Lockdown Mode is Apple's extreme security feature designed to block sophisticated cyberattacks on iPhones and other Apple devices. Apple is now offer a massive bounty $2 million for disclosing 0-day remote exploit, potentially reaching over $5 million with bonuses to any researcher who can bypass Lockdown Mode using a remote "0-click" exploit. https://security.apple.com/blog/apple-security-bounty-evolved/
