I got tired of people posting a link to something written by a guy called madaidans, about firefox security vis-a-vis chrome, claiming that chrome is much more secure because of some very fundamental design issues
I distinctly recall at least FOUR zero-days for chrome in the last few weeks/months, and none at all for firefox, so I got pissed off seeing the same rubbish every few days from someone else who has discovered that url
anyway, that url is the "theory", but we know theory and practice don't always match
here's the "practice". Just download the CVE data for 2021, from https://nvd.nist.gov/feeds/json/cve/1.1/nvdcve-1.1-2021.json.gz (or indeed any other similar file from https://nvd.nist.gov/vuln/data-feeds -- different time periods are available), then run this program (same name as this file, but without the ".md" at the end) on it
the numbers for 2021 (up until today, 2021-10-11) are:
CRITICAL HIGH MEDIUM
chrome 20 154 67
firefox 1 39 40
look at the numbers for "CRITICAL" -- that's a heck of a lot of CRITICAL issues for something that has fundamental design superiority over firefox