Am I the only one this is happening to? I’m trying to build my portfolio page and for some reason, people have been going in to my page and editing it. Its really driving me crazy. It happened to my tribute page too. What gives!!! Now I’m spending precious time trying to debug whatever it is that they are trying to do! FML!
Change your password. I can’t think of any other way that this could happen. No one can make edits to your pens.
Yeah, as @PortableStick says, there is no real reason why this should be possible unless you have shared your password or left you computer session logged on in a shared environment.
People can fork your pen and do their own work on it, but that won’t mess with your original.
Change your password (and change passwords anywhere else you use the same password) and if the problem persists contact Codepen’s support team, since it would indicate a pretty major problem on their end.