External
VirusTotal
Scan a file or URL against dozens of antivirus engines at once.
VirusTotal analyzes suspicious files and URLs with a large set of antivirus engines and site scanners, returning a combined verdict. The basic web lookups are free and account-free, and it is the standard first stop for a suspicious attachment.
Best for: Use this when you receive a questionable file or link and want a many-engine second opinion.
Pros
- Dozens of engines beat any single antivirus opinion
- URL and domain reputation checks too
- Free for everyday lookups
Cons
- Uploaded files are shared with the security community, never upload confidential documents
- A clean scan is not a guarantee of safety
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