Protection from fake asset issuance

Noob question, How Counterparty protects same asset issuance by third party?
Example. I issued XYZ asset and started trading. Using CP API and open source code is it possible by knowledgeable hacker to copy my XYZ asset parameters, make additional (fake) issue and inject X amount of it into trading? Thank you.

All XCP data stored in the blockchain is saved, and cannot be changed. The protocol then decodes this data and makes sure that it follows the specification. If it doesn’t follow the ‘guidelines’ of the protocol, it is simply ignored.

There is absolutely no way to create counterfeit assets, just as it is impossible to create counterfeit BTC. Unless its YOUR address creating these assets legitimately (which you are the creator/admin of), it simply won’t work.