VirusTotal acts as an aggregator of various virus, threat and breach scanners.
You can submit your file (see note below on that), any url or search for any known threat by the cybersecurity community. Completely free to use for any personal needs.
Some software vendors also use this service as an independent reviewer of their sold product.
Privacy: we have no feedback of potential problem with this tool and author. But like many online services, you are here providing them with your own data. Depending of the criticity of your data, this is your responsibility to assess author's reputation and potential misusage, and to check and accept their terms and conditions, or not.
Free, No Download/Install required, No registration
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