does WP have a function to ensure an uploaded image is really an image?

I’m pretty sure it’s this one. The page also shows what other WordPress functions use that validation.

https://developer.www.ads-software.com/reference/functions/wp_check_filetype/

That function uses MIME types to determine if it’s an image or not.

https://core.trac.www.ads-software.com/browser/tags/5.3/src/wp-includes/functions.php#L2620

Thanks but a file type isn’t a solid/secure way to ensure a jpg is really a jpg.
Isn’t there foolproof ways to ensure a hacker can’t upload a compromised file?

I’m guessing WP had figured out all that could be tried and figured out a way or code run or test to test the file is okay?

I saw a concept in PHP to use a function, like imagecreatefromjpeg or imagejpeg or exif_imagetype… that these type functions help “know or test” if a file says its a jpg, the function will ensure it is?

But again… I don’t know, which is why I’m asking ??

thanks