Right now, vosen.github.io doesn't actually have a working website — it shows a standard GitHub Pages 404 error. That's the first and biggest red flag. For a personal blog or portfolio site, which this likely aims to be, a 404 isn't a sign of a scam, but it means there's nothing to evaluate. The domain uses Fastly's CDN and has valid encryption, which are positive technical signals, but they're wasted on a site that serves no content.
What's more telling is the complete absence of an about page, contact information, or any web archive history. Even a legitimate personal project typically leaves some footprint or at least an introduction when it goes live. Here, there's no way to know who built the site, what it's for, or whether it will ever actually function.
If you're wondering whether vosen.github.io is fake or a scam, the honest answer is that there isn't enough information to call it either. But a site that doesn't exist yet can't earn your trust. If you revisit later and find actual content, check for a clear about page and contact details before engaging further. For now, there's nothing here to interact with.