security application Archives

Tech Optimizer

May 29, 2025

Windows PCs at risk as new tool disarms built-in security

All modern Windows PCs come with Microsoft Defender, a built-in antivirus solution. A tool called Defendnot can disable Microsoft Defender by tricking Windows into believing another antivirus is active. It uses an undocumented API to register a counterfeit antivirus, which leads to Microsoft Defender being automatically disabled without user notification. Defendnot creates a scheduled task for persistence and allows customization of the antivirus name. It is a successor to a previous project, No-Defender, which was removed due to copyright issues. Currently, Microsoft Defender flags Defendnot as a threat.

Tech Optimizer

April 12, 2025

I abandoned third-party antivirus tools, and here’s what I do instead

The author has transitioned from using third-party antivirus solutions to relying on Windows Security, which is built into Windows 10 and 11, due to its effectiveness and lack of cost. They emphasize the importance of keeping Windows Security updated and performing regular virus scans for added peace of mind. Ransomware protection features, such as Controlled Folder Access, are highlighted as essential. The Microsoft PC Manager app is recommended for optimizing system performance and security. The author advocates for good security hygiene, including avoiding suspicious emails and enabling two-factor authentication, as effective practices to maintain security without third-party antivirus software.

Tech Optimizer

March 11, 2025

Fake Google Play Store pages are spreading Trojan malware that can steal your financial data

CTM360, a cybersecurity firm in Bahrain, has reported a new threat called the PlayPraetor trojan, which is distributed through malicious websites that imitate trusted sources like the Google Play Store. Users who visit these counterfeit sites may download an app disguised as a legitimate APK file, which requests extensive permissions, including access to accessibility services and SMS messages. Once installed, PlayPraetor functions as spyware, capturing keystrokes and clipboard activity, and specifically targets banking applications by scanning for them on infected devices. It sends a list of these apps to the attacker's server to steal banking credentials. The fraudulent links are often shared via Meta Ads and SMS messages, making it crucial for users to be cautious with links from these sources. The malicious sites closely resemble legitimate ones, so users should verify the website's spelling and URL. Deceptive advertisements and messages are commonly used to entice users into clicking links that lead to these sites. Users should be skeptical of anything that creates urgency or offers unrealistic deals. Excessive permission requests during app downloads should raise red flags, especially for unnecessary accessibility services. It is recommended to use reputable antivirus software for mobile protection, enable Google Play Protect, and avoid sideloading apps from unofficial sources to prevent potential threats.

AppWizard

February 25, 2025

I never click any link on my Android phone without using this app first

URLCheck is an open-source application for Android that enhances link management by intercepting links before they are followed, allowing users to view, modify, or disregard them. It integrates with the VirusTotal API for threat checking, although users must sign up to use this feature. The app removes tracking tags and unnecessary redirects when sharing links. To set up URLCheck, users need to download it, select it as the default browser, and enable preferred modules. While URLCheck improves security, it does not guarantee complete safety online and requires users to exercise caution. The app only intercepts links from applications that redirect to a browser, and users must use the share menu to check URLs within their browser.