Cerberlab.net is a site that has been around for over nine years but says almost nothing about itself. The homepage shows only a smiley face, and the site blocks search engines from crawling it. That combination can be puzzling, but for a personal or experimental project it's not necessarily suspicious.
So is cerberlab.net a scam? There's no sign of that. The domain is clean on blacklists, has a valid SSL certificate, and hasn't been flagged by Google's Safe Browsing. The site doesn't sell anything, collect data, or ask for logins, so there's little risk in visiting. The lack of an about page, contact info, or privacy policy is perfectly normal for a non-commercial hobby site.
What you should take away: cerberlab.net reviews from a trust perspective suggest it's most likely harmless but also a black box. If you stumbled on it looking for a service, you won't find one. If you're just curious, there's nothing dangerous here, just not much to see.