Evaluate the support and documentation provided by the product developers:
Nulled software is rarely "clean." To bypass license checks, developers often inject malicious code, backdoors, or web shells
The installation was suspiciously smooth. Within an hour, his dashboard was sleek, managing invoices and provisioning virtual servers with a grace his old system lacked. For three days, Leo felt like he’d pulled off the heist of the century. He even spent the money he saved on a high-end mechanical keyboard. On the fourth night, the "hot" deal turned into a wildfire.
It started with a single support ticket: "Why is my credit card being charged by a site in Eastern Europe?" Then another: "I can't log in, password changed."