We know that the internet isn’t a scary place, but it’s important to remember that interacting with people online can get complicated. Relationships and friendships can be confusing, and when you’re talking to someone online, it can be especially hard to figure out what the other person is actually thinking.

Unfortunately, there’s no app that sends you a every time a conversation is getting kind of risky. But by knowing some warning signs, safety rules of thumb, and what to do if you do feel uncomfortable, you can help protect yourself and your friends.