion a fraudulent distress call to police that led to the death of a 60-year-old grandfather in 2020 was sentenced to 60 months in prison today. 60-year-old Mark Herring died of a heart attack after police surrounded his home in response to a swatti...

Why So Many Top Hackers Hail from Russia

Conventional wisdom says one reason so many hackers seem to hail from Russia and parts of the former Soviet Union is that these countries have traditionally placed a much greater emphasis than educational institutions in the West on teaching information technology in middle and high schools, and...

Microsoft Patch Tuesday, January 2021 Edition

Microsoft today released updates to plug more than 80 security holes in its Windows operating systems and other software, including one that is actively being exploited and another which was disclosed prior to today. Ten of the flaws earned Microsofts most-dire "critical" rating, meaning they cou...

Microsoft Patch Tuesday, July 2021 Edition

Microsoft today released updates to patch at least 116 security holes in its Windows operating systems and related software. At least four of the vulnerabilities addressed today are under active attack, according to Microsoft. Thirteen of the security bugs quashed in this months release earned...

Patch Tuesday, December 2019 Edition

Microsoft today released updates to plug three dozen security holes in its Windows operating system and other software. The patches include fixes for seven critical bugs — those that can be exploited by malware or miscreants to take control over a Windows system with no help from users -- as well...

Microsoft Patch Tuesday, November 2021 Edition

Microsoft Corp. today released updates to quash at least 55 security bugs in its Windows operating systems and other software. Two of the patches address vulnerabilities that are already being used in active attacks online, and four of the flaws were disclosed publicly before today -- potentially...

Bomb Threat, Sextortion Spammers Abused Weakness at GoDaddy.com

Two of the most disruptive and widely-received spam email campaigns over the past few months -- including an ongoing sextortion email scam and a bomb threat hoax that shut down dozens of schools, businesses and government buildings late last year -- were made possible thanks to an authentication...

Microsoft Patch Tuesday, May 2022 Edition

Microsoft today released updates to fix at least 74 separate security problems in its Windows operating systems and related software. This months patch batch includes fixes for seven "critical" flaws, as well as a zero-day vulnerability that affects all supported versions of Windows. By all...

German Cops Raid “Cyberbunker 2.0,” Arrest 7 in Child Porn, Dark Web Market Sting

German authorities said Friday they'd arrested seven people and were investigating six more in connection with the raid of a Dark Web hosting operation that allegedly supported multiple child porn, cybercrime and drug markets with hundreds of servers buried inside a heavily fortified military...

Meet the Administrators of the RSOCKS Proxy Botnet

Authorities in the United States, Germany, the Netherlands and the U.K. last week said they dismantled the "RSOCKS" botnet, a collection of millions of hacked devices that were sold as "proxies" to cybercriminals looking for ways to route their malicious traffic through someone elses computer...

Patch Tuesday, June 2024 “Recall” Edition

Microsoft today released updates to fix more than 50 security vulnerabilities in Windows and related software, a relatively light Patch Tuesday this month for Windows users. The software giant also responded to a torrent of negative feedback on a new feature of Redmonds flagship operating system...

Microsoft Patch Tuesday, Sept. 2020 Edition

Microsoft today released updates to remedy nearly 130 security vulnerabilities in its Windows operating system and supported software. None of the flaws are known to be currently under active exploitation, but 23 of them could be exploited by malware or malcontents to seize complete control of...

Patch Tuesday, December 2018 Edition

Adobe and Microsoft each released updates today to tackle critical security weaknesses in their software. Microsoft's December patch batch is relatively light, addressing more than three dozen vulnerabilities in Windows and related applications. Adobe has issued security fixes for its Acrobat and...

From Cybercrime Saul Goodman to the Russian GRU

In 2021, the exclusive Russian cybercrime forum Mazafaka was hacked. The leaked user database shows one of the forums founders was an attorney who advised Russias top hackers on the legal risks of their work, and what to do if they got caught. A review of this users hacker identities shows that...

Microsoft Patch Tuesday, August 2020 Edition

Microsoft today released updates to plug at least 120 security holes in its Windows operating systems and supported software, including two newly discovered vulnerabilities that are actively being exploited. Yes, good people of the Windows world, its time once again to backup and patch up! At lea...

Microsoft Patches ‘Wormable’ Flaw in Windows XP, 7 and Windows 2003

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 a fast-moving malware threat like the WannaCry...

MyBook Users Urged to Unplug Devices from Internet

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 critical flaw that can be triggered by anyone who knows the Internet address of an affect...

Microsoft: Attackers Exploiting Windows Zero-Day Flaw

Microsoft Corp. warns that attackers are exploiting a previously unknown vulnerability in Windows 10 and many Windows Server versions to seize control over PCs when users open a malicious document or visit a booby-trapped website. There is currently no official patch for the flaw, but Microsoft h...

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. Junes Patch Tuesday addresses just 49 security holes -- about half the normal...

Microsoft’s October Patch Batch Fixes 62 Flaws

Microsoft on Tuesday released software updates to fix at least 62 security vulnerabilities in Windows, Office and other software. Two of those flaws were detailed publicly before yesterday's patches were released, and one of them is already being exploited in active attacks, so attackers already...

Adobe, Microsoft Plug Critical Security Holes

Adobe and Microsoft both on Tuesday released patches to plug critical security vulnerabilities in their products. Microsoft's patch bundles fix close to 80 separate security problems in various versions of its Windows operating system and related software -- including two vulnerabilities that...

Microsoft Patch Tuesday, June 2019 Edition

Microsoft on Tuesday released updates to fix 88 security vulnerabilities in its Windows operating systems and related software. The most dangerous of these include four flaws for which there is already exploit code available. There's also a scary bug affecting all versions of Microsoft Office tha...

LifeLock Bug Exposed Millions of Customer Email Addresses

Identity theft protection firm LifeLock -- a company that's built a name for itself based on the promise of helping consumers protect their identities online -- may have actually exposed customers to additional attacks from ID thieves and phishers. The company just fixed a vulnerability on its si...

Experts in Lather Over ‘gSOAP’ Security Flaw

Axis Communications -- a maker of high-end security cameras whose devices can be found in many high-security areas -- recently patched a dangerous coding flaw in virtually all of its products that an attacker could use to remotely seize control over or crash the devices. The problem wasn't specif...

Microsoft Patch Tuesday, August 2021 Edition

Microsoft today released software updates to plug at least 44 security vulnerabilities in its Windows operating systems and related products. The software giant warned that attackers already are pouncing on one of the flaws, which ironically enough involves an easy-to-exploit bug in the software...

Phishers Target Anti-Money Laundering Officers at U.S. Credit Unions

A highly targeted, malware-laced phishing campaign landed in the inboxes of multiple credit unions last week. The missives are raising eyebrows because they were sent only to specific anti-money laundering contacts at credit unions, and many credit union sources say they suspect the non-public da...

Microsoft Patch Tuesday, April 2020 Edition

Microsoft today released updates to fix 113 security vulnerabilities in its various Windows operating systems and related software. Those include at least three flaws that are actively being exploited, as well as two others which were publicly detailed prior to today, potentially giving attackers...

New Anti Anti-Money Laundering Services for Crooks

A new dark web service is marketing to cybercriminals who are curious to see how their various cryptocurrency holdings and transactions may be linked to known criminal activity. Dubbed "Antinalysis," the service purports to offer a glimpse into how ones payment activity might be flagged by law...

Adobe, Microsoft Patch Critical Cracks

It's Nov. 14 -- the second Tuesday of the month a.k.a. "Patch Tuesday -- and Adobe and Microsoft have issued gobs of security updates for their software. Microsoft's 11 patch bundles fix more than four-dozen security holes in various Windows versions and Office products -- including at least four...

Thinking of a Cybersecurity Career? Read This

Thousands of people graduate from colleges and universities each year with cybersecurity or computer science degrees only to find employers are less than thrilled about their hands-on, foundational skills. Heres a look at a recent survey that identified some of the bigger skills gaps, and some...

Patch Tuesday, November 2020 Edition

Adobe and Microsoft each issued a bevy of updates today to plug critical security holes in their software. Microsofts release includes fixes for 112 separate flaws, including one zero-day vulnerability that is already being exploited to attack Windows users. Microsoft also is taking flak for...

Microsoft, Adobe Ship Critical Fixes

Microsoft today released security updates to fix almost a hundred flaws in its various Windows operating systems and related software. One bug is so serious that Microsoft is issuing patches for it on Windows XP and other operating systems the company no longer officially supports. Separately,...

The Life Cycle of a Breached Database

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 been harvested many times over by profit-seeking cybercriminals...

Three Charged for Working With Serial Swatter

The U.S. Justice Department has filed criminal charges against three U.S. men accused of swatting, or making hoax reports of bomb threats or murders in a bid to trigger a heavily armed police response to a target's address. Investigators say the men, aged 19 to 23, all carried out the attacks wit...

What’s most interesting about the Florida water system hack? That we heard about it at all.

Stories about computer security tend to go viral when they bridge the vast divide between geeks and luddites, and this weeks news about a hacker who tried to poison a Florida towns water supply was understandably front-page material. But for security nerds whove been warning about this sort of...

Phishers are Angling for Your Cloud Providers

Many companies are now outsourcing their marketing efforts to cloud-based Customer Relationship Management CRM providers. But when accounts at those CRM providers get hacked or phished, the results can be damaging for both the client's brand and their customers. Here's a look at a recent CRM-base...

Twitter’s Clumsy Pivot to X.com Is a Gift to Phishers

On April 9, Twitter/X began automatically modifying links that mention "twitter.com" to read "x.com" instead. But over the past 48 hours, dozens of new domain names have been registered that demonstrate how this change could be used to craft convincing phishing links -- such as fedetwitter.com,...

Flash, Windows Users: It’s Time to Patch

Adobe and Microsoft each pushed critical security updates to their products today. Adobe's got a new version of Flash Player available, and Microsoft released 14 updates covering more than 75 vulnerabilities, two of which were publicly disclosed prior to today's patch release. The Microsoft updat...

Is Your Browser Extension a Botnet Backdoor?

A company that rents out access to more than 10 million Web browsers so that clients can hide their true Internet addresses has built its network by paying browser extension makers to quietly include its code in their creations. This story examines the lopsided economics of extension development,...

No, I Did Not Hack Your MS Exchange Server

New data suggests someone has compromised more than 21,000 Microsoft Exchange Server email systems worldwide and infected them with malware that invokes both KrebsOnSecurity and Yours Truly by name. Lets just get this out of the way right now: It wasnt me. The Shadowserver Foundation, a nonprofit...

Patch Tuesday, March 2019 Edition

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 abuse Microsoft products, it's time once again to start thinking about getting your patches on. Malware or...

Microsoft Issues Emergency Patch for Windows Flaw

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