From the data at https://analytics.usa.gov/data/live/browsers.json , Microsoft Edge has more than 2x the users of Firefox (322,890,632 vs 143,040,483).
`totals.browser` contains user agents (or something similar). Why are there (personal?) email addresses in there as well? Who sets that as their user agent?
Might be some programming exercise. It's a common network programming exercise to build a HTTP client using bare sockets. But they don't look like student email addresses.