cassie.web.asu.edu is a subdomain hosted under Arizona State University's .edu domain. That alone gives it more credibility than an unknown commercial site would have. But right now the site returns a 404 error, meaning there is no live content to evaluate.
If this was a personal project or academic page that is no longer maintained, the lack of contact info and legal pages is perfectly normal. The site has a valid security setup and no history of abuse. There's no indication that it's a scam or fake.
If you were hoping to find a working site, you'll need to check back later or look for an updated link from ASU. For anyone worried about safety, there's nothing here to be suspicious of — just an empty page behind a reputable institution's domain.