Apple is introducing what it calls its PQ3 cryptographic protocol, a new form of encrypting users’ messages that will exist alongside Apple’s existing encryption tools. The reason for the move, Apple says, is to prevent what are referred to as “harvest now, decrypt later” attacks. According to Apple, while it’s difficult to break the company’s current encryptions using conventional supercomputers, quantum computers could make cracking those encryptions child’s play. Apple is banking on that “Q-day” coming sooner than later and is working to ensure iMessages are protected. Importantly, Apple says there are no motivating factors behind the move to roll out quantum computing protections. Rather, it’s a proactive move designed to upgrade the app’s overall security posture.