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    If a hacker changes the data, they will also change the checksum to match; this will happen automatically, as the hacker will simply use the file system to make the change. Commented Dec 1, 2020 at 1:52
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    I can see that I should probably have reasoned some more before using that as an example :p however, my question still remains and now I am even further away from an answer :/ Commented Dec 1, 2020 at 2:02
  • Every hash function out there can spot some errors, and not others. Choose the one most likely to spot the kinds of errors expected for a given device operating in a given environment. Space is a different beast to terrestrial to hard drive to solid state. As for cryptographically secure this has no mean from a security perspective, they might trip up novices who physically extract the drive but that is about it. Commented Dec 1, 2020 at 3:04
  • Note that, if I am not mistaken, the latter two were specifically introduced as a very first step of supporting encryption. It shouldn't be too surprising that you need cryptographically secure hashes for encryption schemes. Commented Dec 1, 2020 at 6:54
  • @JörgWMittag, I will investigate what you say about supporting encryption further, thank you. I read that a strong checksum would be preferred for deduplication, but I do not know enough about that to have an opinion. Commented Dec 2, 2020 at 3:15