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“Welcome to the CISTCK Group Cybersecurity Blog! Dive into the dynamic world of cybersecurity with our expert insights, thought-provoking articles, and the latest developments in the field. Our blog is your go-to resource for staying ahead in the ever-evolving landscape of cyber threats. Explore topics ranging from threat intelligence and risk management to industry best practices and emerging technologies. Whether you’re a cybersecurity professional, IT enthusiast, or simply interested in safeguarding digital landscapes, join us on a journey of knowledge-sharing and discover actionable strategies to fortify your defenses. Stay informed, stay secure with the CISTCK Group Cybersecurity Blog.”
ToyMaker Uses LAGTOY to Sell Access to CACTUS Ransomware Gangs for Double Extortion
Cybersecurity researchers have detailed the activities of an initial access broker (IAB) dubbed ToyMaker that has been observed handing over access to double extortion ransomware gangs like CACTUS. The IAB has been assessed with medium confidence to be a financially...
North Korean Hackers Spread Malware via Fake Crypto Firms and Job Interview Lures
North Korea-linked threat actors behind the Contagious Interview have set up front companies as a way to distribute malware during the fake hiring process. "In this new campaign, the threat actor group is using three front companies in the cryptocurrency consulting...
SAP Confirms Critical NetWeaver Flaw Amid Suspected Zero-Day Exploitation by Hackers
Threat actors are likely exploiting a new vulnerability in SAP NetWeaver to upload JSP web shells with the goal of facilitating unauthorized file uploads and code execution. "The exploitation is likely tied to either a previously disclosed vulnerability like...
Why NHIs Are Security’s Most Dangerous Blind Spot
When we talk about identity in cybersecurity, most people think of usernames, passwords, and the occasional MFA prompt. But lurking beneath the surface is a growing threat that does not involve human credentials at all, as we witness the exponential growth of...
Researchers Identify Rack::Static Vulnerability Enabling Data Breaches in Ruby Servers
Cybersecurity researchers have disclosed three security flaws in the Rack Ruby web server interface that, if successfully exploited, could enable attackers to gain unauthorized access to files, inject malicious data, and tamper with logs under certain conditions. The...
DslogdRAT Malware Deployed via Ivanti ICS Zero-Day CVE-2025-0282 in Japan Attacks
Cybersecurity researchers are warning about a new malware called DslogdRAT that's installed following the exploitation of a now-patched security flaw in Ivanti Connect Secure (ICS). The malware, along with a web shell, were "installed by exploiting a zero-day...
Lazarus Hits 6 South Korean Firms via Cross EX, Innorix Zero-Day and ThreatNeedle Malware
At least six organizations in South Korea have been targeted by the prolific North Korea-linked Lazarus Group as part of a campaign dubbed Operation SyncHole. The activity targeted South Korea's software, IT, financial, semiconductor manufacturing, and...
Linux io_uring PoC Rootkit Bypasses System Call-Based Threat Detection Tools
Cybersecurity researchers have demonstrated a proof-of-concept (PoC) rootkit dubbed Curing that leverages a Linux asynchronous I/O mechanism called io_uring to bypass traditional system call monitoring. This causes a "major blind spot in Linux runtime security tools,"...
159 CVEs Exploited in Q1 2025 — 28.3% Within 24 Hours of Disclosure
As many as 159 CVE identifiers have been flagged as exploited in the wild in the first quarter of 2025, up from 151 in Q4 2024. "We continue to see vulnerabilities being exploited at a fast pace with 28.3% of vulnerabilities being exploited within 1-day of their CVE...
Darcula Adds GenAI to Phishing Toolkit, Lowering the Barrier for Cybercriminals
The threat actors behind the Darcula phishing-as-a-service (PhaaS) platform have released new updates to their cybercrime suite with generative artificial intelligence (GenAI) capabilities. "This addition lowers the technical barrier for creating phishing pages,...