However, most users will use the browser's update function.
A user could indeed use a new installer each time a new Firefox version appears. This means that Mozilla creates a digital fingerprint every time Firefox is installed and actually every time Firefox is started, which could be used for tracking. of the two downloads in HashMyFiles (see the following figure).Īlthough both downloads have an identical file size and were downloaded within seconds of each other, it is immediately apparent in the above figure that the digital fingerprint in the form of the hash values (MD5, SHA1, SHA256, etc.) and the CRC32 value are different. Then I displayed the MD5 and hash values (SHA1) etc. I did a quick test and downloaded the Windows installer from the Mozilla Firefox download page twice in a row. The mechanism is briefly mentioned in the Bugzilla bug tracker – and describes here that the hash value generated this way is unique for each installation.
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