Your API accepts requests. Those requests should be signed or authenticated to prove they came from legitimate British IPTV apps. Most generic IPTV Reseller Panel solutions skip signature verification entirely. Any request that looks roughly correct gets processed. Your stream endpoints are accessible to anyone who guesses the URL pattern. Attackers scan for open endpoints. They find yours. They stream without paying. Your bandwidth bill balloons. A British IPTV-optimized panel implements request signing for every API call. The subscriber's app signs each request with a key derived from their credentials. Your panel verifies the signature before processing. Forged requests are rejected before they consume resources. I've watched a reseller discover that 30% of his bandwidth was going to unauthorized clients—people who had never paid but had guessed or scraped his panel's API patterns. A British IPTV panel with signature verification would have blocked every unauthorized request automatically. The pattern is simple: your IPTV Reseller Panel either verifies requests or trusts everyone. Trusting everyone is not a security policy. It's an invitation.