antivirus scan Archives

Tech Optimizer

November 29, 2025

Virus Alert: 4 Warning Signs on Your Laptop You Must Not Ignore

Laptops are at risk of viruses due to internet connectivity and USB drives. Signs of potential virus infection include: 1. Sudden Slowdown: A laptop that slows down unexpectedly may have a virus consuming resources. Action: Conduct a full antivirus scan. 2. Unexplained Pop-Ups: Frequent pop-ups or ads may indicate malware. Action: Install a malware removal tool and enable pop-up blocking. 3. Programs Opening or Closing Automatically: Applications launching or shutting down without command could signal a remote access trojan. Action: Disconnect from the internet and run antivirus scans. 4. Strange Hard Drive or Network Activity: Excessive disk or network activity while idle may suggest hidden malware. Action: Monitor task manager for suspicious processes. Preventive measures include keeping antivirus software updated, avoiding unknown USB drives, regularly updating the operating system, and backing up important files.

Tech Optimizer

October 23, 2025

Delete the fake VPN app stealing Android users’ money

Malware targeting Android devices has become more sophisticated, with cybercriminals deploying fake banking applications and phishing campaigns. A recently identified dangerous app, Mobdro Pro IP TV + VPN, introduces a malware strain called Klopatra, which is used in campaigns against financial institutions. This app appears to be a free streaming platform but installs a banking Trojan and remote-access tool, allowing attackers to steal banking credentials and conduct fraudulent transactions. The infection process involves social engineering tactics to trick users into downloading the app from unofficial sources, and Klopatra can bypass Android's security measures. The rise of fake VPNs, like Mobdro, poses a significant risk, as many users rely on VPNs for privacy and security. Users are advised to take protective measures, including downloading apps only from trusted sources, checking app permissions, using secure VPNs, installing strong antivirus software, monitoring accounts, removing suspicious apps, keeping devices updated, changing passwords, enabling two-factor authentication, and reporting malicious apps.

Tech Optimizer

October 20, 2025

Goodbye to security on WhatsApp Web—the SORVEPOTEL virus uses your contacts to spread and is already worrying cybersecurity experts

Cybersecurity experts have identified a new virus called SORVEPOTEL that is affecting WhatsApp Web, primarily in Brazil, with 477 reported infections, 457 of which are in Brazil. This malware spreads by sending phishing messages containing ZIP files that appear legitimate but contain a hidden Windows shortcut that activates and downloads the virus. Once installed, it disrupts systems and can lead to account suspensions due to suspicious activity. To protect against SORVEPOTEL, users are advised to disable automatic downloads, avoid opening ZIP files from unknown sources, keep antivirus software updated, and educate themselves about online safety.

Tech Optimizer

August 25, 2025

New Android Spyware Masquerading as Antivirus Targets Business Executives

Doctor Web’s antivirus laboratory has identified a sophisticated Android backdoor malware named Android.Backdoor.916.origin, which has been evolving since January 2025. This spyware primarily targets Russian businesses through focused attacks, disseminated via private messages as a fake antivirus application called “GuardCB.” The app's icon resembles the Central Bank of the Russian Federation's emblem and is presented in Russian. Variants of the malware include names like “SECURITY_FSB” and “FSB,” falsely claiming to be security tools linked to Russian law enforcement. Upon execution, the malware simulates an antivirus scan, requesting extensive system permissions for surveillance and data exfiltration, including access to geolocation, audio recording, SMS, contacts, call logs, media files, and camera functions. It establishes connections to command-and-control servers, allowing attackers to send and receive sensitive data, initiate audio and video feeds, and execute commands. The malware employs keylogger functionality to intercept keystrokes and monitor specific applications for content theft. Doctor Web has notified domain registrars to disrupt the malware's infrastructure and confirms that all known variants are detected and neutralized by their antivirus solutions. Organizations are advised to enforce strict APK sideloading policies and verify app authenticity to counter such threats.

AppWizard

August 20, 2025

Fake Antivirus App Spreads Android Malware to Spy on Russian Users

Cybersecurity experts at Doctor Web have identified a new variant of Android malware called Android.Backdoor.916.origin, active since January 2025. This malware can eavesdrop on conversations, steal messages, stream video, and log keystrokes. It targets Russian business representatives rather than average users, being distributed through direct messages as a fake antivirus app named GuardCB, which mimics the Russian Central Bank's emblem. The app requests extensive permissions, including geolocation, audio recording, camera access, and SMS data, and can function as a keylogger. It is designed for persistence, launching background services and communicating with multiple command-and-control servers. The malware can livestream audio, broadcast video, capture text, and upload contacts and call history. It exploits Android’s Accessibility Service to capture keystrokes and prevent uninstallation. The interface is exclusively in Russian, indicating it is specifically designed for a targeted group. Users in Russia are advised to download applications only from trusted sources to mitigate risks.

Tech Optimizer

July 22, 2025

Can A Hacker Take Over Your Computer? What to Know About Remote Access Trojans

Remote access trojans (RATs) are malware that allow hackers to control devices remotely, enabling them to steal passwords, monitor screens, log keystrokes, activate webcams or microphones, install additional malware, and use the computer for further cyber attacks. RATs typically enter systems through phishing, malicious downloads, fake updates, or compromised websites. Signs of a RAT infection include sluggish performance, unusual network activity, mysterious programs, unexpected pop-ups, and unexpected activation of camera or microphone lights. Preventive measures include being cautious with communications, downloading from reputable sources, using antivirus software, keeping software updated, and implementing a firewall. If a RAT is suspected, it is advised to disconnect from the internet, run a full antivirus scan, check installed programs, change passwords, and consider a factory reset. Smartphones can also be vulnerable to RATs, which may manifest as rapid battery drain, overheating, strange pop-ups, excessive data usage, and unfamiliar apps. Immediate actions for compromised phones include enabling airplane mode, deleting suspicious apps, and updating the operating system.

Winsage

June 18, 2025

It’s time to update Asus Armoury Crate, folks—the latest vulnerability could allow hackers to compromise your Windows OS

A newly discovered vulnerability in Asus Armoury Crate, identified as CVE-2025-3464, has a severity rating of 8.4 out of 10 and allows hackers to gain low-level privileges on Windows systems. The affected versions of Armoury Crate range from V5.9.9.0 to V6.1.18.0. Researcher Marcin "Icewall" Noga from Cisco Talos highlighted this issue, prompting Asus to issue a product security advisory. Users are advised to verify their version of Armoury Crate and update to the latest version if necessary. No incidents of this exploit being actively used have been reported thus far. This is the second vulnerability found in an Asus utility within two months, following a separate issue with DriverHub reported in May.

Tech Optimizer

May 29, 2025

How to run an antivirus scan on your computer

When selecting antivirus software, understanding its functionality is crucial to ensure adequate protection. Running a virus scan involves opening the antivirus program, clicking the ‘Scan’ button, and allowing the software to operate. Automated scan schedules are important for consistent protection, especially during system startup to catch hidden malware. Key points for executing scans include avoiding heavy applications during the scan, utilizing the ability to pause scans, and ensuring laptops are charged and plugged in. During scans, the antivirus may identify potentially unwanted programs (PUPs), which should not be dismissed. After a scan, reviewing the results is essential, including threat names, severity ratings, affected files, and recommended actions. If threats are detected, correlating them with known vulnerabilities is advisable. Some malware may require a device restart or boot-time scanning for removal. Maintaining exportable logs can be beneficial for future reference. Post-scan, it is important to patch operating systems, change passwords if necessary, perform system backups, and establish a regular backup plan. Most antivirus programs offer features for automated scans and real-time protection, which should be utilized. Regular checks of reports are necessary to stay informed about device security. To maintain virus-free devices, users should avoid unknown links or email attachments, download software from legitimate sources, use strong passwords, back up important files, keep browsers updated, and enable multi-factor authentication. Regular virus scans are vital for safeguarding online presence and preventing performance issues.

Winsage

October 16, 2024

8 ways to fine-tune Windows 11 for optimal performance without the bloat

- Change the power mode settings to High performance for a speed boost, especially in resource-intensive tasks. - Run antivirus scans to eliminate viruses and malware that may slow down the computer. - Disable search indexing to free up system resources if the search function is rarely used. - Increase the page file size to provide a virtual memory boost for systems with limited RAM. - Limit bandwidth for Windows updates to ensure responsive internet speeds. - Disable unnecessary startup tasks to streamline the boot process and improve overall performance. - Use Efficiency mode in Task Manager to reduce CPU allocation for background apps, but consider disabling it for important applications. - Utilize Win11Debloat to remove unnecessary pre-installed applications and features, enhancing system performance.

AppWizard

August 27, 2024

How to Safely Download and Install APKs on Android Devices

APKs (Android Package Kits) allow users to download apps that may not be available in their region's Google Play Store. They serve as installation files for Android applications, similar to .exe files for Windows. While downloading APKs is legal, acquiring pirated apps is not. Risks associated with downloading APKs include malware, data theft, device bricking, and compatibility issues. To safely download APKs, users should choose reliable sources, review files, check user ratings, and avoid suspicious websites. The installation process involves enabling installations from unknown sources, downloading the APK, and conducting an antivirus scan before launching the app. Best practices for safe APK use include keeping the device updated, using mobile antivirus software, regularly backing up the device, and not sharing APK files.