The domain sso-223a549e.sso.duosecurity.com isn't a typical website you'd browse — it's an authentication gateway. It redirects to a login page for CMC Markets, a real financial trading platform, via Duo Security's multi-factor authentication service. For a page like this, you don't need an about page or contact form. What matters is the underlying security, and this site has it: a valid certificate, enforced HTTPS, and clean reputation records. The server header even identifies itself as Duo, confirming it's part of that legitimate infrastructure.
If you landed here after logging into CMC Markets, that's expected. The bots.txt file blocks crawlers, which is actually a good sign for an authentication endpoint. There are no signs of a scam or fake page here. While there's no Trustpilot profile or Wayback Machine history for this specific subdomain, that's normal for a transient auth URL. For a technical redirect, this looks exactly like what it should be: a secure stepping stone to a real service.