How I Secured WordPress Media Files by Building My Own Upload Restriction Plugin Security is one of those things you don't think about deeply until something breaks badly. For me, that moment came while managing multiple high-traffic WordPress websites. Sites that were running fine — until they weren't. Slowing down. Getting unstable. Eventually crashing. The culprit? Unrestricted file uploads. The Problem — What Was Actually Happening WordPress is flexible by nature. And that flexibility, if left unchecked, can become a serious vulnerability. On high-traffic sites, users interact with forms, media uploaders, and search inputs constantly. Even with proper input escaping and sanitization in place, there are edge cases — scenarios where those defenses don't fully catch what's coming through. And attackers know this. Here are the real attacks that happen when file upload restrictions are weak or missing: 1.…