Symantec Archives

Tech Optimizer

January 22, 2026

Hackers Weaponized 2,500+ Security Tools to Terminate Endpoint Protection Before Deploying Ransomware

A large-scale campaign is exploiting the truesight.sys Windows security driver from Adlice Software’s RogueKiller antivirus to disable endpoint detection and response (EDR) and antivirus solutions, facilitating the deployment of ransomware and remote access malware. This attack utilizes over 2,500 validly signed variants of the driver, allowing attackers to manipulate legacy driver signing rules to load pre-2015 signed drivers on Windows 11 machines. The vulnerable TrueSight driver exposes an IOCTL command that enables attackers to terminate security processes, providing them with kernel-level access to bypass user-mode protections. The infection chain typically starts with phishing emails or compromised sites, leading to the installation of a downloader that retrieves additional malicious components. The malware establishes persistence and deploys an EDR killer module targeting nearly 200 security products. Once defenses are disabled, the final payload, often a remote access trojan or ransomware, executes with minimal visibility, completing the attack in as little as 30 minutes.

Tech Optimizer

January 7, 2026

Norton in 2026: Is the Old-School Antivirus Brand Still Worth Your Trust?

Norton has evolved into a comprehensive cybersecurity suite by 2026, transitioning from traditional antivirus software to a holistic solution under Gen Digital Inc. Its offerings include Norton 360, which provides real-time malware and ransomware protection, a built-in unlimited data VPN, password management, dark web monitoring, and identity protection on higher tiers. The Norton 360 Deluxe plan is popular for households, offering high protection scores, a usable VPN, dark web monitoring, cross-platform support, and identity protection features. Users appreciate its ease of use, strong protection record, and the value of the VPN, while some express frustration with upselling, auto-renew pricing, and performance on older machines. Norton competes with brands like Bitdefender, Kaspersky, and McAfee, with its all-in-one convenience being a key advantage. It is suitable for families and less tech-savvy users but may not be ideal for those preferring minimalist setups or who have older hardware.

Winsage

October 31, 2025

Windows LNK File UI Misrepresentation Enables Remote Code Execution Attacks

A vulnerability in the Windows operating system, identified as ZDI-CAN-25373 and disclosed in March 2025, allows advanced persistent threat (APT) actors to deploy malware by manipulating whitespace in Windows LNK files. This technique has been adopted by espionage groups from North Korea, China, Russia, and Iran for data theft and intelligence-gathering. The flaw enables malicious PowerShell commands to be concealed within seemingly legitimate shortcut files, which execute automatically when opened. The exploitation involves weaponized LNK files that initiate obfuscated PowerShell commands to decode embedded TAR archives containing a legitimate Canon printer utility, a malicious loader DLL, and an RC4-encrypted payload with remote access trojan malware. The legitimate executable, although signed with an expired certificate, is trusted by Windows due to its valid timestamp. As of October 2025, Microsoft has not released a patch for this vulnerability, prompting organizations to implement defensive measures against its exploitation.

Tech Optimizer

October 17, 2025

Russian tech firm attacked by Chinese state hackers in allied attack

The Chinese APT group Jewelbug infiltrated a Russian IT provider undetected for five months. They have increased their activity, targeting Russian entities as well as interests in South America, South Asia, and Taiwan. Jewelbug used a disguised version of the Microsoft Console Debugger (CDB) to bypass security measures and exfiltrate data. They cleared Windows Event Logs to avoid detection and used Yandex Cloud for data exfiltration. Symantec's report indicates that Russian organizations are vulnerable to attacks from Chinese state-sponsored groups.

Tech Optimizer

September 27, 2025

Antivirus Statistics 2025: Revealing Growth & Usage

The global antivirus software market is projected to reach approximately billion by 2025 and grow at a compound annual growth rate (CAGR) of around 6.9% through 2029. By 2025, 84% of users are expected to have antivirus software installed on their computers, and approximately 68% will have antivirus protection on their smartphones. In recent testing, antivirus products were evaluated against 212 test cases, with 560,000 new malware variants detected globally each day. Microsoft Defender and Norton achieved perfect protection scores of 100% in evaluations conducted in June 2025. Microsoft is redesigning Windows to relocate antivirus and Endpoint Detection and Response (EDR) applications out of the kernel. In 2024, the U.S. government prohibited the sale of Kaspersky antivirus software due to national security concerns. Gen Digital anticipates revenue between .70 billion and .80 billion for 2026. The integration of AI into malware frameworks is pushing antivirus vendors to adopt machine learning-driven threat detection models. Antivirus plans are predominantly priced between and , with 32.1% of plans falling within this range. Only 3.6% of antivirus options are free, and 93% of products offer a 30+ day money-back guarantee. 79% include defenses against ransomware and phishing attacks, and 61% come with a built-in firewall. The average maximum coverage per antivirus subscription extends to 24 devices. In 2024, around 121 million Americans used third-party antivirus software, with 17 million adults intending to adopt antivirus software within six months. Among users of commercial antivirus software, 74% reported encountering malware in the past year. Detection effectiveness in malware tests often surpasses 99% for leading antivirus products, while false positive rates vary significantly. Symantec leads the Windows antivirus market with a share of 13.81%, followed by AVAST Software (11.93%) and ESET (11.03%). Approximately 560,000 new malware variants are identified daily, and there are over 1 billion documented malware samples worldwide. Ransomware attacks targeting Windows constitute around 93% of all enterprise ransomware incidents. In 2024, 17% of U.S. adults reported using antivirus software on mobile phones, with 73% opting for paid versions. Free antivirus solutions typically offer basic features but lack advanced modules. The enterprise antivirus market is projected to reach approximately .0 billion by 2024, with significant growth expected in the coming years. North America holds approximately 48.3% of the global antivirus market share, while Europe experiences growth due to regulations. IoT devices are increasingly targeted, with unpatched firmware responsible for about 60% of IoT breaches. The average cost of an IoT security failure incident is approximately 0,000. Typical antivirus subscriptions range from to 0 per year, with many vendors offering multi-device bundles.

Winsage

September 1, 2025

Hackers Leverage Windows Defender Application Control Policies to Disable EDR Agents

Cybercriminals are using Windows Defender Application Control (WDAC) policies to disable Endpoint Detection and Response (EDR) agents, creating vulnerabilities in corporate security. Ransomware groups like Black Basta have adopted this method, which evolved from a proof-of-concept tool called "Krueger" into real malware named "DreamDemon." Attackers manipulate the C:WindowsSystem32CodeIntegritySiPolicy.p7b file to implement malicious WDAC policies that block EDR executables during system startup. The technique involves a four-step process: loading the policy, placing it in the CodeIntegrity directory, hiding the policy file, and creating decoy log files. DreamDemon samples, written in C++, exhibit enhanced stealth and target major EDR vendors. Detection efforts focus on monitoring specific registry keys and analyzing file signatures. Despite awareness of this threat, EDR vendors have not implemented sufficient preventative measures, leaving systems exposed.

Winsage

September 1, 2025

Hackers Exploit Windows Defender Policies to Shut Down EDR Agents

Cybercriminals are exploiting Windows Defender Application Control (WDAC) policies to disable Endpoint Detection and Response (EDR) agents. This threat emerged from a proof-of-concept called "Krueger," which demonstrated how to block EDR services by integrating a custom WDAC policy. Following its release in December 2024, various malware families began using this technique, including a new malware called "DreamDemon," which embeds a WDAC policy within its resources and modifies system files to evade detection. Both Krueger and DreamDemon reveal significant weaknesses in EDR capabilities, as current prevention measures are largely reactive and insufficient against these types of attacks. As of September 2025, no vendor has provided a comprehensive solution to prevent WDAC-based shutdowns. Security teams are advised to monitor specific registry keys and file changes to detect potential policy abuses.

Winsage

August 19, 2025

Ransomware gang masking PipeMagic backdoor as ChatGPT desktop app: Microsoft

Microsoft has identified a sophisticated malware called PipeMagic, disguised as a ChatGPT desktop application, linked to the threat actor Storm-2460, who is preparing for ransomware attacks. This malware exploits a zero-day vulnerability (CVE-2025-29824) affecting the Windows Common Log File System Driver (CFLS), first disclosed in April. PipeMagic has targeted sectors such as information technology, financial, and real estate across the U.S., Europe, South America, and the Middle East. It emerged in 2022 during attacks on Asian entities and resurfaced in September 2024. Victims see a blank screen upon opening the malicious application, complicating detection. Hackers modified an open-source ChatGPT project to embed malicious code that activates the malware, allowing privilege escalation and ransomware deployment. Kaspersky reported that PipeMagic was used in a RansomExx ransomware campaign, and Symantec noted its exploitation by the Play ransomware group.

Tech Optimizer

August 8, 2025

Cyberattackers Leverage Trusted Drivers to Disable Antivirus Software and Bypass Security Protocols

A cyberattack on a Brazilian enterprise involved the use of legitimate, digitally signed drivers to disable antivirus solutions and deploy MedusaLocker ransomware. The attackers executed a Bring Your Own Vulnerable Driver (BYOVD) attack by exploiting the ThrottleStop.sys driver, which has a critical vulnerability (CVE-2025-7771) allowing unauthorized memory access. They compromised an SMTP server using valid RDP credentials, extracted user credentials with Mimikatz, and moved laterally across the network. The attackers uploaded and executed an AV killer program and a renamed version of the driver, terminating antivirus processes to facilitate ransomware deployment. The malware targeted major antivirus vendors and employed kernel-level commands to eliminate security processes. Recommendations for defense include multi-factor authentication, hardening RDP access, and implementing layered security measures.

Tech Optimizer

June 1, 2025

Bitdefender vs. Norton: Which Antivirus Titan Reigns Supreme for Your Digital Safety?

Bitdefender was established in 1996 and rebranded in 2001, becoming the most popular mobile antivirus in North and South America in 2022. Norton was founded in 1982 and became well-known after Symantec's acquisition. Bitdefender achieves over 98% detection rates online and offline, with five false positives in tests, while Norton exceeds 99% online and 97% offline but has a higher false positive rate. Bitdefender offers a configurable firewall in its Total Security package, while Norton provides a customizable firewall across all products. Bitdefender lacks identity theft protection in its core offerings but offers a separate service, while Norton includes comprehensive identity theft protection in its highest tier. Bitdefender includes a VPN with a 200MB daily cap, while Norton offers an unlimited VPN in most tiers. Bitdefender features an integrated password manager without two-factor authentication, while Norton allows credential sharing and has standalone options. Bitdefender provides basic parental controls, while Norton includes additional features like GPS tracking. Bitdefender enhances its packages with a file shredder and vulnerability scanner, while Norton offers SafeCam and Dark Web Monitoring. Bitdefender is known for resource efficiency, receiving awards for performance, while Norton also received recognition for its performance. Bitdefender has an easy-to-navigate interface, while Norton has a more complex interface. In AV-Comparatives tests, Bitdefender slightly surpassed Norton in offline detection and online protection rates. Bitdefender pricing starts at approximately .99/year for one device, while Norton starts at .99/year for one device as well.