Sanctum.nu presents itself as a login portal where you enter a passphrase and an authenticator code. That kind of page should inspire immediate confidence, but the signals are mixed at best. The domain was registered just two days ago with the owner's identity kept private in WHOIS records, which is unusual for a service handling sensitive authentication data. While the site does have privacy terms and a legal disclosure, the lack of any contact information or social media presence makes it hard to verify who runs it.
For a site like this, you'd expect to see a longer operating history, transparent ownership, and modern TLS configuration across the board. Here, the server still accepts outdated encryption methods that major browsers stopped supporting years ago. The combination of extreme newness, hidden ownership, and a non-trivial security gap is enough to recommend staying away until the site demonstrates real legitimacy. If you're investigating sanctum.nu, look for independent reviews or a way to contact support before trusting it with your credentials. At this point, the risk is too high to call it safe.