Threats, Cyberattacks & Vulnerabilities
Top Stories
-
Feature
23 Oct 2026
Help desk deepfakes: Why CISOs must rethink verification
Protecting the help desk from deepfake threats doesn't necessarily mean deploying the latest detection tools. Prioritizing policy over detection can stop deepfakes in their tracks. Continue Reading
-
News
22 Oct 2026
Max-severity GitLab flaw lets attackers run code on servers
A high-impact GitLab flaw lets unauthenticated attackers run code on self-managed servers. Every release since 2014 is affected. Continue Reading
-
News
19 Nov 2021
Cybercriminals discuss new business model for zero-day exploits
Digital Shadows observed increased chatter on dark web forums about the possible emergence of a new business model that would rent out zero-day exploits as a service. Continue Reading
-
Definition
19 Nov 2021
Nimda
First appearing on September 18, 2001, Nimda is a computer virus that caused traffic slowdowns as it rippled across the internet. Continue Reading
-
News
18 Nov 2021
CISA, Microsoft warn of rise in cyber attacks from Iran
CISA and Microsoft this week issued alerts about increased threat activity Iranian nation-state hacking groups, including ransomware attacks on enterprises. Continue Reading
-
News
18 Nov 2021
New side channel attack resurrects DNS poisoning threat
A new side channel attack would potentially allow attackers to poison DNS servers and reroute traffic to malicious sites. Continue Reading
-
News
17 Nov 2021
Malwarebytes slams Apple for inconsistent patching
At the center of the Apple criticism is an exploit chain that utilized two vulnerabilities -- one of which was only patched in macOS Big Sur for several months. Continue Reading
-
News
15 Nov 2021
FBI email system compromised to issue fake alerts
An unknown threat actor sent emails warning of a supply chain attack through an FBI portal used by law enforcement agencies to communicate with one another. Continue Reading
-
News
15 Nov 2021
ProxyShell leads to domain-wide ransomware attack
The domain-wide ransomware attack utilized "almost no malware," and the threat actor accomplished the attack with the months-old ProxyShell vulnerabilities. Continue Reading
- Definition 15 Nov 2021
-
News
11 Nov 2021
Aruba Central breach exposed customer data
HPE-owned Aruba Networks said one of its cloud databases was accessed by hackers who were able to make off with location and telemetry data for its customers' Wi-Fi gear. Continue Reading
-
News
11 Nov 2021
Trend Micro reveals 'Void Balaur' cybermercenary group
New Trend Micro research revealed a cybermercenary group that has been actively targeting high-profile organizations and individuals across the globe since 2015. Continue Reading
-
News
11 Nov 2021
Citrix DDOS bug leaves networks vulnerable
Citrix patched a critical bug in its Application Delivery Controller and Gateway software that left networks open to DDOS attacks. It also fixed a less-severe SD-WAN WANOP bug. Continue Reading
-
News
11 Nov 2021
'King of Fraud' sentenced for Methbot botnet operation
Aleksandr Zhukov was sentenced to 10 years in prison for the theft of $7 million in a massive digital advertising fraud operation using his 'Methbot' botnet. Continue Reading
-
News
10 Nov 2021
US targets REvil, DarkSide ransomware with $10M rewards
Infosec experts weigh in on the U.S. government's latest tactic to thwart ransomware operations -- the offering of rewards of up to $10 million for information on operators. Continue Reading
-
News
09 Nov 2021
Medical devices at risk from Siemens Nucleus vulnerabilities
Thirteen bugs, including a critical security flaw, have been patched in the Siemens Nucleus TCP/IP stack, a vital component for millions of connected medical devices. Continue Reading
-
News
08 Nov 2021
DOJ charges REvil ransomware members, seizes $6.1M
One of the accused cybercriminals, who was directly involved in the ransomware attack on Kaseya earlier this year, was arrested and faces extradition from Poland. Continue Reading
-
News
08 Nov 2021
REvil ransomware affiliates arrested in international takedown
Europol said the two suspected REvil affiliates were allegedly responsible for 5,000 ransomware infections and received approximately half a million euros in ransom payments. Continue Reading
-
News
05 Nov 2021
Routers, NAS and phones hacked in Pwn2Own competition
Security researchers have spent the week attempting to break into network-connected hardware and other devices in hopes of winning recognition and big payouts. Continue Reading
-
Definition
05 Nov 2021
cache poisoning
Cache poisoning is a type of cyber attack in which attackers insert fake information into a domain name system (DNS) cache or web cache for the purpose of harming users. Continue Reading
-
Definition
05 Nov 2021
cross-site scripting (XSS)
Cross-site scripting (XSS) is a type of injection attack in which a threat actor inserts data, such as a malicious script, into content from otherwise trusted websites. Continue Reading
-
News
04 Nov 2021
DDoS botnet exploiting known GitLab vulnerability
A botnet is using a critical GitLab vulnerability, which was disclosed and patched in April, to launch powerful DDoS attacks that have surpassed 1 Tbps. Continue Reading
-
News
03 Nov 2021
CISA requires agencies to patch nearly 300 vulnerabilities
The Cybersecurity and Infrastructure Security Agency issued a directive for government agencies that requires patching for hundreds of known software security vulnerabilities. Continue Reading
-
News
03 Nov 2021
BlackMatter claims to shut down ransomware operations
Operators behind the ransomware, known to target critical infrastructure, attributed the shutdown to pressure from authorities and the disappearance of team members. Continue Reading
-
News
02 Nov 2021
Trojan Source bugs enable 'invisible' source code poisoning
A pair of flaws in nearly every popular programming language enables attackers to hide malicious code in plain sight without the ability to be detected prior to compiling. Continue Reading
-
News
02 Nov 2021
FBI: Ransomware gangs using financial info to target companies
The FBI assessed that ransomware threat actors are likely using information like mergers, acquisitions and stock valuations to determine vulnerable enterprise targets. Continue Reading
-
News
02 Nov 2021
Why cloud bugs don't get CVEs, and why it's an issue
Lack of public disclosures for cloud bugs can allow vendors to sit on vulnerability reports and can prevent researchers from getting acknowledgement and payouts. Continue Reading
-
Definition
29 Oct 2021
shoulder surfing
Shoulder surfing is using direct observation techniques, such as looking over someone's shoulder, to get information. Continue Reading
-
News
29 Oct 2021
Europol 'targets' 12 suspects in ransomware bust
Europol has not said whether the suspected ransomware actors were arrested or detained, but the 12 were allegedly involved in attacks that affected 1,800 victims in 71 countries. Continue Reading
-
News
28 Oct 2021
Hackers upping SSL usage for encrypted attacks, communications
A report from cloud security vendor Zscaler found that cybercriminals are using secure connections to evade detection while carrying out network attacks. Continue Reading
-
News
28 Oct 2021
Avast releases decryptors for multiple ransomware strains
Victims of three separate ransomware families can now recover data using tools developed by the antivirus vendor with help from a malware analyst and an alleged Babuk developer. Continue Reading
-
News
26 Oct 2021
Researcher cracks 70% of neighborhood Wi-Fi passwords
A CyberArk researcher showed that $50 worth of hardware and some attack scripts are all you need to break into home and small business Wi-Fi networks. Continue Reading
-
News
25 Oct 2021
Emsisoft cracked BlackMatter ransomware, recovered victims' data
Emsisoft developed a decryptor for BlackMatter and also found vulnerabilities in about a dozen other ransomware families that can be used to recover victims' data. Continue Reading
-
News
25 Oct 2021
SolarWinds hackers attacking more IT supply chain targets
According to Microsoft, the Russian threat group known as Nobelium has already compromised 14 technology service providers across the United States and Europe. Continue Reading
-
Definition
21 Oct 2021
script kiddie
Script kiddie is a derogative term that computer hackers coined to refer to immature, but often just as dangerous, exploiters of internet security weaknesses. Continue Reading
-
Guest Post
20 Oct 2021
5 questions to ask when creating a ransomware recovery plan
These 'five W's of ransomware' will help organizations ask the right questions when creating a ransomware-specific disaster recovery plan. Continue Reading
-
News
20 Oct 2021
'LightBasin' hackers spent 5 years hiding on telco networks
A state-sponsored hacking group has been moving undetected on the networks of more than a dozen telecommunications providers, observing traffic and collecting data for years. Continue Reading
-
News
19 Oct 2021
Federal agencies issue warning on BlackMatter ransomware
U.S. government agencies say a new family of malware could create problems for critical infrastructure by shutting down critical networks and disrupting commerce. Continue Reading
-
News
18 Oct 2021
Sinclair Broadcast Group suffers ransomware attack, breach
The media giant disclosed a ransomware attack Monday that caused massive disruptions across networks and saw threat actors obtain corporate data. Continue Reading
-
News
15 Oct 2021
Burned by Apple, researchers mull selling zero days to brokers
Security researchers have grown frustrated with Apple's lack of communication, ‘silent patching’ of vulnerabilities, denial of bug bounty rewards and other issues. Continue Reading
-
News
14 Oct 2021
Google digs into Iran's APT35 hacking group
Covert phishing tactics and cleverly disguised notifications are among the calling cards of the increasingly sophisticated operation aimed at Iran's opponents. Continue Reading
-
News
13 Oct 2021
How hackers exploited RCE vulnerabilities in Atlassian, Azure
Barracuda researchers examined exploitation activity and attack patterns for two remote code execution vulnerabilities affecting Atlassian's Confluence and Microsoft's Azure. Continue Reading
-
News
12 Oct 2021
Apple patches iOS vulnerability actively exploited in the wild
Apple said in a security advisory that it had received a report that the iOS flaw, which impacts kernel extension IOMobileFrameBuffer, 'may have been actively exploited.' Continue Reading
-
News
11 Oct 2021
Iranian password spraying campaign hits Office 365 accounts
The Iran-backed DEV-0343 threat group has launched a password spraying offensive against Office 365 accounts in the defense, maritime and oil industries. Continue Reading
-
Definition
07 Oct 2021
decompression bomb (zip bomb, zip of death attack)
A decompression bomb -- also known as a zip bomb or zip of death attack -- is a malicious archive file containing a large amount of compressed data. Continue Reading
-
News
06 Oct 2021
Apache HTTP Server vulnerability under active attack
Security experts are urging administrators to update their installations of Apache HTTP Server following the disclosure of a zero-day vulnerability that had been under attack. Continue Reading
-
News
06 Oct 2021
Iranian hackers abusing Dropbox in cyberespionage campaign
A group of hackers believed to be based in Iran is targeting organizations in the U.S. and elsewhere with a campaign that uses cloud storage service Dropbox. Continue Reading
-
News
06 Oct 2021
Twitch confirms data breach following massive leak
Leakers claim to have stolen almost 6,000 internal Git repositories, including 'the entirety of Twitch.tv' and content creator payouts. Continue Reading
-
News
04 Oct 2021
2 suspected ransomware operators arrested in Ukraine
A coordinated international law enforcement operation led to the arrest of two alleged ransomware operators, though the ransomware gang has not been identified. Continue Reading
-
Definition
01 Oct 2021
IP spoofing
Internet Protocol (IP) spoofing is a type of malicious attack where the threat actor hides the true source of IP packets to make it difficult to know where they came from. Continue Reading
-
Feature
30 Sep 2021
Get started with the Ghidra reverse-engineering framework
Malware analysts use Ghidra to examine code to better understand how it works. Learn what to expect from the reverse-engineering framework, how to start using it and more. Continue Reading
-
News
30 Sep 2021
Researchers hack Apple Pay, Visa 'Express Transit' mode
Academic researchers discover an attack technique that enables them to make fraudulent transactions on locked iPhones when Apple Pay and Visa cards are set up for transit mode. Continue Reading
-
News
29 Sep 2021
Telegram bots allowing hackers to steal OTP codes
A simplified new attack tool based on Telegram scripts is allowing criminals to steal one-time password credentials and take over user accounts and drain bank funds. Continue Reading
-
News
29 Sep 2021
Group-IB CEO Ilya Sachkov charged with treason in Russia
Group-IB maintains the innocence of CEO and founder Ilya Sachkov and said that co-founder and CTO Dmitry Volkov will assume leadership of the company. Continue Reading
-
News
28 Sep 2021
Ransomware: Has the U.S. reached a tipping point?
The ransomware problem has grown more severe in recent years due to a growing number of attacks against large organizations and the standardization of double-extortion tactics. Continue Reading
-
News
28 Sep 2021
SolarWinds hackers Nobelium spotted using a new backdoor
Microsoft researchers believe Nobelium, the Russian-backed group that breached SolarWinds, has been using a backdoor tool called FoggyWeb since at least April. Continue Reading
-
News
24 Sep 2021
Spurned researcher posts trio of iOS zero days
An anonymous bug hunter critical of Apple's handling of reports to its bounty program has released details on three zero-day vulnerabilities in its iOS mobile platform. Continue Reading
-
News
22 Sep 2021
Turla deploying 'secondary' backdoor in state-sponsored attacks
Cisco Talos said hackers connected to the Russian APT Turla are using a new piece of malware to get persistent access on infected networks in the U.S., Germany and Afghanistan. Continue Reading
-
News
22 Sep 2021
Marcus & Millichap hit with possible BlackMatter ransomware
The real estate firm confirmed in a SEC filing this week that it had suffered a recent cyber attack but claimed there was no 'material disruption' to its business. Continue Reading
-
News
21 Sep 2021
Treasury Department sanctions cryptocurrency exchange Suex
In the ongoing battle against ransomware attacks, the Treasury Department sanctioned Suex, a cryptocurrency exchange accused of laundering ransom payments. Continue Reading
-
Definition
21 Sep 2021
email virus
An email virus consists of malicious code distributed in email messages to infect one or more devices. Continue Reading
-
News
20 Sep 2021
Italian Mafia implicated in massive cybercrime network
A recent spate of phishing attacks and SMS fraud scams in Spain is being blamed on cybercriminals who were operating from the Canary Islands with backing from the Italian mob. Continue Reading
-
News
20 Sep 2021
Microsoft details 'OMIGOD' Azure vulnerability fixes, threats
Microsoft fixed the open source OMI software during last week's Patch Tuesday, but the tech giant has struggled to get the updated agents to Azure customers. Continue Reading
-
News
16 Sep 2021
Bitdefender releases REvil universal ransomware decryptor
The REvil decryptor key helps victims recover their encrypted files, as long as the attacks were made before July 13, which is when REvil went off the grid for two months. Continue Reading
-
News
16 Sep 2021
ExpressVPN stands behind CIO named in UAE hacking scandal
ExpressVPN said it will not cut ties with CIO Daniel Gericke, who was implicated by the DOJ in state-sponsored hacking on behalf of the United Arab Emirates government. Continue Reading
-
Definition
16 Sep 2021
browser hijacker (browser hijacking)
A browser hijacker is a malware program that modifies web browser settings without the user's permission and redirects the user to websites the user had not intended to visit. Continue Reading
-
News
15 Sep 2021
‘OMIGOD’ vulnerabilities put Azure customers at risk
OMI, the software agent at the center of a remote code execution flaw, is "just one example" of silent, pre-installed software in cloud environments, according to one researcher. Continue Reading
-
News
15 Sep 2021
McAfee discovers Chinese APT campaign 'Operation Harvest'
McAfee Enterprise found the threat actors had not only breached a company's network, but had spent 'multiple years' siphoning data from the victim before getting caught. Continue Reading
-
News
14 Sep 2021
Google patches actively exploited Chrome zero-days
Two more vulnerabilities in Google's web browser joined a growing list of Chrome zero-days that have been actively exploited in the wild this year. Continue Reading
-
Feature
14 Sep 2021
SolarWinds CEO: Breach transparency 'painful' but necessary
SolarWinds CEO Sudhakar Ramakrishna discusses his company's ongoing breach investigation, shares lessons learned from the attack and cautions IT pros on zero trust. Continue Reading
-
News
14 Sep 2021
Apple patches zero-day, zero-click NSO Group exploit
The Citizen Lab said that it found the Apple zero-day vulnerability when it was 'analyzing the phone of a Saudi activist infected with NSO Group's Pegasus spyware.' Continue Reading
-
News
13 Sep 2021
Hackers port Cobalt Strike attack tool to Linux
An unknown group of cybercriminals has created a version of the Windows-only Cobalt Strike Beacon tool that works against Linux machines, which has been used in recent attacks. Continue Reading
-
News
09 Sep 2021
'Azurescape': New Azure vulnerability fixed by Microsoft
The Azure Container Instances vulnerability would have allowed malicious actors to execute code on other customers' containers, but there have been no reports of exploitation. Continue Reading
-
Definition
09 Sep 2021
macro virus
A macro virus is a computer virus written in the same macro language used to create software programs such as Microsoft Excel or Word. Continue Reading
-
News
08 Sep 2021
Microsoft zero-day flaw exploited in the wild
Microsoft and the Cybersecurity and Infrastructure Security Agency have issued advisories warning users to mitigate against a zero-day flaw, as no patch has been released. Continue Reading
-
News
07 Sep 2021
ProxyShell attacks ramping up on unpatched Exchange Servers
Security experts say active attacks on the series of Microsoft Exchange Server flaws, which can be chained to take control of servers, are already being launched in the wild. Continue Reading
-
News
02 Sep 2021
Accellion-related breach disclosures continue to unfold
Beaumont Health disclosed some patient data was exposed through an attack on Accellion's FTA product, nine months after the attack on the legacy file transfer software occurred. Continue Reading
-
News
02 Sep 2021
Autodesk targeted in SolarWinds hack
Autodesk said in its 10-Q filing released Wednesday that it believes 'no customer operations or Autodesk products were disrupted' in the SolarWinds supply chain attack. Continue Reading
-
News
01 Sep 2021
Atlassian Confluence flaw under active attack
Administrators are advised to patch immediately after security experts confirmed mass scanning and exploits against a critical remote code execution vulnerability. Continue Reading
-
News
01 Sep 2021
Beware of proxyware: Connection-sharing services pose risks
Cisco Talos warns that sharing internet connections with random people via third-party app like Honeygain and Peer2Profit could lead to malware installations and other threats. Continue Reading
-
News
31 Aug 2021
College students targeted by money mule phishing techniques
Back to fool: University students with little security training are being targeted by Nigerian scammers to move fraudulent funds with the lure of quick bucks and flexible hours. Continue Reading
-
News
30 Aug 2021
New 'ProxyToken' Exchange Server vulnerability disclosed
The Exchange Server vulnerability could allow an attacker 'to copy all emails addressed to a target and account and forward them to an account controlled by the attacker.' Continue Reading
-
Definition
30 Aug 2021
logic bomb
A logic bomb is a string of malicious code that is inserted intentionally into a program to harm a network when certain conditions are met. Continue Reading
-
News
27 Aug 2021
Researchers discover critical flaw in Azure Cosmos DB
Wiz security researchers found a new attack vector in Microsoft Azure, which if exploited could allow an attacker to gain access to customers primary keys. Continue Reading
-
News
27 Aug 2021
T-Mobile offers details of data breach that affected 40M
According to T-Mobile, the hackers who stole its customer database had knowledge of the company's network and testing setup. The hack was a carefully planned network breach. Continue Reading
-
News
26 Aug 2021
Microsoft finally issues ProxyShell security advisory
The ProxyShell advisory includes a call to patch, as well as details on which Exchange servers are vulnerable. In short: Those without the May security update are unprotected. Continue Reading
-
Podcast
26 Aug 2021
Risk & Repeat: ProxyShell problems mount
CISA warned threat actors have begun exploiting the dangerous ProxyLogon flaws, but tens of thousands of vulnerable Microsoft Exchange servers remain online. Continue Reading
-
News
25 Aug 2021
Bugs aplenty as VMware, Cisco and F5 drop security updates
Two critical updates from Cisco, remote code execution flaws in F5's Big-IP, and a half-dozen VMware security holes are among the more pressing issues for admins to address. Continue Reading
-
News
24 Aug 2021
4 emerging ransomware groups take center stage
Four ransomware operations -- AvosLocker, Hive, HelloKitty and LockBit 2.0 -- have popped up on the radar of researchers with Palo Alto Network's Unit 42 team. Continue Reading
-
News
23 Aug 2021
CISA: ProxyShell flaws being actively exploited, patch now
Security researchers weighed in with evidence of ProxyShell exploitation by threat actors using malicious web shells and a new ransomware variant called 'LockFile.' Continue Reading
-
Definition
23 Aug 2021
spear phishing
Spear phishing is a malicious email spoofing attack that targets a specific organization or individual, seeking unauthorized access to sensitive information. Continue Reading
-
Definition
23 Aug 2021
ILOVEYOU virus
The ILOVEYOU virus comes in an email with 'ILOVEYOU' in the subject line and contains an attachment that, when opened, results in the message being re-sent to everyone in the recipient's Microsoft Outlook address book. Continue Reading
-
Guest Post
18 Aug 2021
How attackers use open source intelligence against enterprises
Cato Networks' Etay Maor explains how cybercriminals use open source intelligence to detect and attack vulnerable enterprise networks and employees. Continue Reading
-
News
16 Aug 2021
FBI watchlist exposed by misconfigured Elasticsearch cluster
A terrorist watchlist was found in an exposed database, and security researcher Bob Diachenko says there is no way of knowing just how long it was open to the public. Continue Reading
-
News
13 Aug 2021
New ransomware crew hammers on PrintNightmare bugs
PrintNightmare, the Microsoft print spooler flaws patched in July, is the favorite target for a new ransomware group known as Vice Society, according to Cisco Talos. Continue Reading
-
News
12 Aug 2021
Months after the Accellion breach, more victims emerge
The Accellion breach occurred last December, but more victims have come to light in recent weeks as investigations, notifications and disclosures stretch on through the summer. Continue Reading
-
News
12 Aug 2021
Microsoft discloses new print spooler flaw without patch
The latest flaw in Windows print spooler software, which has yet to be patched, comes weeks after the PrintNightmare vulnerability and other related bugs. Continue Reading
-
News
11 Aug 2021
Hackers selling access to breached networks for $10,000
Network access is a closely-guarded commodity in underground hacker forums, with some sellers not even revealing the names of their victims until money has changed hands. Continue Reading
-
News
09 Aug 2021
'ProxyShell' Exchange bugs resurface after presentation
A critical vulnerability in Microsoft Exchange is once again making the rounds with attackers, following a Black Hat presentation from the researcher who found it. Continue Reading
-
Answer
06 Aug 2021
Is bitcoin safe? How to secure your bitcoin wallet
As bitcoin use increases, so too have the number of cyber attacks on cryptocurrency exchanges and wallets. Learn how to keep bitcoin use secure. Continue Reading
-
News
05 Aug 2021
Apple's M1 silicon brings new challenges for malware defenders
Noted security researcher Patrick Wardle told Black Hat 2021 attendees that catching malware attacks on new macOS systems requires learning the subtleties of ARM64 architecture. Continue Reading
-
News
05 Aug 2021
Hackers build a better timing attack to crack encryption keys
A new technique for cracking encryption keys can overcome the limitations of popular timing attacks by analyzing network packets, according to researchers at Black Hat 2021. Continue Reading
