Always prefer free and open source software ( which macOS is not). Care should be taken when installing new software.Ultimately, the security of a system can be reduced to its administrator.Verify backups work by testing them regularly, for example by accessing certain files or performing a hash based comparison.
Always encrypt before copying backups to external media or the "cloud".Create regular backups of your data and be ready to reimage in case of compromise.This will mitigate damage in case of compromise and data exfiltration.In addition to full disk encryption, create one or many encrypted containers to store passwords, keys, personal documents, and other data at rest.Subscribe to announcement mailing lists (e.g., Apple security-announce) for programs you use often.macOS system updates can be completed using the App Store application, or the softwareupdate command-line utility - neither requires registering an Apple account.Patch, patch, patch your system and software.Study and recognize threats and how to reduce attack surface against them.What are you trying to protect and from whom? Is your adversary a three letter agency (if so, you may want to consider using OpenBSD instead), a nosy eavesdropper on the network, or determined apt orchestrating a campaign against you?.The standard best security practices apply: If you wish to make a correction or improvement, please send a pull request or open an issue.
Only you are responsible if you break a Mac by following any of the steps herein. This guide is provided on an 'as is' basis without any warranties of any kind. There is no one single technology, software, nor technique to guarantee perfect computer security a modern operating system and computer is very complex, and requires numerous incremental changes to meaningfully improve one's security and privacy posture. This guide is targeted to “power users” who wish to adopt enterprise-standard security, but is also suitable for novice users with an interest in improving their privacy and security on a Mac.Ī system is only as secure as its administrator is capable of making it.
This guide is a collection of thoughts on and techniques for securing a modern Apple Mac computer ("MacBook") using macOS (formerly known as OS X) version 10.12 "Sierra", as well as steps to generally improving privacy.
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