Apple has announced a major overhaul of its bug bounty program that doubles the top reward to $2 million for exploit chains that can match the sophistication of mercenary spyware attacks. With bonuses for Lockdown Mode bypasses and vulnerabilities found in beta software, Apple says its total payouts could exceed $5 million. The company claims this represents "the largest payout offered by any bounty program." The program now places greater emphasis on complete exploit chains rather than individu...