| Symantec Security Scan | Let them try to spy your computer to find out how save you are. | |
| Shields UP! | Let them try to spy your computer to find out how save you are. | |
| Kaspersky | Well known developer of antivirus software | |
| Jotti | You can upload a suspicious file and it will be immediately scanned by several virusscanners | |
| audit my pc | Free online firewall security and internet speed test | |
| ssdeep | Recursive computing and matching of Context Triggered Piecewise Hashing (Fuzzy Hashing). Useful for Digital forensic. |