Including the collector script multiple times causes race conditions

[Prinzhorn]

Basically when I include the script two times I get two e-mails, but with the same Probe UUID and Injection Key.

The solution is simple: wrap all of your own code (below the dependencies) in a IIFE. This way variables such as probe_return_data or contact_mothership are not in the global scope and don't mess with each other.

It's not critical, since at least something is collected and it does not crash. But I consider including it multiple times common in Blind XSS, since fields like first name, last name, bio, etc. might be rendered at the same time.