Cyber Defense Advisors

Year: 2025

Critical Ivanti Flaw Actively Exploited to Deploy TRAILBLAZE and BRUSHFIRE Malware

Ivanti has disclosed details of a now-patched critical security vulnerability impacting its Connect Secure product that has come under active exploitation in the wild. The vulnerability, tracked as CVE-2025-22457 (CVSS score: 9.0), concerns a case of a stack-based buffer overflow that could be exploited to execute arbitrary code on affected systems. “A stack-based buffer overflow […]

Cyber News

OPSEC Failure Exposes Coquettte’s Malware Campaigns on Bulletproof Hosting Servers

A novice cybercrime actor has been observed leveraging the services of a Russian bulletproof hosting (BPH) provider called Proton66 to facilitate their operations. The findings come from DomainTools, which detected the activity after it discovered a phony website named cybersecureprotect[.]com hosted on Proton66 that masqueraded as an antivirus service. The threat intelligence firm said it 

Cyber News

CERT-UA Reports Cyberattacks Targeting Ukrainian State Systems with WRECKSTEEL Malware

The Computer Emergency Response Team of Ukraine (CERT-UA) has revealed that no less than three cyber attacks were recorded against state administration bodies and critical infrastructure facilities in the country with an aim to steal sensitive data. The campaign, the agency said, involved the use of compromised email accounts to send phishing messages containing links […]

Cyber News

Critical Flaw in Apache Parquet Allows Remote Attackers to Execute Arbitrary Code

A maximum severity security vulnerability has been disclosed in Apache Parquet’s Java Library that, if successfully exploited, could allow a remote attacker to execute arbitrary code on susceptible instances. Apache Parquet is a free and open-source columnar data file format that’s designed for efficient data processing and retrieval, providing support for complex data, high-performance 

Cyber News

Microsoft Warns of Tax-Themed Email Attacks Using PDFs and QR Codes to Deliver Malware

Microsoft is warning of several phishing campaigns that are leveraging tax-related themes to deploy malware and steal credentials. “These campaigns notably use redirection methods such as URL shorteners and QR codes contained in malicious attachments and abuse legitimate services like file-hosting services and business profile pages to avoid detection,” Microsoft said in a report shared […]

Cyber News

HellCat ransomware: what you need to know

HellCat – the ransomware gang that has been known to demand payment… in baguettes! Are they rolling in the dough? Bread it and weep in my article on the Tripwire State of Security blog. 

Cyber News

Lazarus Group Targets Job Seekers With ClickFix Tactic to Deploy GolangGhost Malware

The North Korean threat actors behind Contagious Interview have adopted the increasingly popular ClickFix social engineering tactic to lure job seekers in the cryptocurrency sector to deliver a previously undocumented Go-based backdoor called GolangGhost on Windows and macOS systems. The new activity, assessed to be a continuation of the campaign, has been codenamed ClickFake Interview […]

Cyber News

AI Threats Are Evolving Fast — Learn Practical Defense Tactics in this Expert Webinar

The rules have changed. Again. Artificial intelligence is bringing powerful new tools to businesses. But it’s also giving cybercriminals smarter ways to attack. They’re moving quicker, targeting more precisely, and slipping past old defenses without being noticed. And here’s the harsh truth: If your security strategy hasn’t evolved with AI in mind, you’re already behind. […]

Cyber News

Web 3.0 Requires Data Integrity

If you’ve ever taken a computer security class, you’ve probably learned about the three legs of computer security—confidentiality, integrity, and availability—known as the CIA triad. When we talk about a system being secure, that’s what we’re referring to. All are important, but to different degrees in different contexts. In a world populated by artificial intelligence (AI) systems […]

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