There&#x27;s a W3C rule, that each browser needs their own implementation. If everybody uses the same code, it&#x27;s considered a Monoculture security risk [1].<p>1. <a href="https:&#x2F;&#x2F;www.schneier.com&#x2F;blog&#x2F;archives&#x2F;2010&#x2F;12&#x2F;software_monocu.html" rel="nofollow">https:&#x2F;&#x2F;www.schneier.com&#x2F;blog&#x2F;archives&#x2F;2010&#x2F;12&#x2F;software_mono...</a>