Threats, Cyberattacks & Vulnerabilities
Top Stories
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News
02 Oct 2026
Developers facing a patchwork of competing AI safety regulations
Policymakers are moving swiftly to regulate agentic AI, creating varying mandates across regions and leaving developers to figure out compliance. Experts explain how the industry can keep pace. Continue Reading
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News
01 Oct 2026
Use Cybersecurity Awareness Month as a springboard -- not a fire drill
National cybersecurity awareness efforts peak in October, but attacks happen year-round. Experts explain how CISOs can use Cybersecurity Awareness Month to build long-term momentum. Continue Reading
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News
25 Jan 2024
HPE breached by Russian APT behind Microsoft hack
HPE suspects that Cozy Bear, a Russian state-sponsored threat actor also known as Midnight Blizzard and Nobelium, breached its network twice in 2020. Continue Reading
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News
24 Jan 2024
NCSC says AI will increase ransomware, cyberthreats
While other threats are likely to increase as well, the U.K.'s National Cyber Security Centre warns that threat actors will use AI to continue the influx of ransomware attacks. Continue Reading
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News
23 Jan 2024
Attacks begin on critical Atlassian Confluence vulnerability
Exploitation activity for CVE-2023-22527 marks the third time in four months that a critical Atlassian Confluence flaw has gained threat actors' attention. Continue Reading
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News
22 Jan 2024
Microsoft breached by Russian APT behind SolarWinds attack
Several email accounts belonging to Microsoft senior leadership were accessed as part of the breach, though Microsoft found 'no evidence' of customer environments being accessed. Continue Reading
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News
19 Jan 2024
Chinese threat group exploited VMware vulnerability in 2021
After VMware confirmed that CVE-2023-34048 had been exploited, Mandiant attributed the activity to a China-nexus threat group and revealed that exploitation began in late 2021. Continue Reading
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News
18 Jan 2024
Chainalysis observes decrease in cryptocurrency crime in 2023
During 2023, Chainalysis tracked a decrease in the total value and volume of illicit cryptocurrency transactions. But it is unclear if the downward trend will continue. Continue Reading
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News
17 Jan 2024
New zero-days in Citrix NetScaler ADC, Gateway under attack
The new vulnerabilities come four months after a variety of threat actors exploited the 'Citrix Bleed' zero-day flaw in NetScaler ADC and Gateway products. Continue Reading
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News
17 Jan 2024
Google, researchers in dispute over account hijacking attacks
Google disputes aspects of threat research that CloudSEK published last month claiming threat actors are maintaining persistence after hijacking Google user accounts. Continue Reading
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News
16 Jan 2024
Ivanti zero-day flaws under 'widespread' exploitation
Volexity confirmed that multiple threat actors have exploited two critical Ivanti zero-day vulnerabilities, with 1,700 devices compromised so far. Continue Reading
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News
11 Jan 2024
Ivanti confirms 2 zero-day vulnerabilities are under attack
Volexity reported the vulnerabilities to Ivanti after discovering that suspected Chinese nation-state threat actors created an exploit chain to achieve remote code execution. Continue Reading
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News
10 Jan 2024
China claims it cracked Apple's AirDrop, can track senders
The flaw used by Chinese researchers to crack Apple's AirDrop encryption was reported to the company in 2019 by researchers at German university TU Darmstadt. Continue Reading
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News
09 Jan 2024
Account hijacking, cryptocurrency scams spread on X
One company that had its account stolen and used for cryptocurrency scams, CertiK, said it was hacked through a phishing attack from a journalist's compromised account. Continue Reading
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Feature
09 Jan 2024
How to fix the top 5 cybersecurity vulnerabilities
Check out how to fix five top cybersecurity vulnerabilities to prevent data loss from poor endpoint security, ineffective network monitoring, weak authentication and other issues. Continue Reading
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Feature
04 Jan 2024
10 of the biggest zero-day attacks of 2023
There were many zero-day vulnerabilities exploited in the wild in 2023. Here's a look at 10 of the most notable and damaging zero-day attacks last year. Continue Reading
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News
04 Jan 2024
December ransomware attacks disrupt healthcare organizations
Two attacks last month exposed the sensitive information of more than 3 million individuals as ransomware attacks continued to disrupt networks and expose private data. Continue Reading
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News
27 Dec 2023
Another Barracuda ESG zero-day flaw exploited in the wild
On Christmas Eve, Barracuda disclosed that a China-nexus threat actor had resumed attacks against its Email Security Gateway appliance using a new zero-day vulnerability. Continue Reading
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News
21 Dec 2023
10 of the biggest ransomware attacks in 2023
Ransomware attacks against U.S. organizations hit record levels this year as threat actors stepped up extortion tactics and took shaming victims to new levels. Continue Reading
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Tip
21 Dec 2023
Web fuzzing: Everything you need to know
Web fuzzing provides automated web application testing, which enables security teams to discover vulnerabilities within web apps before attackers do. Continue Reading
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Definition
21 Dec 2023
Zoombombing
Zoombombing is a type of cyber-harassment in which an unwanted and uninvited user or group of such users interrupts online meetings on the Zoom video conference app. Continue Reading
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News
19 Dec 2023
FBI leads Alphv/BlackCat takedown, decrypts victims' data
The latest law enforcement effort to halt the surge of ransomware attacks was successful in disrupting one of the most active ransomware-as-a-service groups. Continue Reading
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News
18 Dec 2023
Akamai discloses zero-click exploit for Microsoft Outlook
During research into an older Microsoft Outlook privilege escalation vulnerability, Akamai discovered two new flaws that can be chained for a zero-click RCE exploit. Continue Reading
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News
14 Dec 2023
Russian APT exploiting JetBrains TeamCity vulnerability
The Russian hackers behind the SolarWinds attacks are the latest nation-state group to exploit a critical TeamCity vulnerability to gain initial access to victims' servers. Continue Reading
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News
14 Dec 2023
Splunk: AI isn't making spear phishing more effective
While new research shows AI tools won't make it easier for adversaries to conduct successful phishing attacks, social engineering awareness should remain a priority. Continue Reading
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News
13 Dec 2023
How ransomware gangs are engaging -- and using -- the media
New Sophos research shows that ransomware groups are not only attacking technical systems, but taking advantage of information systems as well to pressure victims into paying. Continue Reading
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News
06 Dec 2023
Forescout uncovers 21 Sierra Wireless router vulnerabilities
Forescout is urging enterprises to patch software for affected OT/IoT routers as attackers increasingly target edge devices to gain network access to critical infrastructure. Continue Reading
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News
05 Dec 2023
Exposed Hugging Face API tokens jeopardized GenAI models
Lasso Security discovered more than 1,600 exposed Hugging Face API tokens provided access to generative AI and large-language models contained in hundreds of repositories. Continue Reading
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News
05 Dec 2023
Ransomware ramps up against private sector in November
Ransomware disclosures and reports increased again in November, with the most disruptive and dangerous attacks occurring against healthcare organizations. Continue Reading
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News
04 Dec 2023
Fancy Bear hackers still exploiting Microsoft Exchange flaw
Microsoft and Polish Cyber Command warned enterprises that Russian nation-state hackers are exploiting CVE-2023-23397 to gain privileged access to Exchange email accounts. Continue Reading
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News
30 Nov 2023
Black Basta ransomware payments exceed $100M since 2022
Insurance provider Corvus and blockchain analytics vendor Elliptic partnered to examine how much damage the Black Basta ransomware group has caused in less than two years. Continue Reading
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News
30 Nov 2023
ScamClub spreads fake McAfee alerts to ESPN, AP, CBS sites
Malwarebytes said the malicious affiliate behind the fake virus alerts and other malvertising attacks has been flagged many times over the years, but McAfee has yet to take action. Continue Reading
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News
28 Nov 2023
Europol, Ukraine police arrest alleged ransomware ringleader
Europol and Ukraine's National Police arrested the alleged leader of a ransomware gang last week, along with four accomplices, dismantling the cybercrime group. Continue Reading
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Definition
28 Nov 2023
timing attack
A timing attack is a type of side-channel attack that exploits the amount of time a computer process runs to gain knowledge about or access a system. Continue Reading
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News
27 Nov 2023
Threat actors targeting critical OwnCloud vulnerability
Researchers observed exploitation attempts against a vulnerability affecting OwnCloud's Graph API app, highlighting threat actors' continued focus on file-sharing products. Continue Reading
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News
21 Nov 2023
CISA, FBI warn of LockBit attacks on Citrix Bleed
The latest advisory on exploitation of the Citrix Bleed vulnerability confirmed that the LockBit ransomware group perpetrated the attack on Boeing. Continue Reading
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Tip
17 Nov 2023
An introduction to IoT penetration testing
IoT systems are complex, and that makes checking for vulnerabilities a challenge. Penetration testing is one way to ensure your IoT architecture is safe from cyber attacks. Continue Reading
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News
16 Nov 2023
CISA, FBI issue alert for ongoing Scattered Spider activity
The government advisory follows several high-profile attacks attributed to Scattered Spider, which uses advanced social engineering techniques like SIM swapping. Continue Reading
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News
16 Nov 2023
Alphv ransomware gang claims it reported MeridianLink to SEC
MeridianLink said it recently identified a "cybersecurity incident," but the Alphv ransomware gang claims it breached the company and compromised customer data. Continue Reading
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News
15 Nov 2023
LockBit observed exploiting critical 'Citrix Bleed' flaw
The Financial Services Information Sharing and Analysis Center warned that LockBit ransomware actors are exploiting CVE-2023-4966, also known as Citrix Bleed. Continue Reading
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News
15 Nov 2023
VMware discloses critical, unpatched Cloud Director bug
A manual workaround is currently available for a critical VMware Cloud Director Appliance flaw, tracked as CVE-2023-34060, but no patch is available at press time. Continue Reading
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News
14 Nov 2023
Cryptocurrency wallets might be vulnerable to 'Randstorm' flaw
Cryptocurrency recovery company Unciphered discovered a vulnerability in a JavaScript Bitcoin library that could jeopardize private keys. Continue Reading
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News
13 Nov 2023
LockBit ransomware gang claims it leaked stolen Boeing data
Boeing confirmed that it experienced a cybersecurity incident following LockBit's claims, but the aircraft manufacturer has not directly confirmed a ransomware attack. Continue Reading
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News
09 Nov 2023
Lace Tempest exploits SysAid zero-day vulnerability
SysAid urged users to patch a zero-day vulnerability in its on-premises software, which is being exploited by the threat actor behind the MoveIt Transfer ransomware attacks. Continue Reading
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News
09 Nov 2023
SolarWinds fires back at SEC over fraud charges
SolarWinds said the SEC's lawsuit contains several 'false claims,' including allegations about how Russian nation-state hackers first got inside the company's network Continue Reading
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News
08 Nov 2023
FBI: Ransomware actors hacking casinos via third parties
A new Private Industry Notification focuses on ransomware trends involving attacks against casinos as well as a callback phishing campaign perpetrated by the Luna Moth gang. Continue Reading
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News
08 Nov 2023
Atlassian Confluence vulnerability under widespread attack
Atlassian's Confluence Data Center and Server products are under attack again as reports of widespread exploitation roll in just days after CVE-2023-22518 was publicly disclosed. Continue Reading
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News
06 Nov 2023
Ransomware continues to rise in October across all sectors
Ransomware disclosures and reports surged last month, leading in some cases to bankruptcy filing, prolonged business disruptions and ambulance diversions for hospitals. Continue Reading
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News
02 Nov 2023
Zscaler finds 117 Microsoft 365 bugs via SketchUp 3D file type
Microsoft published patches to address all 117 Microsoft 365 Apps flaws disclosed Tuesday, and the tech giant has disabled support for SketchUp, or SKP, 3D model files. Continue Reading
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Podcast
01 Nov 2023
Risk & Repeat: Breaking down SEC charges against SolarWinds
This episode covers the SEC charges against SolarWinds and CISO Timothy Brown for allegedly hiding known cybersecurity risks prior to the 2020 supply chain attack it suffered. Continue Reading
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News
31 Oct 2023
No patches yet for Apple iLeakage side-channel attack
Apple said it is working on more complete fixes for the iLeakage side-channel attack technique, but only one partial mitigation is currently available to macOS customers. Continue Reading
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News
31 Oct 2023
SEC charges SolarWinds for security failures, fraud
The SEC accused SolarWinds and CISO Timothy Brown of hiding known cybersecurity risks that were further highlighted by the supply chain attack revealed in 2020. Continue Reading
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News
31 Oct 2023
Dual ransomware attacks on the rise, but causes are unclear
While the FBI warned enterprises of an increase in dual ransomware attacks, infosec experts said there's insufficient data to consider the threat a trend. Continue Reading
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News
26 Oct 2023
NCC Group details 153% spike in September ransomware attacks
NCC Group analysts warned the significant year-over-year increase will likely continue. Organizations may see 4,000 ransomware attacks by the end of 2023. Continue Reading
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News
24 Oct 2023
Cisco IOS XE instances still under attack, patch now
In the days since Cisco's initial disclosure, the networking giant found a second Cisco IOS XE zero-day as well as new evasion techniques being utilized by threat actors. Continue Reading
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Definition
24 Oct 2023
Plundervolt
Plundervolt is the name of an undervolting attack that targeted Intel central processing units (CPUs). Continue Reading
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News
23 Oct 2023
Okta customer support system breached via stolen credentials
During the latest breach against the identity and access management vendor, attackers took advantage of the system intended to provide support for Okta customers. Continue Reading
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News
19 Oct 2023
North Korean hackers exploit critical TeamCity vulnerability
While a patch is available, Microsoft and JetBrains confirmed TeamCity users have been compromised in attacks that leverage CVE-2023-42793 as an initial attack vector. Continue Reading
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News
18 Oct 2023
Mandiant: Citrix zero-day actively exploited since August
Exploitation against CVE-2023-4966 is ongoing, and Mandiant CTO Charles Carmakal warned patching alone is insufficient against potential attacks that leverage MFA bypass techniques. Continue Reading
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News
17 Oct 2023
Cisco IOS XE zero-day facing mass exploitation
VulnCheck said its public scanning for CVE-2023-20198 revealed that 'thousands' of internet-facing Cisco IOS XE systems have been compromised with malicious implants. Continue Reading
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News
16 Oct 2023
Cisco working on fix for critical IOS XE zero-day
Cisco designated the bug, CVE-2023-20198, with a CVSS score of 10 and said it was working on a patch, but advised customers to apply mitigations in the meantime. Continue Reading
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News
13 Oct 2023
Ransomware gang targets critical Progress WS_FTP Server bug
The vulnerability used in the failed ransomware attack, CVE-2023-40044, is a .NET deserialization vulnerability in Progress Software's WS_FTP Server with a CVSS score of 10. Continue Reading
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Podcast
12 Oct 2023
Risk & Repeat: Rapid Reset and the future of DDoS attacks
This podcast episode covers the record-breaking DDoS attack Rapid Reset, why it stands out among other DDoS campaigns and whether it will be widely replicated in the future. Continue Reading
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News
10 Oct 2023
'Rapid Reset' DDoS attacks exploiting HTTP/2 vulnerability
Cloudflare said the Rapid Reset DDoS attack was three times larger than the attack it had on record. Google similarly called it 'the largest DDoS attack to date.' Continue Reading
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News
06 Oct 2023
MGM faces $100M loss from ransomware attack
MGM's 8-K filing revealed some personal customer data was stolen during the September attack and said the company expects cyber insurance to sufficiently cover the losses. Continue Reading
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News
04 Oct 2023
Critical Atlassian Confluence zero-day flaw under attack
Collaboration software vendor Atlassian urged customers with affected versions of Confluence Data Center and Server to apply patches for CVE-2023-22515 immediately. Continue Reading
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News
03 Oct 2023
Spyware vendor exploiting kernel flaw in Arm Mali GPU drivers
Arm Mali GPUs affected by CVE-2023-4211, which was discovered by Google researchers, include a wide range of Android phones as well as ChromeOS devices such as Chromebooks. Continue Reading
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News
03 Oct 2023
Ransomware disrupts hospitality, healthcare in September
Ransomware disclosures and reports last month were headlined by attacks on MGM Resorts and Caesars Entertainment, which proved costly to the Las Vegas hospitality giants. Continue Reading
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News
02 Oct 2023
Openwall patches 3 of 6 Exim zero-day flaws
The Openwall Project urged users to upgrade to the latest version of Exim, but there have been timely patching struggles with the message transfer agent software in the past. Continue Reading
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Definition
02 Oct 2023
voice squatting
Voice squatting is an attack vector for voice user interfaces, or VUIs, that exploits homonyms -- words that sound the same, but are spelled differently -- and input errors -- words that are mispronounced. Continue Reading
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Tip
29 Sep 2023
5 common browser attacks and how to prevent them
Browsers are critical components of any organization, especially with the rise of web apps. Security teams and users must, therefore, know how to avoid common browser attacks. Continue Reading
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News
28 Sep 2023
US, Japan warn China-linked 'BlackTech' targeting routers
CISA said BlackTech has targeted Cisco and other router makers by using a variety of tools and techniques to modify and even replace devices' firmware. Continue Reading
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News
28 Sep 2023
Cisco patches zero-day vulnerability under attack
Cisco said its Advanced Security Initiatives Group discovered the zero-day flaw while investigating attempted attacks on the vendor's Group Encrypted Transport VPN feature. Continue Reading
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News
26 Sep 2023
Clop MoveIt Transfer attacks affect over 2,000 organizations
According to research by security vendor Emsisoft, 2,095 organizations and 62,054,613 individuals have been affected by the Clop gang's attacks on MoveIt Transfer customers. Continue Reading
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News
25 Sep 2023
Dallas doles out $8.5M to remediate May ransomware attack
The city of Dallas provided a detailed attack timeline that showed Royal threat actors compromised a service account a month before ransomware was deployed. Continue Reading
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News
22 Sep 2023
Apple issues emergency patches for 3 zero-day bugs
Apple said CVE-2023-41992, CVE-2023-41991 and CVE-2023-41993 -- all reported by Citizen Lab and Google researchers -- might have been exploited against versions of iOS before 16.7. Continue Reading
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News
20 Sep 2023
Okta: Caesars, MGM hacked in social engineering campaign
Identity management vendor Okta had previously disclosed that four unnamed customers had fallen victim to a social engineering campaign that affected victims' MFA protections. Continue Reading
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News
20 Sep 2023
Cyber insurance report shows surge in ransomware claims
Coalition's H1 2023 report shows ransomware activity increased and severity reached "historic" highs as businesses lost an average of more than $365,000 following an attack. Continue Reading
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News
18 Sep 2023
Microsoft AI researchers mistakenly expose 38 TB of data
Microsoft said no customer data was affected by the Azure Storage exposure and 'no other internal services were put at risk because of this issue,' which has been mitigated. Continue Reading
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News
14 Sep 2023
Developer platform Retool breached in vishing attack
A successful vishing attack against a Retool employee led to account takeovers of 27 cloud customers, but the company is pointing the finger at Google. Continue Reading
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News
14 Sep 2023
Caesars Entertainment breached in social engineering attack
Caesars said it took steps after the breach to "ensure that the stolen data is deleted by the unauthorized actor," suggesting it paid a ransom to the attackers. Continue Reading
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News
14 Sep 2023
Palo Alto Networks: 80% of security exposures exist in cloud
It's no surprise that organizations struggle with cloud security, but a new report reveals an alarming split between cloud and on-premise security exposures. Continue Reading
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Podcast
12 Sep 2023
Risk & Repeat: Big questions remain on Storm-0558 attacks
Microsoft revealed that Storm-0558 threat actors stole a consumer signing key from its corporate network, but many questions about the breach and subsequent attacks remain. Continue Reading
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News
11 Sep 2023
Cisco VPN flaw faces attempted Akira ransomware attacks
Cisco said it became aware of 'attempted exploitation' last month and referenced an Aug. 24 security advisory saying its VPNs were under attack by the Akira ransomware gang. Continue Reading
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News
06 Sep 2023
Okta: 4 customers compromised in social engineering attacks
Okta said a threat actor convinced IT personnel at several customers to reset MFA factors for highly privileged users, though it's unclear how they accomplished that task. Continue Reading
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News
05 Sep 2023
Ransomware attacks on education sector spike in August
While data breach notifications for MoveIt Transfer customers continued to rise, August also saw ransomware ramp up against schools and universities as classes resumed. Continue Reading
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News
30 Aug 2023
FBI, Justice Department dismantle Qakbot malware
The FBI operation, one of the largest U.S.-led botnet disruption efforts ever, included international partners such as France, Germany, the Netherlands and the United Kingdom. Continue Reading
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News
29 Aug 2023
Mandiant reveals new backdoors used in Barracuda ESG attacks
Further investigations show threat actors were prepared for Barracuda Networks' remediation efforts, including an action notice to replace all compromised devices. Continue Reading
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News
29 Aug 2023
Cisco VPNs under attack via Akira, LockBit ransomware
Cisco and Rapid7 say ransomware actors LockBit and Akira have apparently been targeting Cisco VPNs not configured for multifactor authentication. Continue Reading
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News
24 Aug 2023
FBI: Suspected Chinese actors continue Barracuda ESG attacks
The alert comes after Barracuda Networks issued an advisory stating that patches for CVE-2023-2868 were insufficient and all affected ESG devices need to be replaced. Continue Reading
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News
23 Aug 2023
Sophos: RDP played a part in 95% of attacks in H1 2023
While Sophos observed increasing activity around Active Directory and Remote Desktop Protocol abuse, it recommended simple mitigation steps can limit the attack surface. Continue Reading
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News
22 Aug 2023
Ivanti issues fix for third zero-day flaw exploited in the wild
CVE-2023-38035 is the latest Ivanti zero-day vulnerability to be exploited in the wild. The vendor has released a series of remediation recommendations. Continue Reading
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News
21 Aug 2023
Vendors criticize Microsoft for repeated security failings
Microsoft is facing frustration for numerous security issues, including problematic transparency, numerous patch bypasses and inconsistent communication practices. Continue Reading
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News
17 Aug 2023
CISA, vendors warn Citrix ShareFile flaw under attack
A vulnerability in the managed file transfer product that enterprises use is being actively exploited two months after Citrix released a fix. Continue Reading
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News
10 Aug 2023
Palo Alto: SugarCRM zero-day reveals growing cloud threats
Recent incident response investigations reveal that attackers are becoming more advanced when it comes to the cloud, but there are steps enterprises can take to mitigate risks. Continue Reading
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News
10 Aug 2023
Trend Micro discloses 'silent threat' flaws in Azure ML
During a Black Hat 2023 session, Trend Micro researchers discussed several vulnerabilities they discovered in Azure Machine Learning that allow sensitive information disclosure. Continue Reading
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News
10 Aug 2023
Researchers put LLMs to the test in phishing email experiment
A Black Hat USA 2023 session discussed an experiment that used large language models to see how effective the technology can be in both detecting and producing phishing emails. Continue Reading
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News
09 Aug 2023
Onapsis researchers detail new SAP security threats
At Black Hat 2023, Onapsis researchers demonstrated how attackers could chain a series of SAP vulnerabilities impacting the P4 protocol to gain root access to a target network. Continue Reading
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News
08 Aug 2023
Google unveils 'Downfall' attacks, vulnerability in Intel chips
Google researcher Daniel Moghimi first reported CVE-2022-40982 and the resulting data leak attacks to Intel in August 2022, but it's taken nearly 12 months to disclose the flaw. Continue Reading
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Definition
07 Aug 2023
insecure deserialization
Insecure deserialization is a vulnerability in which untrusted or unknown data is used to inflict a denial-of-service attack, execute code, bypass authentication or otherwise abuse the logic behind an application. Continue Reading
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News
03 Aug 2023
MoveIt Transfer attacks dominate July ransomware disclosures
Traditional ransomware attacks took a back seat last month, as Clop operators continued to claim victims from the zero-day attacks on MoveIt Transfer customers. Continue Reading
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News
31 Jul 2023
CISA details backdoor malware used in Barracuda ESG attacks
CISA said Friday that 'Submarine' is a novel persistent backdoor used in attacks against Barracuda Email Security Gateway appliances vulnerable to CVE-2023-2868. Continue Reading