The fastest, most secure browser? Microsoft Edge apparently
https://www.theregister.co.uk/2018/12/13/secure_browser_microsoft_edge/
Microsoft may have taken the decision to ditch the Edge's browser engine for Google's Chromium too soon.
According to the Security Council of Certificate Authorities (CASC), the current Edge browser is in fact the fastest and more secure browser on the market when it comes to identifying and blocking dodgy websites.