Apple has blocked Flash, unless users install a security update. The latest security update addresses “vulnerabilities that could cause a crash and potentially allow an attacker to take control of the affected system” Adobe says it is aware of reports that Flash (SWF) content is being exploited in the wild in attacks delivered via malicious Flash content hosted on websites that target Flash Player in Firefox or Safari on the Macintosh platform. Users are given the option to download the update from Adobe’s website or click on OK.”]
Source: https://www.csoonline.com/article/2132948/apple-blocks-flash-on-macs.html