How cyberattackers exploit domain controllers using ransomware

In recent years, human-operated cyberattacks have undergone a dramatic transformation. These attacks, once characterized by sporadic and opportunistic attacks, have evolved into highly sophisticated, targeted campaigns aimed at causing maximum damage to organizations, with the average cost of a...

PipeMagic Trojan Exploits Windows Zero-Day Vulnerability to Deploy Ransomware

Microsoft has revealed that a now-patched security flaw impacting the Windows Common Log File System CLFS was exploited as a zero-day in ransomware attacks aimed at a small number of targets. "The targets include organizations in the information technology IT and real estate sectors of the United...

Exploitation of CLFS zero-day leads to ransomware activity

Microsoft Threat Intelligence Center MSTIC and Microsoft Security Response Center MSRC have discovered post-compromise exploitation of a zero-day elevation of privilege vulnerability in the Windows Common Log File System CLFS against a small number of targets. The targets include organizations in...

Warning over free online file converters that actually install malware

The FBI Denver Field Office has warned of an increasing number of scammy websites offering free online file converter services. Instead of converting files, the tools actually load malware onto victims’ computers. The FBI warned specifically about that malware leading to ransomware attacks, but...

SANS Institute Warns of Novel Cloud-Native Ransomware Attacks

The latest Palo Alto Networks Unit 42 Cloud Threat Report found that sensitive data is found in 66% of cloud storage buckets. This data is vulnerable to ransomware attacks. The SANS Institute recently reported that these attacks can be performed by abusing the cloud provider's storage security...

Ransomware Hits Record High: 126% Surge in Attacks in February 2025

February 2025 saw a record 126% surge in ransomware attacks, with Cl0p leading the charge. Hackers exploited file…...

⚡ THN Weekly Recap: New Attacks, Old Tricks, Bigger Impact

Cyber threats today don't just evolve—they mutate rapidly, testing the resilience of everything from global financial systems to critical infrastructure. As cybersecurity confronts new battlegrounds—ranging from nation-state espionage and ransomware to manipulated AI chatbots—the landscape become...

Hackers Exploit Paragon Partition Manager Driver Vulnerability in Ransomware Attacks

Threat actors have been exploiting a security vulnerability in Paragon Partition Manager's BioNTdrv.sys driver in ransomware attacks to escalate privileges and execute arbitrary code. The zero-day flaw CVE-2025-0289 is part of a set of five vulnerabilities that was discovered by Microsoft,...

The New Ransomware Groups Shaking Up 2025

In 2024, global ransomware attacks hit 5,414, an 11% increase from 2023. After a slow start, attacks spiked in Q2 and surged in Q4, with 1,827 incidents 33% of the year's total. Law enforcement actions against major groups like LockBit caused fragmentation, leading to more competition and a rise ...

PT-2025-9181

Name of the Vulnerable Software and Affected Versions Paragon Partition Manager version 17 Paragon Partition Manager versions prior to 2.0.0 Description The issue is related to an insecure kernel resource access vulnerability in the BioNTdrv.sys driver, which can be exploited to compromise the...

China-Linked Attackers Exploit Check Point Flaw to Deploy ShadowPad and Ransomware

A previously unknown threat activity cluster targeted European organizations, particularly those in the healthcare sector, to deploy PlugX and its successor, ShadowPad, with the intrusions ultimately leading to deployment of a ransomware called NailaoLocker in some cases. The campaign, codenamed...

Hackers Exploiting SimpleHelp RMM Flaws for Persistent Access and Ransomware

Threat actors have been observed exploiting recently disclosed security flaws in SimpleHelp's Remote Monitoring and Management RMM software as a precursor for what appears to be a ransomware attack. The intrusion leveraged the now-patched vulnerabilities to gain initial access and maintain...

One policy to rule them all

Windows group policies are a powerful management tool that allows administrators to define and control user and computer settings within a domain environment in a centralized manner. While group policies offer functionality and utility, they are unfortunately a prime target for attackers. In...

PT-2025-1272

Name of the Vulnerable Software and Affected Versions SimpleHelp remote support software versions 5.5.7 and before Description The issue allows low-privileges technicians to create API keys with excessive permissions, which can be used to escalate privileges to the server admin role. Attackers ca...

Ransomware on ESXi: The Mechanization of Virtualized Attacks

In 2024, ransomware attacks targeting VMware ESXi servers reached alarming levels, with the average ransom demand skyrocketing to $5 million. With approximately 8,000 ESXi hosts exposed directly to the internet according to Shodan, the operational and business impact of these attacks is profound...

Cybersecurity Risks in Crypto: Phishing, Ransomware and Other Emerging Threats

Explore top cybersecurity risks in crypto, including phishing, ransomware, and MitM attacks. Learn practical tips to safeguard your…...

US Sanctions Chinese Cybersecurity Firm for Firewall Exploit, Ransomware Attacks

SUMMARY The United States has taken strong action against a Chinese cybersecurity company, Sichuan Silence Information Technology, for…...

ZLoader Malware Returns With DNS Tunneling to Stealthily Mask C2 Comms

Cybersecurity researchers have discovered a new version of the ZLoader malware that employs a Domain Name System DNS tunnel for command-and-control C2 communications, indicating that the threat actors are continuing to refine the tool after resurfacing a year ago. "Zloader 2.9.4.0 adds notable...

Conquering the Complexities of Modern BCDR

The modern business landscape is thrilling yet daunting. Rapidly evolving technology, persistent cyberthreats and escalating operational complexities make data protection and seamless business continuity challenging for businesses of all sizes. Your organization needs robust security measures tha...

Kaspersky Security Bulletin 2024. Statistics

All statistics in this report come from Kaspersky Security Network KSN, a global cloud service that receives information from components in our security solutions voluntarily provided by Kaspersky users. Millions of Kaspersky users around the globe assist us in collecting information about...