avast! FileRep

Our cloud-based avast! FileRep feature maintains reputation data on millions of files, so we can warn you of a file’s reputation before you open it.

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Reputation warning system

AVAST Software designed FileRep to counter the growth of the polymorphic malware. Now with more than a billion unique files in our cloud, and more added daily, avast! FileRep technology lets you know whether a file is safe before you open it – determined in part by how many people have the file and how new the file is. The technology is also used internally, to help your avast! software’s scanning engine make more intelligent decisions by allowing it to skip clean files and more quickly detect potential malware and new ‘zero-day’ threats.

How it works

avast! FileRep is a database of executable files sourced from avast! Customers who have agreed to anonymously participate in the service. The files (or, rather, their hashes – i.e., identified versions of the files) are stored and evaluated for the purpose of determining which are infectious and for updating virus databases. Two key data categories tracked in FileRep are file age (emergence) and the number of computers that have already opened it (prevalence). Additional data categories tracked in FileRep are file distribution, the source URL, and digital signature status. The data is contributed anonymously by CommunityIQ members, the avast! customer network of anonymous front-line ‘sensors’.

avast! FileRep Stats

Our FileRep database contains the reputation data of more than 2.5 billion files.

Every second we scan an average of 22.5 thousand files for our users.

Scans feel almost instant since it only takes 0.5 seconds to perform a scan.

Get FileRep when you get avast! antivirus

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Your browser is obsolete.

1. On 8 April 2014, Microsoft stops support for Internet Explorer browsers running on Windows XP. This will put your computer and data, such as credit card and online banking details, at greater risk to hackers and malware.

2. Several browser alternatives exist, but we at AVAST use and recommend Chrome, as we find it to be the most-secure option available.