Sutrovax.sharepoint.com isn't a standalone website — it's a Microsoft SharePoint site, likely used by a company called Sutrovax for internal document sharing and collaboration. That explains almost everything you see in the signals. The site immediately redirects to Microsoft's official login page, because SharePoint requires a Microsoft 365 account to access its content. That's standard behavior, not a red flag.
For a private SharePoint site, you won't find public contact pages, a web archive history, or a Trustpilot profile — those things simply don't apply. What matters is that the site is hosted on Microsoft's own network, uses up-to-date encryption, and hasn't been flagged by any security databases. The robots.txt file blocks all crawlers, which is normal for a site that isn't meant to be indexed.
If you're wondering whether sutrovax.sharepoint.com is safe to use for work purposes, the answer is yes. It's a standard part of Microsoft's cloud ecosystem. Just ensure that you're logging in through the legitimate Microsoft login page — which is exactly where this site sends you.