This guide covers two essential built-in Windows security tools: BitLocker for disk encryption and Windows Defender for malware protection.
BitLocker is a full-disk encryption feature in Windows (Pro & Enterprise editions) that protects data by encrypting the entire drive.
Control Panel > BitLocker Drive Encryption📝 Recovery key is crucial for unlocking if credentials are lost.
manage-bde -status # Check BitLocker status
manage-bde -on C: -password # Enable BitLocker on C: with password
manage-bde -off D: # Disable BitLocker on D:
Windows Defender is the default antivirus and antimalware protection in Windows 10/11.
Settings > Privacy & Security > Windows SecurityUsing PowerShell:
Get-MpComputerStatus # Show Defender status
Update-MpSignature # Update definitions
Start-MpScan -ScanType FullScan # Run full system scan
| Feature | BitLocker | Windows Defender |
|---|---|---|
| Purpose | Drive encryption | Malware protection |
| Protects Against | Data theft/loss | Viruses, ransomware, spyware |
| Availability | Windows Pro/Enterprise only | Included in all Windows versions |
| Encryption | Yes (AES-based) | No |
| Real-time Scanning | No | Yes |