While it might be tempting to use cracked or outdated NTS servers, the risks associated with this approach far outweigh any perceived benefits:
She argued with it. "If you can tell me that ice cream will drop, why not warn the kid?"
The term "crack" likely refers to exploits like or buffer overflows , while "upd" refers to critical security updates issued to mitigate these risks. The Evolution and Vulnerability of Network Time Systems