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Using an iPhone / iPad / Mac?

Do this: Update to macOS 11.5.1 and iOS/iPadOS 14.7.1 immediately.
Why: A 0-day, tracked as CVE-2021-30807, is a memory corruption vulnerability that may allow an attacker to execute arbitrary code in kernel space on the device.
Additional Info: Apple's macOS security update: https://support.apple.com/en-us/HT212622
Apple's iOS / iPadOS security update: https://support.apple.com/en-us/HT212623

About the Author

Matt Barnett, CISSP, GFCA
Chief Strategist & Cofounder

After years in IT, performing network and system administration, software development, and architecting cloud migrations, Matt began to focus his efforts in cybersecurity. Matt draws on his technical competency and law enforcement background to assist clients, in both proactive and incident response capacities. In addition, Matt has developed an arsenal of applications, strategies, policies, and procedures to assist clients in achieving better cybersecurity.