SHA1 insecurityHere one can check all sort of files against a so-called colission attack:
https://shattered.io/The test has been developed in cooperation with the Dutch CWI (Centrum voor Wiskunde & Informatica).
Also Google developers were involved.
Within most modern browsers like Google Chrome and also inside the Firefox browser,
we have been protected against insecure TLS/SSL certificates over the last three years.
Only it is a pity that whenever you will download Firefox browser,
the signature over that particular binary still exclusively will make use of insecure SHA1.
Get the checksum from the master repro and the actual download from a fast mirror.
Normally files now come digitally signed.
Now consider the above check as a checking method against silent file corruption,
so also with a digital file signature you could check at shattered.io,
Enjoy, my good friends, enjoy,
polonus (volunteer 3rd party cold recon website security analyst and website error-hunter)