Is Windows Defender good enough?

No, they aren’t comparable tools for the same purpose.

Quick Heal Total Security for Android protects Android devices from malware, phishing, and threats.

AVG Driver Updater updates PC drivers, not mobile security, so it’s irrelevant for Android or general startup antivirus needs.

For antivirus protection, Quick Heal (or another mobile/endpoint AV) is the right category, not a driver updater.

Norton 360 (by Norton) is one of the best antivirus solutions to help prevent data breaches with strong real-time malware, ransomware, phishing, and identity-theft protection.

An Android Trojan is a type of malware that disguises itself as a legitimate app (e.g., news readers, digital ID apps, or even Google Chrome clones) to trick users into installing it. Once installed, it can:

• Steal banking credentials via overlay attacks.
• Read on-screen encrypted messages (WhatsApp, Telegram, Signal).
• Gain full device control using Accessibility Services and Device Administrator privileges.
• Send sensitive data (location, installed apps) to remote servers.
• Impact: Financial fraud, crypto theft, and privacy breaches.

• Through malicious APKs from unofficial sources or phishing links.
• Fake apps on third-party stores or even compromised Play Store apps.
• Social engineering tricks (e.g., asking for Accessibility permissions to improve app performance).

• Turn on your PC and ensure Windows is fully installed and updated on the new hard disk.
• Connect to the internet and go to the official website of your antivirus provider.
• Sign in, download the installer, and activate it using your existing license key.
• Run a full system scan after installation to secure the new disk.