Acutis Virus / malware check by file hash — no upload
Pick a file and your browser computes its fingerprint locally. Then look that fingerprint up against the malware databases — without ever uploading the file.
Fingerprint
Check this fingerprint
What this does — and doesn't. This checks whether a file is already known to antivirus vendors by its unique fingerprint (hash). It does not upload your file and it is not a live sandbox scan. A "not found" result means the file is simply unknown to these databases — that is not the same as safe. A brand-new or targeted piece of malware will have a fingerprint nobody has seen yet.
How fingerprint checking works
Every file has a hash — a short string that changes completely if even one byte changes. Antivirus vendors and researchers record the hashes of malware they've seen. If your file's hash matches a known-bad one, it's almost certainly that same malware. The beauty: you only need to share the hash, not the file, so nothing private leaves your machine. Need to generate hashes for other reasons? Use the hash generator.
A clean hash isn't a clean machine.
Hash lookups only catch malware someone's already cataloged. Acutis Go watches your actual computer and connection in real time and tells you plainly whether a problem is your machine, your network, or the internet — in 60 seconds. Free.
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