Yes -- the FBI has no mission to protect the public good. Their job is not to defend ordinary Americans against cyber attacks. That&#x27;s a different governmental agency, if such an agency even exists (I know there is a defensive part of NSA that does things like SELinux and hardening redhat, etc).<p>The job of the FBI is to detect and prosecute crimes under their jurisdiction. They&#x27;ve decided they can better do their jobs keeping the 0-day secret than disclosing it -- if it&#x27;s kept secret, it makes it easier for criminals to commit more crimes for them to prosecute, and simultaneously gives them more investigative tools, win win.