(Sticky Comics/Christiann MacAuley)
Or to be safe, do the first three: purge your social media, lock it down, then run a dummy. LinkedIn at work, Snapchat at home, and never the twain shall meet.
Every semester, I have my students try to find dirt on themselves online. I teach them my personal rule on the subject: assume that everything that you post online can be read by everyone in your life, or who will ever be in your life.