malware Archives

Tech Optimizer

September 15, 2026

Best Free Antivirus: 11 Steps, 18/18 Score [2026]

Microsoft Defender scored 17.5 out of 18 in the June 2026 evaluations by AV-Test, while Avast Free Antivirus and AVG AntiVirus Free both achieved a perfect score of 18 out of 18. Avira Internet Security scored 16.5. The evaluations assessed 16 consumer antivirus products based on protection, performance, and usability. Microsoft Defender is built into Windows 11 and is free, while Avast and AVG are true free offerings. AV-Test uses a scoring system where each category is scored out of 6.0, leading to a maximum total of 18.0. Users should ensure they have the latest versions of antivirus products and only run one real-time antivirus engine at a time. Common pitfalls include running two real-time engines and downloading from unofficial sources. For low-risk users, Microsoft Defender is sufficient, while those seeking higher protection may consider Avast or AVG.

Tech Optimizer

September 15, 2026

Iranian Hackers Use Fake Norton Antivirus to Spread Windows Spyware

Iranian state-sponsored hackers are targeting dissidents, activists, and journalists using deceptive tactics, including malicious applications that impersonate reputable cybersecurity products like Norton Antivirus and KeePass. The FBI and UK authorities issued a warning about these hackers, who establish rapport with targets via social messaging platforms, posing as IT support or known contacts. They convince victims to download files that appear authentic, including AI video creation applications and other software. The spyware, named “Chosen Brick,” infects Windows PCs and has capabilities such as capturing screen content, recording audio, collecting message data, and downloading additional malware. The hackers have exploited this spyware to publish personal details of victims, increasing their harassment. The FBI advises potential victims on detecting the spyware and recommends enabling antivirus software, running regular scans, and avoiding unofficial downloads.

Winsage

September 15, 2026

Iranian spies hit Windows machines with Chosen Brick data-stealing malware

Iranian state cyber actors are targeting individuals through popular messaging applications, using surveillance and data-stealing malware known as "Chosen Brick," which has been in use since at least 2025. This malware is designed for Windows systems and enables the theft of personal data, allowing Iranian spies to monitor perceived threats such as dissidents, activists, and journalists. The attacks typically begin with messages sent via WhatsApp or Telegram, impersonating trusted contacts. Attackers conduct extensive research on their targets to craft convincing messages that encourage victims to download malicious files disguised as legitimate applications. Once executed, Chosen Brick operates stealthily, evading detection and establishing a connection for command-and-control communications. It can enumerate processes, capture screen and audio content, extract sensitive information, and even wipe infected systems. Organizations suspecting compromise are advised to engage IT providers for investigations and to inform staff about potential risks. Recent alerts follow cyberattacks on water and energy sectors linked to Iran, with ongoing concerns about the implications for cybersecurity amid escalating military tensions. Additionally, five US agencies have reported that attackers are using AI-generated scripts to exploit vulnerabilities in critical infrastructure systems.

Tech Optimizer

September 15, 2026

AI Is Changing Antivirus From File Matching to Behaviour-Based Malware Detection

Artificial intelligence is transforming malware detection by moving away from traditional file signature reliance to analyzing program actions. Antivirus software previously used signatures to identify known threats, but the rapid emergence of over 450,000 new malware samples daily complicates this method. Attackers now employ techniques like repacking and encryption to evade detection, prompting the need for machine-learning and behavioral techniques for better protection. Modern detection systems assess multiple characteristics of executable files, including their behavior, to identify potential threats, even if they lack recognized signatures. Microsoft's Project Ire exemplifies advanced detection capabilities, functioning as an automated malware analyst that evaluates unknown binaries based on their behavior. Additionally, modern endpoint-security products leverage cloud systems to analyze data from multiple devices, enhancing threat detection through shared intelligence. However, AI detection can still produce false positives and is susceptible to manipulation by attackers. Therefore, effective security systems require a combination of traditional measures, behavioral monitoring, machine learning, and human analysis to navigate complex threats.

AppWizard

September 15, 2026

Steam users cautioned as new free RPG hit with ‘do not play’ warning

GAMINGbible highlights a new free RPG called Adventurers Guild, developed by AG Studio, which features a whimsical fantasy world and gameplay elements reminiscent of popular franchises. However, the game has been criticized for not matching the vibrant visuals shown in its trailer, with players expressing skepticism about its authenticity. The Steam listing includes a personal email for customer service, raising further concerns. Reviews warn of potential scams, false advertising, and misleading marketing tactics, advising caution when considering the game. There is currently no evidence of malware, but players are urged to be vigilant.

Winsage

September 15, 2026

China-Linked Hackers Exploit Chrome-Windows Zero-Day Chain to Deploy GRIMWEDGE

A spear-phishing campaign linked to the Chinese threat actor UTA0560 targeted various NGOs on September 1, 2026, exploiting recently patched vulnerabilities in Google Chrome and Microsoft Windows. The campaign utilized a malicious JavaScript backdoor called GRIMWEDGE, which was deployed through a multi-stage exploit chain that involved three vulnerabilities: CVE-2026-85046, CVE-2026-87491, and CVE-2026-85880. The attack began with spear-phishing emails that led recipients to a vulnerable U.S.-based university website, allowing attackers to redirect users to their infrastructure. The exploit chain enabled arbitrary code execution and facilitated the deployment of GRIMWEDGE, which is capable of host reconnaissance, file and process management, command execution, and payload delivery. The initial payload was an executable named "msgbox.exe," which extracted a legitimate Windows binary and a malicious DLL called "wsc.dll." This DLL initiated a sideloading chain and contacted a command-and-control server for further instructions. GRIMWEDGE allows for several commands, including system reconnaissance, directory listing, file deletion, and command execution in a hidden window. It lacks built-in persistence or lateral movement mechanisms but provides a foothold for further exploitation. Concurrently, another Chinese threat actor, JungleBamboo (APT31), used the same exploit chain to deploy a loader named SUPERSTOMP, which installs a credential-stealing Chrome extension called LONGTALE. The simultaneous use of the exploit chain by multiple actors suggests potential sharing or sale of the exploit, raising concerns about patch-gap vulnerabilities that pose risks for exploitation campaigns.

AppWizard

September 15, 2026

Active Exploitation Alert: Threat Actors Abuse Anthropic Claude AI to Extract Secrets from 1.8M Android Apps in Major Credential Theft Campaign

Between December 2025 and August 2026, a coalition of advanced threat actors exploited the Claude AI model by extracting sensitive information from approximately 1.8 million Android applications. The operation involved groups such as ShinyHunters, Midnight Blizzard (APT29/Nobelium), and the Chinese-speaking entity GTG-10007. They automated the mass download, decompilation, and analysis of Android APKs for hardcoded credentials, API keys, and authentication tokens, leading to extensive credential theft and breaches across various sectors. The attack utilized a distributed pipeline on ten AWS EC2 instances to download APKs, which were then scanned using TruffleHog. Verified secrets were organized and routed in real-time to a private Telegram group for operational deployment. Over 2,100 Azure AD authentication tokens were extracted from more than 40 Microsoft tenants within 34 hours. The operation also included a carding component where stolen payment card data was sold. The tactics employed aligned with several MITRE ATT&CK techniques, including file discovery, unsecured credentials, valid accounts, phishing, and exploitation of remote services. ShinyHunters gained administrative control over targeted environments rapidly, leading to bulk data theft affecting over 200 organizations. Midnight Blizzard automated malware creation and phishing campaigns, targeting government and defense entities. GTG-10007 used Claude for coordinated offensive operations, discovering zero-day vulnerabilities and delivering exploits. Initially, the campaign targeted a broad range of Android APKs but later focused on organizations with valuable credentials across various sectors, including government, technology, and healthcare. Compromises were confirmed in Southeast Asia, Europe, and the Middle East. Organizations are advised to audit Android applications for hardcoded secrets, monitor API key usage, and implement robust security practices to mitigate risks.

AppWizard

September 14, 2026

One Click, Full Phone Access: Malicious Android Apps Raise Financial Fraud Risk

Malicious Android applications are being promoted through social media advertisements, particularly on platforms like Instagram and Facebook, posing significant risks to users. The Indian Cyber Crime Coordination Centre (I4C) has warned about deceptive apps advertised under names such as Night Play, Reloop, Kyss, Vimo, Rivo, Nezo, and Vixa, which often redirect users to pornographic websites to download APK files. These applications can exploit sensitive device permissions, leading to malware infections, unauthorized financial transactions, and various forms of cyber fraud. Users may be tricked into granting accessibility permissions that allow the malware to operate in the background and potentially install a VPN, rerouting internet traffic through servers controlled by attackers. Cybersecurity experts advise users to verify the legitimacy of applications before installation and to be cautious of permissions requested by unknown apps.

AppWizard

September 12, 2026

New Android Ransomware Records Screens, Steals OTPs and Secretly Takes Photos of Victims

A newly identified malware threat in the Android ecosystem, named Mantax Otax, combines ransomware with espionage capabilities. It targets users who install applications from untrustworthy sources, often through messaging apps or phishing attempts. The malware is linked to Indonesian cybercriminals and can steal sensitive information such as SMS one-time passwords, chat histories, and lock-screen PINs, facilitating account takeovers. Mantax Otax requests device-administrator rights and seeks access to SMS messages, contacts, and media files. It encrypts files on devices running Android 9 and earlier using AES encryption and demands a ransom for recovery. Although the impact is reduced on Android 10 and later due to Scoped Storage, the malware still poses significant surveillance risks. The malware collects extensive sensitive data, including contacts, call logs, and location data, and targets multi-factor authentication codes. It uses a deceptive system-lock overlay to capture PINs and has introduced features like WebSocket communications and disruptive pop-ups in its second iteration. Users are advised to be cautious when installing applications, avoid unsolicited APKs, and reject permissions that do not align with an app's purpose. In case of suspicious activity, users should disconnect from networks and seek help before entering sensitive information. Organizations should monitor for signs of this malware on managed devices.

Tech Optimizer

September 12, 2026

8 Antivirus (Endpoint Protection) Software for Business: Our Top Picks by Use Case (2026)

If you hold Microsoft 365 E5, you already have access to Microsoft Defender for Endpoint, which provides enterprise-grade endpoint protection at no additional cost. For organizations without a dedicated security specialist, Sophos is recommended. CrowdStrike is suitable for those with a mature Security Operations Center (SOC) and sufficient budget. Other options include SentinelOne for mid-sized organizations needing automation, ESET for older hardware and virtual desktops, Avast Business for very small businesses without IT staff, VIPRE for budget-conscious organizations, and Expel for tool-agnostic managed detection and response. It is essential to assess your organization's current situation honestly when evaluating endpoint protection options. Antivirus and EDR are now essentially the same agent, and organizations should inquire about update staging processes and review independent tests for protection rates. Coverage for servers and Linux environments is often overlooked but crucial, as Linux servers are prime targets for ransomware. Key recommendations include: - Microsoft Defender for Endpoint for organizations already on Microsoft 365 E5. - Sophos for organizations with 25-500 staff relying on IT generalists. - CrowdStrike for enterprises with a well-funded security operations function. - SentinelOne for mid-sized organizations needing autonomous operation. - ESET for organizations with older hardware or virtual desktop infrastructure. - Avast Business for micro and small businesses. - VIPRE for budget-conscious organizations. - Expel for those seeking managed detection across various environments. During deployment, avoid running two real-time agents simultaneously, ensure prevention features are activated, and test on line-of-business applications first. Verify update staging and rollback procedures with vendors, and confirm whether Microsoft licensing covers your needs to avoid unnecessary purchases.