Why iPhone users should update and restart their devices now

On December 12, 2025 Apple released patches for two WebKit zero‑day vulnerabilities actively exploited by mercenary spyware that enable remote code execution via malicious web content; the advisory urges iPhone 11+ users to upgrade to iOS 26.2 (which contains the fixes and new memory protections), restart devices to flush memory‑resident malware, and follow hardening steps (avoid unsolicited links, enable Automatic Updates and Lockdown Mode) because adoption of iOS 26 remains low and many devices are still exposed.