MacSync malware has developed a new variant capable of bypassing macOS Gatekeeper security, according to a tweet by SlowMist's Chief Information Security Officer, 23pds. This variant employs techniques such as file inflation, network verification, and self-destruct scripts post-execution to evade detection. It poses a significant risk by stealing sensitive data, including iCloud keychains, browser passwords, and cryptocurrency wallets. Mac users are advised to exercise caution and avoid downloading software and plugins from unverified sources.