Hi,
I'm developing a website and I'm securing it from XSS, SQL Injection, etc.
In some places in my site, user can upload files.
I limitted the files extensions to images, text, pdf and zip...
But I'm worried about the files that will be uploaded to be executive files with image extension.
I mean a hacker could write codes in jpeg images and uploads them to my site.
How could I prevent that?
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