Security

In computing, security is protection against unauthorized access to, or alteration of, information and system resources including CPUs, storage devices and software.

Computer security terms

 * - ensuring that users can access the resources, and only the resources, that they are authorized to.
 * - determining whether a user is who they claim to be.
 * - preventing unauthorized access; integrity - preventing or detecting unauthorized modification of information.
 * - an important technique used to protect data security.
 * - proof that a message came from a certain source.
 * Privacy - allowing people to know and control how information is collected about them and how it is used.
 * / availability - ensuring that a system is operational and accessible to authorized users despite hardware or software failures or attack.

Security can also be considered in the following related terms:
 * - protecting network and telecommunications equipment, protecting network servers and transmissions, combatting eavesdropping, controlling access from untrusted networks, firewalls, and intrusion detection.
 * - who is authorized to do or responsible for doing what and when, who can authorize others to do what and who has to report what to who.
 * - hiring employees, background screening, training, security briefings, monitoring and handling departures.
 * - what else can touch the system to affect it, protection against the physical environment - heat, earthquake, etc.
 * - User access and authentication controls, assignment of privilege, maintaining file and filesystem integrity, backup, monitoring processes, log-keeping, and auditing.

Usage in Apple platforms

 * iOS and iPadOS users can secure their mobile device by setting Face ID or Touch ID along with a passcode.
 * macOS users with administrator permissions can access the Security & Privacy pane of System Preferences. Passwords can be set in the Users & Groups pane.
 * An Apple ID can be used to enable Activation Lock on a supported iPhone, iPad, or Mac for further protection in case it is stolen.