Plugin that disable uploads and downloads?

Question

PHP

You need a plugin for Windows (or Google Chrome) that would prohibit uploading files to the Internet (social networks, forums, clouds, file sharing), or make it possible when you enter a password.

Answer 1

Well, with the plugin, it's definitely a span, because the plugin can be easily disabled. It is possible to try to use Firewall.
For example here kb.cyberoam.com/default.asp?id=1707

Answer 2

Block the access of the browser process to all storage media on the PC with a security policy.

Answer 3

I would put a proxy, close upload on it and force the browser to go only through it. Discussion of the squid setup to google for 5 minutes.