network security Archives

Tech Optimizer

September 1, 2026

What a smart firewall does and why it matters on home Wi-Fi

Home Wi-Fi connects various devices and presents security risks, making firewalls important for network protection. A router firewall is built into the home router and protects all connected devices, while a software firewall operates on individual devices for additional security. Inbound traffic is data coming to a device, while outbound traffic is data leaving it; firewalls analyze this traffic to manage connections. Network security is critical as sensitive information is often accessed on devices used for leisure, and remote work increases data overlap. Firewalls can control network connections and filter unwanted traffic but cannot replace weak passwords or antivirus protection. To enhance home network security, users should secure router settings, keep routers updated, strengthen Wi-Fi access, check connected devices, and replace outdated routers. A comprehensive security strategy includes keeping software updated, using multifactor authentication, being cautious with links, and strengthening firewalls with antivirus protection. Protecting valuable data is essential, and understanding ransomware risks is crucial. The 3-2-1 backup strategy involves maintaining three copies of data on two different storage types, with one copy offsite. Regularly testing backups and knowing how to respond to ransomware incidents are also important.

AppWizard

August 29, 2026

Android 17 adds new protections against sneaky Wi-Fi tracking and web snooping

Google has introduced several network security enhancements in Android 17 to improve user privacy. One key feature is Encrypted Client Hello (ECH), which encrypts domain names to prevent external observers from monitoring user activities. ECH is integrated with private DNS and is enabled by default for apps using compatible networking libraries. Google claims to be the first major mobile operating system to implement widespread ECH support. Testing conducted by Jigsaw showed stable connection success rates and minimal interference across various networks. Additional security features in Android 17 include: - Local Network Protection, requiring apps to request permission before accessing devices on a user's home network. - Certificate Transparency, mandating public logging of certificates to detect forged ones. - A 2G Network Shutdown option for mobile operators to disable 2G services, reducing exposure to phishing messages.

AppWizard

August 28, 2026

4 new ways Android is protecting your network connections

Developers are encouraged to upgrade to OkHttp 5.5.0 and enable Encrypted Client Hello (ECH) for modern networking practices. Android 17 introduces Local Network Protection, requiring apps to obtain user permission before scanning local networks. Android has implemented Certificate Transparency (CT) by default to log all certificates in a public registry, reducing the risk of fraudulent certificates. Scammers are using portable devices known as “SMS blasters” to target mobile users by forcing them onto less secure 2G networks, allowing phishing texts to bypass modern spam filters.

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.

Winsage

August 13, 2026

How to Turn Your Idle Home PC into a File Server Using Built-in Windows Features

Many individuals are repurposing older PCs into home file servers, especially those not eligible for the Windows 11 update. This process utilizes built-in Windows features, allowing families to share files across devices without additional software, making it cost-effective since it leverages existing hardware. The setup involves four steps: preparing storage, creating a local account, creating shared folders, and accessing them from other PCs. Guidelines suggest around 500GB for photos and 1TB for videos. Compared to commercially available NAS devices, repurposing a PC incurs virtually no cost, while NAS options range from approximately ¥30,000 to ¥80,000. Performance tests show that mini PCs as file servers can achieve read speeds of about 4.8GB/s and write speeds of around 4.5GB/s on a 2.5GbE network. This method is particularly appealing for older PCs, allowing users to maximize resources rather than discard them, while also addressing the growing demand for efficient file sharing in households. Data backup and security measures are essential considerations when operating a file server.

Tech Optimizer

August 7, 2026

I’ve found the best antivirus software to protect your PC in 2026

The Independent and Yahoo will earn a commission from purchases made via links in this article. Pricing and availability are subject to change. Windows 11 includes Microsoft's built-in Defender, but its security measures are basic. Effective antivirus solutions provide comprehensive threat analysis, advanced malware protection, and additional privacy features such as VPNs and password managers. No antivirus can protect against every threat, so users should download applications from trusted sources and use strong, unique passwords. The best antivirus apps for 2026 include: - Bitdefender Total Security: £42.49 for the first year, rated 5/5, includes a limited VPN, offers multi-device coverage, excellent malware detection, and built-in tools for phishing and ransomware protection. - Malwarebytes Plus: £29.99 annually for the basic package, rated 4/5, includes a VPN in the 'plus' bundle costing £49.99, focuses on malware removal and identity protection features. - McAfee Premium: Rated 4/5, includes unlimited VPN, compatible with various platforms, offers a firewall, ransomware protection, and AI-powered scam detection. - F-Secure Total: Rated 4/5, includes a password manager and deep scanning capabilities, but the basic plan covers only a single device. - Sophos Home Premium: Rated 4/5, allows coverage for up to ten devices under one subscription, features real-time scanning and parental controls, but does not include a password manager. Most antivirus applications offer free trials. The testing involved installing each application on a Windows 11 PC and conducting scans, while also reviewing reports from independent security testing labs.

AppWizard

July 13, 2026

How to Install Messaging Apps Safely on Windows PCs and Android Devices

Messaging applications are widely used for communication across various platforms, including Windows PCs and Android devices. Users often install these apps on both types of devices to facilitate conversations. The installation process requires careful consideration of the app's source, compatibility, permissions, and avoidance of counterfeit installers. Before installation, users should verify the app's source for transparency and security, ensuring it is from a trusted provider and appropriate for their device. For Windows users, a checklist includes confirming system compatibility, verifying the installer, and reading installation screens carefully. Android users should also confirm the app's source, check permissions, and avoid suspicious APK files. Fake installers and unsafe APKs pose risks, as they can contain modified versions of apps that compromise security. Users should be cautious of misleading download pages and links shared in online groups. Keeping messaging apps updated is essential for performance and security, and users should manage updates from trusted sources. Before logging into a messaging app, users should ensure it was downloaded from a reliable source, verify the file's compatibility with their device, review permissions, and safeguard verification codes. After logging in, users should check active sessions and remain vigilant against suspicious links and files.

Winsage

June 13, 2026

Windows Server is getting new network safety capabilities with DNS over HTTPS

Microsoft has introduced DNS over HTTPS (DoH) on Windows Server 2025, enhancing network security by encrypting DNS traffic for client-to-server communications. This feature, previously available only in Windows client editions, is now part of Microsoft's Zero Trust architecture. DoH routes DNS traffic through HTTPS secured with TLS certificates, preventing eavesdropping and safeguarding DNS data from tampering. It adheres to the IETF DNS over HTTPS standard (RFC 8484) and can integrate with existing infrastructure, allowing organizations to maintain unencrypted DNS traffic if needed. DoH is available for Windows Server 2025 systems updated to the latest Patch Tuesday release, and Microsoft has provided guidance on enabling this feature. However, DNS traffic exchanged between two DNS servers will not be encrypted by DoH.

Tech Optimizer

May 26, 2026

Best Free Antivirus for Windows 10 in 2026: Top Free Protection Options

In 2026, the landscape of free antivirus tools for Windows 10 includes several options: 1. Bitdefender Antivirus Free - Offers robust protection with real-time malware detection and operates in the background. 2. Avast One (Free Antivirus) - A feature-rich option with tools for browser security and network protection. 3. TotalAV Free Antivirus - Focuses on scanning and cleanup, ideal for users who prefer on-demand scans. 4. AVG AntiVirus Free - Provides reliable everyday protection with a user-friendly interface. 5. Avira Free Security - A comprehensive package that includes multiple security tools. 6. Malwarebytes Free - Serves as a secondary scanner to catch threats that others may overlook. 7. Microsoft Defender Antivirus - Built into Windows, offering essential protection without additional installation. Key features to consider in free antivirus software include real-time malware detection, phishing defense, ransomware protection, automatic updates and scans, and a user-friendly interface. Free antivirus tools often lack advanced features found in paid versions, such as comprehensive VPN services, advanced firewall options, identity theft protection, and priority customer support. Drawbacks of free antivirus software include limited features compared to paid versions, potential intrusive advertisements, and less comprehensive customer support. Specific recommendations based on user needs include: - Bitdefender Antivirus Free for minimal interference. - Avast One for extensive features. - TotalAV Free Antivirus for users focused on system cleanup.

Tech Optimizer

May 13, 2026

AI-Powered Endpoint Detection and Response: Why Modern Cybersecurity Depends on EDR

Every device connected to a corporate network, including laptops, desktops, servers, and mobile phones, can be a potential gateway for cyberattacks. AI-powered Endpoint Detection and Response (EDR) solutions are essential in modern cybersecurity strategies, utilizing behavioral analysis, real-time monitoring, and machine learning to detect, investigate, and respond to advanced threats. Traditional antivirus software, which relies on known malicious signatures, is becoming ineffective against modern attackers who use fileless attacks and custom-built malware. EDR continuously monitors endpoint activity, capturing behavioral data to identify anomalies consistent with attacks. It provides forensic capabilities to help security teams understand how breaches occur. EDR is a critical component of a multi-layered security architecture, complementing other security measures like firewalls and patch management. When choosing an EDR solution, organizations should consider real-time detection, automated response capabilities, integration with existing security tools, and ease of investigation.