On November 20th, Apple released an emergency security update to fix two zero-day vulnerabilities for Intel-based Mac users. These vulnerabilities involve WebKit and JavaScriptCore engines, which can trigger arbitrary code execution through malicious web pages or emails, allowing attackers to implant malicious software on devices. The vulnerabilities are CVE-2024-44308 (JavaScriptCore vulnerability) and CVE-2024-44309 (WebKit vulnerability), which were discovered by Google's Threat Analysis Team and are implied or related to national-level hacking activities. Apple recommends that users update macOS Sequoia 15.1.1 and the latest iOS and iPadOS versions as soon as possible to prevent security risks.