Generally speaking, I'm looking at a business environment. I know that Facebook Ads are not vetted and can contain malware, also users can share files on some social media sites. But what else is there? And are there any practical solutions to these problems?
closed as too broad by schroeder♦ Jul 25 at 18:52
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As you said, the main threats on Facebook are the ads and malicious links/files users can share between each other. In terms of Ads, you can use an ad-blocker such as uBlock Origin or AdBlock, which as the name suggest will remove any side-bar ads.
In terms of not clicking malicious/suspicious links, well, that's down to the user, as long as they are well informed then there's not too much else you can do - it's assumed they don't open spam e-mails and click those links, so perhaps explain to your users that they should treat suspicious Facebook links in the same manner.
As already mentioned, the real, and perhaps most dangerous threat is one that you cannot prevent or guard your users against, which is social engineering. It helps to keep your private life private but unfortunately not everyone considers that, which makes Facebook a real goldmine for anyone with time on their hands and a malicious intent.