Don’t let your employees give away secret information for free. This handy decision tree shows employees the potential pitfalls of social media use while working on highly confidential matters.

Postings pics, tagging coworkers/vendors, checking in—all normal social media stuff. But your competitors can start putting 2 and 2 together from that public info and gain some critical information about corporate strategy or R&D work. Train your folks in sensitive roles with this easy guide that as long as they’re on a secret project, they should be extra cautious when posting online.