threat actors

ESET Research has uncovered a previously undocumented threat actor it calls GhostRedirector, which in June 2025 was found to have compromised at least 65 Windows servers across multiple countries and deployed two custom tools — a C++ backdoor named Rungan and a native IIS module named Gamshen...

CVE-2025-53740 — Microsoft Office “use‑after‑free” (local code execution) An in‑depth feature for security teams, admins and threat hunters Summary (tl;dr) CVE-2025-53740 is reported by Microsoft as a use‑after‑free (CWE‑416) memory‑corruption flaw in Microsoft Office that can allow an attacker...

Threat actors have escalated their tactics by exploiting the Microsoft 365 Direct Send feature, fundamentally altering the landscape of email-based cyber attacks. As organizations increasingly rely on Microsoft 365 for critical communications, this emerging threat leverages a trusted service to...

A chilling new chapter in the landscape of enterprise IT security has unfolded as cybersecurity researchers reveal that a wide-reaching attack on Microsoft’s SharePoint server software may stem from a single, determined threat actor. The world’s eyes turn yet again to the battle between...

Visual Studio Code continues to stand at the forefront of code editors, serving millions of developers globally with its flexibility, open-source nature, and strong ecosystem of extensions. However, its popularity and reach make it a prime target for security researchers and threat actors alike...

Threat actors are increasingly leveraging vulnerabilities in both Windows and Linux server environments to deploy web shells and sophisticated malware, perpetuating an alarming trend in the threat landscape that puts organizational networks at heightened risk. Over the past several months...

In a sobering development for the cloud security landscape, new research has exposed how Microsoft 365’s Direct Send feature—a tool primarily designed for seamless internal communication—has become a significant vector for phishing attacks. As organizations of all sizes deepen their reliance on...

June 2025's Patch Tuesday brought a sense of urgency back to the Windows security community, as Microsoft addressed a suite of 67 new vulnerabilities—among them, two zero-day exploits and multiple high-profile threats targeting legacy protocols and modern productivity tools. As enterprises and...

June’s Patch Tuesday has become a pivotal moment for Windows system administrators, threat researchers, and IT professionals alike. Microsoft’s June 2025 security update underlines why: it delivers patches for a total of 67 vulnerabilities, including two actively exploited zero-days and eight...

Every cyber incident headline seems to ping-pong between shifting brands: Cozy Bear, Midnight Blizzard, APT29, UNC2452, Voodoo Bear—names that sound like the roll call from a hacker-themed comic, not the carefully curated codenames for state-sponsored threat actors plaguing the digital world. If...

In the complex arena of cybersecurity, few challenges have hindered swift threat intelligence sharing as much as the long-standing inconsistency in threat actor naming conventions. Security professionals, from incident responders to CISOs, have faced moments of hesitation and confusion when...

The rapid evolution of cybercrime has brought forth a new era of sophisticated phishing operations, with attackers now leveraging complex “Phishing-as-a-Service” (PhaaS) platforms to target lucrative enterprise networks. One such operation, identified in research as Storm-1575 and more widely...

In the ever-evolving landscape of cybersecurity threats, Pure Crypter has emerged as a formidable malware-as-a-service (MaaS) loader, adept at circumventing the latest security enhancements in Windows 11 24H2. This sophisticated tool has become a linchpin for threat actors deploying information...

The emergence of Void Blizzard—a newly identified, Russian-affiliated threat actor—has sent ripples of concern through cybersecurity communities, government agencies, and critical infrastructure operators worldwide. According to detailed findings published by Microsoft Threat Intelligence, Void...

When a critical vulnerability like CVE-2025-29963 surfaces―one that exposes millions of Windows systems to remote code execution through a component as ubiquitous as Windows Media―the stakes are high for enterprises, small businesses, and home users alike. Microsoft’s security bulletin...

Industrial Control System (ICS) advisories released by authoritative agencies such as CISA (the Cybersecurity and Infrastructure Security Agency) continue to shape the global conversation on critical infrastructure security. The latest burst of advisories—including the recently referenced but...

Microsoft's March 2025 Patch Tuesday brought an extensive lineup of bug fixes, but among these was a vulnerability that would quickly escalate into a significant security incident: CVE-2025-24054, an NTLM hash-leaking flaw. While Microsoft initially considered this vulnerability "less likely" to...

In a fast-evolving digital threat landscape, even the most fundamental and trusted layers of operating system architecture can become primary targets. This reality has been thrust into the spotlight yet again by the discovery and subsequent analysis of the Windows Update Stack...

In a dramatic reminder of the relentless nature of cyber threats targeting the Windows ecosystem, the March 2025 Patch Tuesday disclosures have thrust a lingering zero-day vulnerability into the spotlight. Marked as CVE-2025-24983, this use-after-free flaw in the storied Win32 kernel subsystem...

Russian threat actors have once again raised the bar for cyber espionage, turning attention toward OAuth 2.0 authentication flows in Microsoft 365, hijacking accounts connected to Ukraine and human rights organizations. Their tactics, as uncovered by cybersecurity firm Volexity, fit into a...