| Feature | Windows Defender (Built-in) | Bitdefender (90-day Trial) | | :--- | :--- | :--- | | | Low (Requires constant updates) | High (AI heuristics work offline) | | Phishing Protection | Moderate (Browser-dependent) | Excellent (System-wide filter) | | Performance Impact | Heavy (Scans slow down old PCs) | Light (Autopilot mode during idle) | | Ransomware Rollback | Limited (OneDrive only) | Full (Local folder backup) | | VPN Included | No | Yes (200MB/day) | | Firewall Outbound Rules | Complex (Requires advanced config) | Automatic (Silent mode) |
Bitdefender frequently runs limited-time promotions for their or Premium Security suites. bitdefender 90 days free trial
If you are on the fence about which antivirus to choose, the removes all the friction. It offers a quarter of a year of premium, top-rated protection without asking for a dime. | Feature | Windows Defender (Built-in) | Bitdefender