system scan Archives

Tech Optimizer

September 21, 2026

Thousands of hacked sites trick you into installing malware

More than 5,400 websites across over 2,200 organizations have been compromised to propagate malware, primarily affecting small businesses like clinics and online retailers. The attack mechanism involves malicious code that triggers a deceptive CAPTCHA, instructing users to execute commands that can download malware. Attackers are using the BNB Smart Chain test network to store instructions, making it harder for investigators to shut down operations. A newer variant of the attack uses WebRTC technology to establish encrypted connections for delivering additional malicious code. To protect against these threats, users should avoid pasting commands from websites, be suspicious of unusual CAPTCHA instructions, use strong antivirus protection, keep systems updated, take action if commands are executed, and small business owners should regularly verify their website's integrity.

Tech Optimizer

September 19, 2026

Set Up Bitdefender Antivirus Free: 13 Steps [2026]

Bitdefender Antivirus Free was upgraded to version 27.0.62.355 on September 11, 2026, introducing a new Advanced Threat Defense driver that enhances behavioral monitoring capabilities. The free version is designed for Windows only and promises to remain free indefinitely, lacking features found in paid versions such as anti-tracking tools and a full vulnerability scanner. The installation requires Windows 10 or 11, at least 2GB of free disk space, a local administrator account, an active internet connection, and a Bitdefender Central account. Users must remove any existing antivirus software before installation, and the installation process typically takes 60 to 75 minutes. Bitdefender Free covers one Windows device and offers robust malware detection capabilities, particularly with the Advanced Threat Defense layer. It is recommended to schedule regular scans and check the Notification Center for quarantined items. If uninstalled, the dedicated uninstall tool should be used to avoid leftovers that could interfere with future installations.

Tech Optimizer

August 24, 2026

Bitdefender vs Avast: Which is the right antivirus software package for you

Antivirus software is essential for protecting PCs from threats, with Windows 11 including Microsoft Defender. Bitdefender offers a range of plans, including family plans for up to 25 devices, while Avast provides a free antivirus option and cheaper Premium Security. Bitdefender's basic antivirus starts at £17.99 for one device, with Premium Security at £59.99, Total Security at £49.99, and Ultimate Security at £69.98. Avast Premium Security is priced at £39.99 for one device. Bitdefender includes unlimited VPN with Premium Security, while Avast requires an upgrade for VPN access. Both offer scam protection, but Bitdefender is noted for its comprehensive features and user-friendly interface. Bitdefender provides 24/7 support, while Avast offers live chat and toll-free support but has a less appealing support layout. Overall, Bitdefender is preferred for its features, ease of use, and support options.

Tech Optimizer

August 17, 2026

Best Malware Removal Tools of 2026: Tested on Infected PC

A hands-on evaluation was conducted to assess the effectiveness of various malware removal tools by deliberately infecting a PC and running six different cleanup tools. The recommended steps for users suspecting malware infection include disconnecting from the internet, installing an on-demand scanner, removing detected threats, rebooting the system, and changing passwords. The top malware removal tools identified were: 1. Malwarebytes Free: Quick scan in 2 minutes and 20 seconds; complete removal with no remnants. 2. Bitdefender: Quick scan in 1 minute and 4 seconds; complete removal confirmed. 3. Norton 360: Quick scan in 58 seconds; effective for severely compromised devices. 4. Avast One Free: Quick scan in 1 minute and 12 seconds; complete removal with ongoing protection. 5. McAfee: Full system scan took 16 minutes and 47 seconds; complete removal but slower than others. 6. NordVPN Threat Protection Pro: Focuses on preventing reinfection, does not remove existing malware. Signs of infection include unexpected pop-ups, altered homepage settings, and sluggish performance. For Windows, Safe Mode with Networking is recommended for removal, while Mac users should use Activity Monitor to identify suspicious processes. Android users can utilize Safe Mode and Play Protect for scanning. A factory reset may be necessary if infections persist. Malwarebytes Free and Avast One Free are highlighted as effective free options for malware removal.

Tech Optimizer

July 22, 2026

Advanced SystemCare 19 Cleaned 3GB Hidden Junk From My PC

The user experienced a slow computer with prolonged startup times and storage shortages despite manual cleanup efforts, including emptying the Recycle Bin and using Windows Disk Cleanup. A deeper system scan revealed hidden junk files such as temporary files, browser cache, and outdated logs. The user then utilized Advanced SystemCare 19 Free, which effectively identified and removed 3GB of junk files, resulting in improved startup speed, program launch times, and overall performance. Advanced SystemCare also includes features like a registry cleaner, large file finder, disk cleaner, and app/extension cleaner, and it serves as a comprehensive system optimization suite with tools for enhancing boot time and protecting privacy. The software does not delete files automatically and should be used alongside antivirus software for complete protection.

Tech Optimizer

July 15, 2026

Can Chromebooks Get Viruses? How to Protect Your Device

Chromebooks are designed with robust security features, including sandboxing, Verified Boot, automatic updates, data encryption, and Recovery Mode, which collectively reduce the risk of malware infections. However, they are still vulnerable to threats such as malicious Chrome extensions, scam Android apps from third-party stores, phishing attacks, and risks associated with using Developer Mode and cloud storage. Users can identify potential malware through signs like slow performance, unexpected pop-ups, and unusual battery drain. To remove malware, users should eliminate suspicious extensions, uninstall dubious apps, run antivirus scans, enable Google Play Protect, or perform a Powerwash to reset the device. To protect their Chromebooks, users should avoid Developer Mode, check app permissions, use two-factor authentication, verify website URLs, and use a VPN on public Wi-Fi.

Tech Optimizer

June 20, 2026

Chinese police bust cybercrime ring behind ‘Silver Fox’ Trojan virus

Chinese law enforcement has dismantled cybercrime operations linked to a new variant of the Silver Fox Trojan virus, which targets employees in enterprises and public institutions, particularly in financial roles. The malware allows cybercriminals remote access to steal account credentials, intercept SMS verification codes, and harvest personal information. A criminal syndicate in Jilin province, led by an individual named Chen, developed this Trojan and conducted mass phishing campaigns, resulting in losses exceeding 7 million yuan. Police have taken action against Chen and 26 accomplices, with ongoing investigations. Recommendations for enhancing personal cybersecurity include downloading software from official websites, scrutinizing website domains, verifying links before clicking, and disconnecting compromised computers from the internet. Under China's Criminal Law, unauthorized access to computer systems and data theft can lead to imprisonment and financial penalties.

Tech Optimizer

June 8, 2026

What Is OneLaunch.exe? Pros, Cons, and How to Remove It

OneLaunch is a software application that creates a personalized dock and desktop environment on Windows computers, often pre-installed or bundled with other software. It has received mixed reviews, with concerns about system slowdowns and its legitimacy. OneLaunch.exe is a background process supporting the OneLaunch application, which provides quick access to applications and updates but can consume system resources. The OneLaunch browser, installed alongside the main application, can alter browser settings and redirect searches, potentially leading to unwanted advertisements. While OneLaunch is not classified as traditional malware, it is often categorized as a Potentially Unwanted Program (PUP) due to its bundled installation and ability to modify system settings. It can monitor browsing habits and share data with third-party advertisers. Users report intrusive behavior, such as altering default browser settings, and it can negatively impact system performance. To remove OneLaunch, users should end the running process, uninstall the application, delete leftover folders, remove startup entries, and reset browser settings. OneLaunch may reappear due to accidental reinstallations, active browser extensions, lingering scheduled tasks, or hidden companion programs. Preventative measures include downloading from official sources, reading installation screens carefully, keeping systems updated, and performing regular system checks.

Tech Optimizer

May 24, 2026

Malwarebytes review: One of the most user-friendly and comprehensive antivirus software suites

Malwarebytes is an antivirus software that offers various plans for consumers and businesses. The consumer plans include: - Standard Plan: Priced at /£29 for essential protection on a single device. - Plus Plan: Available for /£49 annually, includes high-speed VPN and anonymous browsing. - Ultimate/Total Plan: Priced at in the U.S. and £129 in the U.K., includes advanced features like social media monitoring and identity insurance up to million. - Family Plans: Starting from 9/£109 per year for multiple users. For businesses, plans start at for Sole Proprietors covering three devices, with the Small Office plan for 20 devices costing 2. Malwarebytes lacks cloud backup and parental controls, which some competitors offer. Independent testing rated Malwarebytes as "Certified" with high usability scores, but its malware detection was less impressive compared to Bitdefender and Norton 360. The software can be resource-intensive, impacting system performance, particularly during gaming. It offers three scanning modes: Threat Scan, Deep Scan, and Custom Scan, with the Threat Scan completing in 22 seconds and the Deep Scan taking over 14 minutes. Advanced features include a Digital Footprint tool, Scam Guard, a File Shredder, and a VPN. The interface is user-friendly, and 24/7 support is available via email and chat. Malwarebytes has a 60-day money-back guarantee.

Tech Optimizer

May 21, 2026

Bitdefender review: The ultimate antivirus software for all-round protection

Bitdefender is an antivirus software that offers various plans for consumers, families, and businesses, with the Ultimate Security plan being particularly notable. The software features a user-friendly interface, anti-theft and anti-scam capabilities, a VPN, and identity protection services. Pricing for consumer plans starts at .99 for Bitdefender Total Security, .99 for Premium Security, and .99 for Ultimate Security. For small businesses, the Ultimate Small Business Security Plan starts at .99 for three users, scaling up to 9.99 for 25 users. The GravityZone Small Business Security plan costs 9.99 for five devices, with the GravityZone Business Security Plan priced at 9.99. Bitdefender Total Security has received a perfect score of 6/6 from AV Test for Protection, Performance, and Usability, and an AAA rating from SE Labs. The software installation is straightforward, and it performs scans efficiently without impacting system performance. It includes features like Scam Protection Pro, Vulnerability Scan, and identity theft protection, with continuous monitoring of the dark web. Customer support is available 24/7 via email, chat, or phone, and there is a dedicated B2B help center for businesses.