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RansomHub Went Dark April 1; Affiliates Fled to Qilin, DragonForce Claimed Control

RansomHub Went Dark April 1; Affiliates Fled to Qilin, DragonForce Claimed Control

Apr 30, 2025 Cybercrime / Threat Intelligence
Cybersecurity researchers have revealed that RansomHub 's online infrastructure has "inexplicably" gone offline as of April 1, 2025, prompting concerns among affiliates of the ransomware-as-a-service (RaaS) operation. Singaporean cybersecurity company Group-IB said that this may have caused affiliates to migrate to Qilin, given that "disclosures on its DLS [data leak site] have doubled since February."  RansomHub, which first emerged in February 2024, is estimated to have stolen data from over 200 victims. It replaced two high-profile RaaS groups, LockBit and BlackCat, to become a frontrunner, courting their affiliates, including Scattered Spider and Evil Corp , with lucrative payment splits. "Following a possible acquisition of the web application and ransomware source code of Knight (formerly Cyclops), RansomHub quickly rose in the ransomware scene, thanks to the dynamic features of its multi-platform encryptor and an aggressive, affiliate-friendly ...
Automating Zero Trust in Healthcare: From Risk Scoring to Dynamic Policy Enforcement Without Network Redesign

Automating Zero Trust in Healthcare: From Risk Scoring to Dynamic Policy Enforcement Without Network Redesign

Apr 24, 2025 IoT Security / Zero Trust
The Evolving Healthcare Cybersecurity Landscape   Healthcare organizations face unprecedented cybersecurity challenges in 2025. With operational technology (OT) environments increasingly targeted and the convergence of IT and medical systems creating an expanded attack surface, traditional security approaches are proving inadequate. According to recent statistics, the healthcare sector experienced a record-breaking year for data breaches in 2024, with over 133 million patient records exposed. The average cost of a healthcare data breach has now reached $11 million, making it the most expensive industry for breaches.  What's changed dramatically is the focus of attackers. No longer content with merely extracting patient records, cybercriminals are now targeting the actual devices that deliver patient care. The stakes have never been higher, with ransomware now representing 71% of all attacks against healthcare organizations and causing an average downtime of 11 days per inc...
Blockchain Offers Security Benefits – But Don't Neglect Your Passwords

Blockchain Offers Security Benefits – But Don't Neglect Your Passwords

Apr 17, 2025 Password Security / Blockchain
Blockchain is best known for its use in cryptocurrencies like Bitcoin, but it also holds significant applications for online authentication. As businesses in varying sectors increasingly embrace blockchain-based security tools, could the technology one day replace passwords? How blockchain works  Blockchain is a secure way to maintain, encrypt, and exchange digital records of transactions. Its security benefits stem from its decentralized nature: this distributed ledger can be accessed by participants across various nodes , and is unalterable. All users retain control as a group, meaning no single person can change the ledger. How could this provide security benefits? One advantage is the ability to create a 'self-sovereign ID' that alters the way that a user identifies themselves online. Essentially, it creates a private ID for a user that they control, rather than relying on a centralized institution : they can logon to a particular website or service using their identity on...
cyber security

New Webinar: Defend Against Scattered Spider's Latest TTPs for 2025

websitePush SecurityThreat Intelligence / Cyber Attack
Learn about Scattered Spider's latest identity attack techniques and how to defend your organization.
cyber security

Get Proactive About Protecting Your Digital Identity 

websiteVeeam SoftwareData Security / Microsoft Entra ID
Security threats are just one reason you need to protect Microsoft Entra ID data. Learn all 6 reasons today.
From Third-Party Vendors to U.S. Tariffs: The New Cyber Risks Facing Supply Chains

From Third-Party Vendors to U.S. Tariffs: The New Cyber Risks Facing Supply Chains

Apr 16, 2025 Artificial Intelligence / Software Security
Introduction Cyber threats targeting supply chains have become a growing concern for businesses across industries. As companies continue to expand their reliance on third-party vendors, cloud-based services, and global logistics networks, cybercriminals are exploiting vulnerabilities within these interconnected systems to launch attacks. By first infiltrating a third-party vendor with undetected security gaps, attackers can establish a foothold, leveraging these weaknesses to penetrate the primary business partners' network. From there, they move laterally through critical systems, ultimately gaining access to sensitive data, financial assets, intellectual property, or even operational controls. Recent high-profile breaches like the 2024 ransomware attack that hit Change Healthcare, one of the world's largest health payment processing companies, demonstrate how attackers disrupted supply chain operations stealing up to 6TB of millions of patients' protected health information (PHI)....
ResolverRAT Campaign Targets Healthcare, Pharma via Phishing and DLL Side-Loading

ResolverRAT Campaign Targets Healthcare, Pharma via Phishing and DLL Side-Loading

Apr 14, 2025 Malware / Cybercrime
Cybersecurity researchers have discovered a new, sophisticated remote access trojan called ResolverRAT that has been observed in attacks targeting healthcare and pharmaceutical sectors. "The threat actor leverages fear-based lures delivered via phishing emails, designed to pressure recipients into clicking a malicious link," Morphisec Labs researcher Nadav Lorber said in a report shared with The Hacker News. "Once accessed, the link directs the user to download and open a file that triggers the ResolverRAT execution chain." The activity, observed as recently as March 10, 2025, shares infrastructure and delivery mechanism overlap with phishing campaigns that have distributed information stealer malware such as Lumma and Rhadamanthys, as documented by Cisco Talos and Check Point last year. A notable aspect of the campaign is the use of localized phishing lures, with the emails crafted in the languages predominantly spoken in the targeted countries. This includ...
Ballista Botnet Exploits Unpatched TP-Link Vulnerability, Targets Over 6,000 Devices

Ballista Botnet Exploits Unpatched TP-Link Vulnerability, Targets Over 6,000 Devices

Mar 11, 2025 Network Security / Vulnerability
Unpatched TP-Link Archer routers have become the target of a new botnet campaign dubbed Ballista, according to new findings from the Cato CTRL team. "The botnet exploits a remote code execution (RCE) vulnerability in TP-Link Archer routers (CVE-2023-1389) to spread itself automatically over the Internet," security researchers Ofek Vardi and Matan Mittelman said in a technical report shared with The Hacker News. CVE-2023-1389 is a high-severity security flaw impacting TP-Link Archer AX-21 routers that could lead to command injection, which could then pave the way for remote code execution. The earliest evidence of active exploitation of the flaw dates back to April 2023, with unidentified threat actors using it to drop Mirai botnet malware. Since then, it has also been abused to propagate other malware families like Condi and AndroxGh0st . Cato CTRL said it detected the Ballista campaign on January 10, 2025. The most recent exploitation attempt was recorded on Februa...
CISA and FDA Warn of Critical Backdoor in Contec CMS8000 Patient Monitors

CISA and FDA Warn of Critical Backdoor in Contec CMS8000 Patient Monitors

Jan 31, 2025 Vulnerability / Healthcare
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) and the Food and Drug Administration (FDA) have issued alerts about the presence of hidden functionality in Contec CMS8000 patient monitors and Epsimed MN-120 patient monitors. The vulnerability , tracked as CVE-2025-0626 , carries a CVSS v4 score of 7.7 on a scale of 10.0. The flaw, alongside two other issues, was reported to CISA by an anonymous external researcher. "The affected product sends out remote access requests to a hard-coded IP address, bypassing existing device network settings to do so," CISA said in an advisory. "This could serve as a backdoor and lead to a malicious actor being able to upload and overwrite files on the device." "The reverse backdoor provides automated connectivity to a hard-coded IP address from the Contec CMS8000 devices, allowing the device to download and execute unverified remote files. Publicly available records show that the IP address is not associa...
How Interlock Ransomware Infects Healthcare Organizations

How Interlock Ransomware Infects Healthcare Organizations

Jan 29, 2025 Incident Response / Threat Intelligence
Ransomware attacks have reached an unprecedented scale in the healthcare sector, exposing vulnerabilities that put millions at risk. Recently, UnitedHealth revealed that 190 million Americans had their personal and healthcare data stolen during the Change Healthcare ransomware attack, a figure that nearly doubles the previously disclosed total.  This breach shows just how deeply ransomware can infiltrate critical systems, leaving patient trust and care hanging in the balance. One of the groups that targets this already fragile sector is the Interlock ransomware group. Known for their calculated and sophisticated attacks, they focus on hospitals, clinics, and other medical service providers. Interlock Ransomware Group: An Active Threat to Healthcare The Interlock ransomware group is a relatively recent but dangerous player in the world of cybercrime, known for employing double-extortion tactics.  This method involves encrypting a victim's data to disrupt operations and th...
Beware: Fake CAPTCHA Campaign Spreads Lumma Stealer in Multi-Industry Attacks

Beware: Fake CAPTCHA Campaign Spreads Lumma Stealer in Multi-Industry Attacks

Jan 23, 2025 Phishing / Malware
Cybersecurity researchers are calling attention to a new malware campaign that leverages fake CAPTCHA verification checks to deliver the infamous Lumma information stealer. "The campaign is global, with Netskope Threat Labs tracking victims targeted in Argentina, Colombia, the United States, the Philippines, and other countries around the world," Leandro Fróes, senior threat research engineer at Netskope Threat Labs, said in a report shared with The Hacker News. "The campaign also spans multiple industries, including healthcare, banking, and marketing, with the telecom industry having the highest number of organizations targeted." The attack chain begins when a victim visits a compromised website, which directs them to a bogus CAPTCHA page that specifically instructs the site visitor to copy and paste a command into the Run prompt in Windows that uses the native mshta.exe binary to download and execute an HTA file from a remote server. It's worth noting...
New HIPAA Rules Mandate 72-Hour Data Restoration and Annual Compliance Audits

New HIPAA Rules Mandate 72-Hour Data Restoration and Annual Compliance Audits

Dec 30, 2025 Cybersecurity / Compliance
The United States Department of Health and Human Services' (HHS) Office for Civil Rights (OCR) has proposed new cybersecurity requirements for healthcare organizations with an aim to safeguard patients' data against potential cyber attacks. The proposal, which seeks to modify the Health Insurance Portability and Accountability Act (HIPAA) of 1996, is part of a broader initiative to bolster the cybersecurity of critical infrastructure, the OCR said. The rule is designed to strengthen protections for electronic protected health information (ePHI) by updating the HIPAA Security Rule's standards to "better address ever-increasing cybersecurity threats to the healthcare sector." To that end, the proposal, among other things, requires organizations to conduct a review of the technology asset inventory and network map, identify potential vulnerabilities that could pose a threat to electronic information systems, and establish procedures to restore the loss of certa...
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