You don't "get" a bug. It's not like a virus or malware. This is an exploit that means that the secure channel you establish with your bank, for instance, can be compromised, en route, and from your machine, it could look like you're communicating securely with your bank, when in reality you're passing all of your clicks and typing to a third party. This is known as a "man in the middle" attack. There's no "tell" if it's happening to you, before or after. You'll wake up one morning, you bank accounts will be drained, your email will be compromised, everything secure will be compromised.
Well then .. I guess it’s not really a BUG is it.