Mitchell Baker (présidente de la fondation mozilla), affirme que le modèle de développement même de Mozilla est plus sûr que celui de Microsoft et qu'il n'y a pas de relation de cause à effet systématique entre part de marché et sécurité.
L'article : We're more secure than Microsoft
"There is this idea that market share alone will make you have more vulnerabilities," Baker said. "It is not relational at all."
Part of Firefox's better security profile comes from how it is developed, compared with Internet Explorer, she said. "Not being in the operating system is a phenomenal advantage for us," Baker said.
In general, classic code flaws tend to be fairly easy to fix once they are found, she said. More difficult problems to guard against are the ones that exploit human behavior, like phishing. "In some of these cases, the solution is very difficult to determine," she said. "There are some circumstances where the speed won't be as fast."