If you've arrived at jslg-my.sharepoint.com, you're looking at a Microsoft SharePoint site that requires a login. That redirect to Microsoft's authentication page is standard behavior for any SharePoint tenant, not a sign of anything shady.
What matters is that the underlying infrastructure is unmistakably Microsoft. The site resolves to Microsoft-owned IP addresses, uses a valid certificate, and enforces modern security protections. There are no blacklist reports or Google Web Risk flags. This isn't some random domain pretending to be something it's not — it's a genuine part of the Microsoft 365 ecosystem.
For anyone asking "is jslg-my.sharepoint.com a scam?": the evidence says no. It's a normal SharePoint login page. If you're a user of this tenant, proceed as you would with any corporate SharePoint site. Just be sure you're on the real login page and not a lookalike — check the URL starts with https://jslg-my.sharepoint.com before entering credentials.