After installing Crysis 1, I looked in my Registry and noticed that it installed SecuROM in there.
HKEY_CURRENT_USER\Software\SecuROM\basic64

I tried deleting this file, but after running the game again, SecuROM automatically reinstalled itself. This needs to be fixed right away.

May I ask... what's the problem with this ?
I saw I had it too :P

Well SecuROM is a notoriously malicious DRM that is incredibly difficult to get rid of. I tried deleting the SecuROM entries in my Registry, only to find out they reappear when you run Crysis again. Why is Crysis putting these entries in the Registry in the first place?

Oh, but again (sorry ^^"), I don't get what is the problem ? (I really don't see why it is problematic : it could prevent the game to function well for example ?)(Of course, I totally agree that a DRM-free game who installs a DRM isn't a good thing ;))
This, I don't know... And I don't know too why GOG didn't fixed this ? (especially if the issue was here with another game sold here)
(sorry for the off-topic by the way, and thanks for explaining :))

SecuROM can be a problem because it's known for putting undeletable files in the Registry and in hidden folders on computers. I don't know if this SecuROM listed in the Registry is a dummy file or not, but it's still a concern. I hope GOG will look into this issue.

Just for the record , the registry is just a database , there's no files, just entries.

and when SecuROM was used a lot, there were some uninstallers to remove it (there were different versions, since there were different versions of SecuROM)

So ultimately if a game installs those drivers it's possible to remove those , when you stop to use such game (it was written by the creators of the copy protection).

https://en.wikipedia.org/wiki/SecuROM

look for SecuROM removal tool.

now there's a good sign if the game install it : this copy protection doesn't work on Windows 10 & Crysis has Windows 10 listed as OS.... sooo.

The biggest complaint about SecuROM; it' was a rookit, so it created a security hole , if the others complaints weren't enough.

As you have been told before sometimes these files are left dormant, this does not mean SecuROM is actually installed. Rather these are left over files normally, meaning the DRM has effectivly been disabled.

Now I'm not saying it's not possible DRM slipped through, seeing as it seems to have happen with Crysis Warhead and the chicken issue because EA is the one who "supposdily" disabled the DRM. But I've looked through all my files and only this registry entry is created, there are no SecuROM folders as far as I can tell, and the registry isn't even set to a value.

Seems like you like bringing this up, even though it seems to be a non issue....

https://www.gog.com/forum/general/fear_installed_securom_all_over_my_computer_does_anyone_know_how_to_get_rid_of_it/?staff=yes

I don't "like bringing this up," I just don't want to see SecuROM in my Registry or anywhere on my computer. Many in that FEAR thread agreed with me, and unfortunately GOG never removed the FEARMP.exe file that was installing SecuROM. I had screenshots listed here.

It's a empty folder (64bit), can be deleted once the games has been uninstalled.
But looks like the 32bit version has leftovers...for warhead.

Edit to be clear.

Your litterally complaining about few KB/MB of hard-drive space that does nothing. It's a simple as that really. GOG never said games would be clear of old files left over by disabled DRM. They said the games would be DRM free, which they are (at-least in this instance).

EDIT:

Correction: Certain versions of SecuROM won't work on Windows 10, so it's possible Cyrsis was using a version that would work. These still appear to be nothing more than dormant files however. Updated original comment to reflect that.

So if they can fix the 32-bit version of Crysis: Warhead, shouldn't that mean they can fix the problem with Crysis 1?

Nice, free DRM crap in a DRM-free release!
2 birds at once, GOG.
I love me some hypocrisy.

These are two entirly different issues... there is nothing to fix in Crysis 1 (as far as we know). GOG has already gave you an answer (if indeed these are dormant files), your just not happy with it.

BKgaming is correct, different issues, crysis 1 isn't installing anything but a empty folder.
It wouldn't run on win 10 if it had any, i'm running 10 & 7 still use XP too :P
Just a empty folder...for crysis one, nothing else.

How long it takes gog to fix warhead i don't know...

That key doesn't show up in a 32-bit Wine prefix. It must only get installed if you run the 64-bit binary.