epictechz-lab does the date mentioned coincides with you running a Composer command or not?
You should make sure those files have not been tempered with. You can compare with original files on GitHub, or just delete vendor folder (or just rename it so you can compare later) and run composer install to download every one of these files fresh from the source.
If you still have issues with a fresh vendor folder, then you should look at the content of the files and the security rules to try to find what is being flagged. We can't exclude malware being pushed to Packagist but that's very unlikely, more likely it's a false positive or your server itself has been compromised and the files are modified by a process running on the server.
