There&#x27;s nothing wrong with server side Java...<p>Quick glance through the code doesn&#x27;t reveal any major risks, actually seems to be fairly well written. Author seems to like to write a lot of static methods&#x2F;utility classes rather than rely on composition using dependency injection... not exactly a modern development style but it&#x27;s good enough. Author avoids needless abuse of software patterns. It&#x27;d be pretty easy to do a security audit on this code base.