Using the latest build of Ares Wizard is legal. However, older versions may not be — this is because they could be used to access pirated content, which is why it was eventually taken down via legal action. While the current build may be legal, keep in mind that Ares Wizard is a third-party addon — it’s possible hackers could exploit your connection via the service. That’s why I always recommend using a quality VPN with Ares Wizard to stay secure.