Threats, Cyberattacks & Vulnerabilities
Top Stories
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Tip
29 Jul 2026
What to know about deepfake phishing simulation software
Deepfake phishing simulation software uses AI to probe organizational resistance to state-of-the-art social engineering attacks. Learn why they should be on CISOs' radar. Continue Reading
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News
23 Jul 2026
OpenAI models escape containment, hack Hugging Face
In an unprecedented -- and unintended -- cyberattack, frontier AI models autonomously escaped their contained testing environment and breached another company's systems. Continue Reading
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News
27 Mar 2024
Spyware vendors behind 75% of zero-days targeting Google
Google observed 97 zero-day vulnerabilities exploited in the wild last year, which was more than a 50% increase over the 62 exploited zero-day vulnerabilities tracked in 2022. Continue Reading
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News
27 Mar 2024
Unpatched flaw in Anyscale's Ray AI framework under attack
Oligo Security researchers say thousands of Ray servers have been compromised through the flaw, but Anyscale said it has received no reports of exploitation. Continue Reading
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News
27 Mar 2024
Flashpoint observes 84% surge in ransomware attacks in 2023
The threat intelligence vendor anticipates that enterprises will continue to face increases in ransomware activity and data breaches in 2024, with some silver linings ahead. Continue Reading
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News
26 Mar 2024
SQL injection vulnerability in Fortinet software under attack
Fortinet and CISA confirmed CVE-2023-48788 is being actively exploited. But the Shadowserver Foundation found that many vulnerable instances remain online. Continue Reading
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News
26 Mar 2024
Top.gg supply chain attack highlights subtle risks
Threat actors used fake Python infrastructure and cookie stealing to poison multiple GitHub code repositories, putting another spotlight on supply chain risks. Continue Reading
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News
22 Mar 2024
'GoFetch' attack spells trouble for Apple M-series chips
Academic researchers discovered a hardware optimization feature called 'data memory-dependent prefetcher' could be abused to extract secret encryption keys from vulnerable systems. Continue Reading
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News
21 Mar 2024
AWS fixes 'FlowFixation' vulnerability for account hijacking
A Tenable researcher discovered a session fixation flaw in AWS Managed Workflows for Apache Airflow that, combined with a misconfiguration, could enable account hijacking. Continue Reading
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News
21 Mar 2024
NCC Group: Ransomware attacks jump 73% in February
While NCC Group expected an increase in ransomware attacks from January to February, year-over-year data showed just how persistent the threat is to enterprises. Continue Reading
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News
20 Mar 2024
CISA urges defensive actions against Volt Typhoon threats
The U.S. cybersecurity agency advised critical infrastructure leaders to adopt several best practices and defensive measures to protect against Chinese state-sponsored attacks. Continue Reading
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Podcast
19 Mar 2024
Risk & Repeat: Microsoft's Midnight Blizzard mess
This podcast episode discusses the latest disclosure from Microsoft regarding Midnight Blizzard, which accessed internal systems, source code and some cryptographic secrets. Continue Reading
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Definition
15 Mar 2024
virus (computer virus)
A computer virus is a type of malware that attaches itself to a program or file. A virus can replicate and spread across an infected system and it often propagates to other systems, much like a biological virus spreads from host to host. Continue Reading
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Podcast
13 Mar 2024
Risk & Repeat: CISA hacked via Ivanti vulnerabilities
The compromise of two internal CISA systems comes on the heels of ongoing attacks and developments related to two zero-day vulnerabilities Ivanti disclosed in January. Continue Reading
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Tip
13 Mar 2024
How data poisoning attacks work
Generative AI brings business opportunities to the enterprise but also security risks. Learn about an evolving attack vector called data poisoning and how it works. Continue Reading
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Tip
13 Mar 2024
4 types of prompt injection attacks and how they work
Compromised LLMs can expose sensitive corporate data and put organizations' reputations at risk. Learn about four types of prompt injection attacks and how they work. Continue Reading
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News
12 Mar 2024
Sophos: Remote ransomware attacks on SMBs increasing
According to new research from Sophos, small businesses are seeing a rise in threats such as remotely executed ransomware attacks, malvertising, driver abuse and more. Continue Reading
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News
12 Mar 2024
LockBit attacks continue via ConnectWise ScreenConnect flaws
Coalition is latest company to confirm LockBit activity against vulnerable ScreenConnect instances. But the insurer found significant differences between previous LockBit attacks. Continue Reading
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News
11 Mar 2024
CISA confirms compromise of its Ivanti systems
CISA said that approximately one month ago, it identified 'activity indicating the exploitation of vulnerabilities in Ivanti products the agency uses.' Continue Reading
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News
08 Mar 2024
Midnight Blizzard accessed Microsoft systems, source code
Microsoft said Midnight Blizzard used data stolen from a breach of its corporate email system to access other parts of the company's network, including source code repositories. Continue Reading
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Podcast
07 Mar 2024
Risk & Repeat: Alphv/BlackCat's chaotic exit (scam)
This podcast episode discusses the possible exit scam of ransomware-as-a-service gang Alphv/BlackCat, as well as the chaotic months the gang had leading up to its closure. Continue Reading
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News
07 Mar 2024
Former Google engineer charged with stealing AI trade secrets
Linwei Ding, a Chinese national, allegedly evaded Google's data loss prevention systems and stole confidential information to start his own China-based AI company. Continue Reading
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News
06 Mar 2024
Apple discloses 2 iOS zero-day vulnerabilities
CVE-2024-23225 and CVE-2024-23296, which bypass kernel memory protections, mark the second and third zero-day vulnerabilities that Apple has disclosed and patched this year. Continue Reading
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News
05 Mar 2024
Alphv/BlackCat leak site goes down in possible exit scam
An Alphv/BlackCat affiliate accused the ransomware gang of stealing a ransom payment worth more than $20 million that may have been obtained in the Change Healthcare attack. Continue Reading
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News
05 Mar 2024
Critical JetBrains TeamCity vulnerabilities under attack
Exploitation activity has started against two vulnerabilities in JetBrains TeamCity, which has been targeted previously by nation-state threat actors such as Russia's Cozy Bear. Continue Reading
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News
05 Mar 2024
Inside an Alphv/BlackCat ransomware attack
Sygnia researchers investigated an intrusion in a client's network and discovered an Alphv/BlackCat ransomware actor had been lurking in the environment for weeks. Continue Reading
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Tip
05 Mar 2024
DoS vs. DDoS: How they differ and the damage they cause
DoS and DDoS attacks may not be new, but that doesn't mean they are any less disruptive to organizations. Companies should understand what they are and how they work. Continue Reading
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Feature
04 Mar 2024
Infosec pros weigh in on proposed ransomware payment bans
Whether for or against a payment ban, security professionals are concerned regulations could negatively affect victims and result in fewer incident disclosures. Continue Reading
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News
04 Mar 2024
LockBit, Alphv/BlackCat highlight February ransomware activity
With events surrounding the LockBit and Alphv/BlackCat gangs and the ConnectWise ScreenConnect flaws, ransomware activity continues this year after a surge in 2023. Continue Reading
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News
29 Feb 2024
CISA warns Ivanti ICT ineffective for detecting compromises
CISA observed ongoing exploitation against four Ivanti vulnerabilities and found problems with the vendor's Integrity Checker Tool, which is designed to detect compromises. Continue Reading
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News
28 Feb 2024
Alphv/BlackCat attacking hospitals following FBI takedown
The ransomware attacks against hospitals and the healthcare sector come after law enforcement agencies, led by the FBI, disrupted Alphv/BlackCat's network in December. Continue Reading
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Podcast
27 Feb 2024
Risk & Repeat: LockBit resurfaces after takedown
LockBit returns just days after an international law enforcement operation infiltrated the ransomware gang's network and seized infrastructure, source code and decryption keys. Continue Reading
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News
27 Feb 2024
Ransomware gangs exploiting ConnectWise ScreenConnect flaws
Ransomware activity is ramping up against vulnerable ScreenConnect systems as Black Basta and Bl00dy threat actors were observed exploiting the vulnerabilities. Continue Reading
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News
26 Feb 2024
LockBit restores servers following law enforcement takedown
Law enforcement agencies last week announced a takedown of the LockBit ransomware gang that involved the seizure of servers, websites and decryption keys, as well as two arrests. Continue Reading
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News
26 Feb 2024
CISA: APT29 targeting cloud accounts for initial access
U.K. and U.S. government agencies have observed the Russian nation-state group increasingly target dormant and inactive cloud service accounts to gain initial access. Continue Reading
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News
22 Feb 2024
ConnectWise ScreenConnect flaws under attack, patch now
Huntress said in a blog post this week that the ConnectWise ScreenConnect flaws, which have come under attack, were 'trivial and embarrassingly easy' for a threat actor to exploit. Continue Reading
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News
21 Feb 2024
Coalition: Vulnerability scoring systems falling short
Coalition said enterprises faced more substantial fallout from attacks on Citrix Bleed and Progress Software's MoveIt Transfer due to inadequate vulnerability prioritization. Continue Reading
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News
21 Feb 2024
CrowdStrike 'Global Threat Report': Cloud intrusions up 75%
This year's report covered cloud intrusions, data extortion attacks, and the ongoing conflict between Israel and Hamas. Continue Reading
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News
20 Feb 2024
Operation Cronos dismantles LockBit ransomware gang
An international law enforcement operation led by the U.K.'s National Crime Agency seizes LockBit's websites, servers, source code and decryption keys. Continue Reading
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News
15 Feb 2024
Ransomware disrupts utilities, infrastructure in January
Ransomware attacks last month caused outages and disruptions at public sector and critical infrastructure organizations as well as a major financial services firm. Continue Reading
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News
15 Feb 2024
Eclypsium: Ivanti firmware has 'plethora' of security issues
In its firmware analysis, Eclypsium found that the Ivanti Pulse Secure appliance used a version of Linux that was more than a decade old and several years past end of life. Continue Reading
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News
14 Feb 2024
Microsoft, OpenAI warn nation-state hackers are abusing LLMs
Microsoft and OpenAI observed five nation-state threat groups leveraging generative AI and large language models for social engineering, vulnerability research and other tasks. Continue Reading
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News
13 Feb 2024
Iranian cyberattacks targeting U.S. and Israeli entities
Google said Tuesday that state-backed Iranian actors targeted the U.S. and Israel consistently in the years prior to the start of the Israel-Hamas war as well as the months after. Continue Reading
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News
13 Feb 2024
Proofpoint: 'Hundreds' of Azure accounts compromised
Proofpoint researchers found that the attackers manipulated the MFA of compromised accounts, registering their own methods to maintain persistent access. Continue Reading
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News
12 Feb 2024
CISA warns Fortinet zero-day vulnerability under attack
CISA alerted federal agencies that a critical zero-day vulnerability in FortiOS is being actively exploited, though Fortinet has yet to confirm reports. Continue Reading
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Definition
09 Feb 2024
cyberterrorism
Cyberterrorism is usually defined as any premeditated, politically motivated attack against information systems, programs, and data that threatens violence or results in violence. Continue Reading
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News
08 Feb 2024
NCC Group records the most ransomware victims ever in 2023
Enterprises faced an alarming number of ransomware attacks as gangs targeted supply chains and took advantage of zero-day vulnerabilities and organizations' patching struggles. Continue Reading
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News
07 Feb 2024
CISA: Volt Typhoon had access to some U.S. targets for 5 years
A joint cybersecurity advisory expanded on the Volt Typhoon threat Wednesday, confirming attackers maintained prolonged persistent access to critical infrastructure targets. Continue Reading
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News
07 Feb 2024
Chainalysis: 2023 a 'watershed' year for ransomware
Chainalysis said ransomware payments ballooned to reach $1.1 billion in 2023, marking a complete reversal from the decline in ransomware payments seen the year prior. Continue Reading
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Definition
07 Feb 2024
keylogger (keystroke logger or system monitor)
A keylogger, sometimes called a keystroke logger, is a type of surveillance technology used to monitor and record each keystroke on a specific device, such as a computer or smartphone. Continue Reading
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News
06 Feb 2024
Google: Spyware vendors are driving zero-day exploitation
Google's Threat Analysis Group urged further government action against commercial surveillance vendors that let customers abuse spyware products with impunity. Continue Reading
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Definition
06 Feb 2024
dictionary attack
A dictionary attack is a method of breaking into a password-protected computer, network or other IT resource by systematically entering every word in a dictionary, or word list, as a password. Continue Reading
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News
05 Feb 2024
AnyDesk hacked, details unclear
Of the hack, AnyDesk said it found 'no evidence that any end-user devices have been affected.' But researchers said they saw AnyDesk customer credentials for sale on the dark web. Continue Reading
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News
01 Feb 2024
Critical infrastructure hacks raise alarms on Chinese threats
FBI Director Christopher Wray and CISA Director Jen Easterly warned that China was targeting critical infrastructure for possible destructive attacks in the event of a conflict with the United States. Continue Reading
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News
01 Feb 2024
CISA deputy director touts progress, anti-ransomware efforts
In this Q&A, CISA Deputy Director Nitin Natarajan shares his thoughts on scaling up to meet high demand, the agency's new initiative to address ransomware and more. Continue Reading
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News
30 Jan 2024
Corvus: 2023 was a 'record-breaking' ransomware year
The insurance company analyzed claims data and ransomware gangs' data leak sites, which suggests as many as 7,600 organizations across the globe were attacked in 2023. Continue Reading
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News
29 Jan 2024
Citizen Lab details ongoing battle against spyware vendors
At the SANS Cyber Threat Intelligence Summit, Citizen Lab researcher Bill Marczak discusses spyware proliferation from commercial vendors such as NSO Group, Cytrox and Quadream. 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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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