2. Add a complex root passphrase and clean this up after the fix is released.
3. Reflect on how irresponsibly this serious security bug was ‘reported’, he didn’t just potentially miss out on $200,000, he put an enormous number of people at risk of local intrusions when instead if it was properly reported there’s a good chance Apple would have released a bug fix for this quicker thus reducing the potential impact and spread of misinformation.
https://en.m.wikipedia.org/wiki/Responsible_disclosure
https://support.apple.com/en-au/HT201220 (See ‘Security and privacy researchers’)