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Hackers Use Fake Windows Update Installers to Deliver OnyxC2 Credential Stealer
Winsage
June 12, 2026

Hackers Use Fake Windows Update Installers to Deliver OnyxC2 Credential Stealer

OnyxC2 is a sophisticated credential stealer available for a subscription fee of 0 per month, distributed through disguised lures such as fake Windows updates and legitimate software installers. It functions as a commercial product with features like an automated payload builder, tiered licensing, and a centralized web dashboard. The malware boasts a 99% detection-evasion rate, successfully evading major antivirus solutions during tests. It is developed in C++, utilizing direct system calls and mutating with each build to avoid detection. OnyxC2 collects data from around 210 applications, targeting 45 web browsers, password managers, cryptocurrency wallets, and FTP clients. The malware is delivered using DLL sideloading, where a password-protected archive contains a legitimate application and a malicious DLL. The attacker's DLL is disguised by inflating its size and is loaded by a trusted binary. The malicious code remains encrypted on disk and decrypts in memory to evade analysis. OnyxC2 communicates with a Cloudflare-fronted command-and-control server to manage infected hosts and execute commands like hardware registration and cookie uploads. The threat extends to business environments, targeting FTP and email clients, with stolen session cookies allowing ongoing access to corporate infrastructure. Implementing anti-data exfiltration controls is recommended as a mitigation strategy.
9 Best Antivirus Software On G2: My Top Picks
Tech Optimizer
June 11, 2026

9 Best Antivirus Software On G2: My Top Picks

Antivirus software can become overwhelming for organizations due to alert fatigue shortly after deployment. Analysts often struggle to prioritize notifications, leading to the mismanagement of legitimate tools and unclear incident timelines. A review of nine antivirus solutions based on G2's Winter 2026 Grid® Report identified the following top performers: 1. ESET PROTECT: Best for machine learning-driven endpoint protection; offers enterprise-grade security with a free trial available. 2. Sophos Endpoint: Best for ransomware prevention; provides centralized policy control with a free trial available. 3. ThreatDown: Cost-effective EDR with MDR flexibility; combines antivirus and endpoint detection with a free trial available. 4. CrowdStrike Falcon: Best for large-scale enterprise threat prevention; cloud-native platform with subscription-based pricing and a free trial available. 5. Check Point Harmony Endpoint: Best for unified endpoint and zero-trust protection; integrates malware prevention and phishing defense with a free trial available. 6. Microsoft Defender for Endpoint: Best for Microsoft-native environments; deeply integrated with Microsoft 365, licensed through enterprise agreements. 7. Kaspersky AntiVirus: Best for traditional malware protection; provides real-time protection against various threats. 8. SentinelOne: Best for autonomous AI-driven endpoint response; features automated remediation and ransomware rollback with a free trial available. 9. FortiClient: Best for Fortinet-centric environments; offers VPN access and security policy enforcement with a free basic client available. The analysis highlighted that effective antivirus solutions prioritize behavioral analysis over traditional signature-based detection, minimize false positives, and maintain low system impact during operation. Key factors for evaluating antivirus software include threat detection accuracy, centralized visibility, response capabilities, and deployment stability.
Microsoft Defender Zero-Day Vulnerabilities RedSun and UnDefend Actively Exploited on Windows 10, 11, and Server (April 2026 CVE Analysis)
Winsage
May 21, 2026

Microsoft Defender Zero-Day Vulnerabilities RedSun and UnDefend Actively Exploited on Windows 10, 11, and Server (April 2026 CVE Analysis)

In April 2026, two zero-day vulnerabilities, RedSun and UnDefend, were discovered in Microsoft Defender, affecting Windows 10, Windows 11, and Windows Server platforms. These vulnerabilities allow attackers to escalate privileges to SYSTEM and bypass Defender’s protections. RedSun exploits a flaw in Defender's remediation process, enabling low-privileged users to overwrite critical system files. UnDefend allows attackers to disrupt Defender’s updates, keeping it outdated and ineffective. Both vulnerabilities are actively being exploited, with attackers leveraging them to gain persistent access and deploy ransomware. The primary targets are organizations using Windows systems with Defender enabled, particularly in sectors like finance, healthcare, and government. Mitigation strategies include applying updates for related vulnerabilities, monitoring for suspicious activities, and implementing additional security measures.
MSHTA abuse helps malware hide in Windows processes
Winsage
May 20, 2026

MSHTA abuse helps malware hide in Windows processes

Bitdefender's research highlights the use of Microsoft's MSHTA utility in malware attacks, noting its default activation in Windows systems. Cybercriminals exploit MSHTA to execute malicious scripts under the guise of legitimate processes, linking it to various malware families like LummaStealer and PurpleFox. The study reports a rise in MSHTA-related detections, indicating a shift towards "living-off-the-land" tactics that utilize legitimate tools to evade security alerts. Social engineering is identified as a common entry point for attacks, employing deceptive methods such as fake software downloads and phishing links. MSHTA can retrieve and execute additional payloads through multi-stage chains, complicating detection efforts. The attacks target sensitive information, including credentials and financial data, and the continued presence of MSHTA poses risks as it allows threat actors to conceal malicious actions. To mitigate these threats, organizations are advised to restrict or disable legacy scripting tools and exercise caution with untrusted downloads. The report emphasizes the challenge of detecting unusual behaviors associated with legitimate utilities in the context of cyber threats.
What Is Endpoint Detection and Response?
Tech Optimizer
May 7, 2026

What Is Endpoint Detection and Response?

Traditional endpoint security measures, such as antivirus software and firewalls, are increasingly ineffective against sophisticated cyberattacks, which can bypass these defenses. Endpoint Detection and Response (EDR) is a solution that emphasizes rapid detection and containment of threats, continuously monitoring endpoint activity and identifying suspicious behavior in real time. EDR platforms gather data from all connected endpoints and utilize AI-driven analytics to detect both known and unknown threats. In 2024, over 97 billion exploitation attempts were recorded, underscoring the need for robust endpoint protection. EDR tools operate in four stages: detection, containment, investigation, and elimination of threats. They collect telemetry data from endpoints to establish a baseline of normal activity, enabling the identification of anomalies that may indicate a threat. EDR can automatically isolate affected endpoints, terminate malicious processes, and execute remediation actions. EDR employs two methods for threat detection: comparing endpoint activity against indicators of compromise for known threats and using behavioral detection models for unknown threats. The system can generate reports on threat activity and response effectiveness, aiding compliance and operational decision-making. The telemetry data collected is stored in a centralized repository, supporting threat-hunting initiatives. Organizations that deployed EDR in 2024 experienced an average breach cost that was significantly lower than those that did not. EDR minimizes security blind spots, reduces the attack surface by identifying vulnerabilities, speeds up investigations and responses, blocks new threats through behavioral analysis, and strengthens other security measures when integrated with existing tools. Challenges in EDR implementation include alert fatigue, integration complexity, resource constraints, and limited scope. When choosing an EDR solution, organizations should prioritize features such as real-time threat detection, automated response capabilities, behavioral analysis, offline protection, low performance impact, and integration with existing tools. EDR functions effectively as part of a layered security strategy, complementing other tools like Endpoint Protection Platforms (EPP) and Extended Detection and Response (XDR). EDR focuses on endpoint activity, while EPP serves as a first line of defense against common threats, and XDR broadens the scope to include network traffic and cloud workloads. VPNs encrypt network traffic, providing an additional layer of protection for data in transit.
You shouldn't delay your Windows 11 updates, experts reveal
Winsage
May 3, 2026

You shouldn’t delay your Windows 11 updates, experts reveal

Experts advise against postponing Windows updates, as Microsoft has introduced features allowing users to control when updates occur. Users can pause updates for up to 35 days indefinitely, but delaying updates can lead to security vulnerabilities. Microsoft releases several types of updates: security updates, feature updates, quality updates, driver updates, optional updates, out-of-band updates, and zero-day updates. Zero-day updates are critical and should be installed immediately to avoid exploitation. Recent reports indicate that critical OS patching for Windows 10 and 11 is lagging by an average of 256 days, increasing the risk of cyber incidents.
Minecraft Players Targeted by LofyStealer Using Node.js Loader and In-Memory Browser Injection
AppWizard
April 30, 2026

Minecraft Players Targeted by LofyStealer Using Node.js Loader and In-Memory Browser Injection

A new infostealer malware called LofyStealer is targeting the gaming community, particularly Minecraft players, by disguising itself as a cheat tool named “Slinky.” It employs a two-stage attack to extract sensitive information from eight major web browsers, including Chrome and Firefox, while evading detection by security software. The malware siphons off cookies, saved passwords, payment card information, and session tokens. Researchers at Zenox.ai identified LofyStealer, linking it to the Brazilian cybercrime group LofyGang, which has been active since October 2022. The malware uses social engineering tactics to appear legitimate and operates as a Malware-as-a-Service platform, offering both Free and Premium tiers to buyers. Its technical sophistication is evident in its method of in-memory browser injection, which allows it to bypass security defenses. The stolen data is compressed and sent to a command-and-control server. Users are advised to avoid downloading unofficial game mods and enable multi-factor authentication to reduce the risk of credential theft. Security teams should monitor for specific behavioral indicators related to the malware's operations.
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