We design Mac hardware and software with advanced technologies that work together to run apps more securely, protect your data, and help keep you safe on the web. And with macOS Catalina available as a free upgrade, it’s easy to get the most secure version of macOS for your Mac.*

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Apple T2 chip.
The next generation of security.

The Apple T2 Security Chip — included with many newer Mac models — keeps your Mac safer than ever. The Secure Enclave coprocessor in the Apple T2 chip provides the foundation for Touch ID, secure boot, and encrypted storage capabilities. Touch ID gives you a seamless way to use your fingerprint to unlock your Mac, fill passwords in Safari, and make purchases with Apple Pay. Secure boot helps ensure that you are running trusted operating system software from Apple, while the Apple T2 chip automatically encrypts the data on your Mac. So you can be confident knowing that security has been designed right into the architecture of your Mac, from the ground up.

Apple helps you keep your Mac secure with software updates.

The best way to keep your Mac secure is to run the latest software. When new updates are available, macOS sends you a notification — or you can opt in to have updates installed automatically when your Mac is not in use. macOS checks for new updates every day, so it’s easy to always have the latest and safest version.

Protection starts at the core.

The technically sophisticated runtime protections in macOS work at the very core of your Mac to keep your system safe from malware. This starts with state-of-the-art antivirus software built in to block and remove malware. Technologies like XD (execute disable), ASLR (address space layout randomization), and SIP (system integrity protection) make it difficult for malware to do harm, and they ensure that processes with root permission cannot change critical system files.

Download apps safely from the Mac App Store. And the internet.

Now apps from both the App Store and the internet can be installed worry-free. App Review makes sure each app in the App Store is reviewed before it’s accepted. Gatekeeper on your Mac ensures that all apps from the internet have already been checked by Apple for known malicious code — before you run them the first time. If there’s ever a problem with an app, Apple can quickly stop new installations and even block the app from launching again.

Stay in control of what data apps can access.

Apps need your permission to access files in your Documents, Downloads, and Desktop folders as well as in iCloud Drive and external volumes. And you’ll be prompted before any app can access the camera or mic, capture keyboard activity, or take a photo or video of your screen.

FileVault 2 encrypts your data.

With FileVault 2, your data is safe and secure — even if your Mac falls into the wrong hands. FileVault 2 encrypts the entire drive on your Mac, protecting your data with XTS-AES 128 encryption. And on Mac systems with an Apple T2 Security Chip, FileVault 2 keys are created and protected by the Secure Enclave for even more security.

Designed to protect your privacy.

The most secure browser for your Mac is the one that comes with your Mac. Built-in privacy features in Safari, like Intelligent Tracking Prevention, help keep your browsing your business. Automatic strong passwords make it easy to create and use unique passwords for all the sites you visit. And iCloud Keychain syncs those passwords securely across all your devices, so you don’t have to remember them. You can also easily find and upgrade any weak passwords you’ve previously used (and reused and reused and reused).

Automatic protections from harmful sites.

Safari also helps safeguard you against fraudulent websites and those that harbor malware — before you visit them. If a website seems suspicious, Safari prevents it from loading and notifies you. And when connecting to unencrypted sites, Safari will warn you. So everything you need to browse without worry is right at your fingertips.

Find your missing Mac with Find My.

The Find My app combines Find My iPhone and Find My Friends into a single, easy-to-use app on Mac, iPad, and iPhone. Find My can help you locate a missing Mac — even if it’s offline or sleeping — by sending out Bluetooth signals that can be detected by nearby Apple devices. These devices then relay the detected location of your Mac to iCloud so you can locate it in the Find My app. It’s all anonymous and encrypted end-to-end so no one — including Apple — knows the identity of any reporting device or the location of your Mac. And it all happens silently using tiny bits of data that piggyback on existing network traffic. So there’s no need to worry about your battery life, your data usage, or your privacy being compromised.

Keep your Mac safe.
Even if it’s in the wrong hands.

I Alert For Mac Ios

All Mac models with the Apple T2 Security Chip support Activation Lock — just like your iPhone or iPad. So if your Mac is ever misplaced or lost, the only person who can erase and reactivate it is you.

macOS Security

Alerts

An alert appears when the system or an app needs to warn the user about an error condition, or a potentially hazardous situation or consequence. An alert is modal within an app unless it pertains to a single document or window, in which case it’s displayed as a sheet.

An alert may include the following elements:

ElementDescription
MessageA short summary of the error or condition that summoned the alert. All alerts include a message.
Informative textA complete description of the situation, its consequences, and ways in which users can address the situation. Informative text is optional but encouraged.
Response buttonsAn alert can include up to three buttons, one of which can be set as the default button, for canceling the alert or taking action.
IconThe system automatically shows your app icon on an alert. Custom icons are also supported. A caution symbol can be appended to the icon in alerts that require extra attention.
Suppression checkboxRepeating alerts can be configured to let the user suppress subsequent occurrences of the same alert.
Accessory viewIf your app calls for it, a custom view can be appended to an alert to provide additional information.
Help buttonIf your app offers Help documentation, you can include a Help button in your alert that takes the user to the documentation.

Minimize alerts. Alerts disrupt the user experience and should only be used in important situations like confirming purchases and destructive actions (such as deletions), or notifying people about problems. The infrequency of alerts helps ensure that people take them seriously.

Ensure that each alert offers critical information and useful choices. Alerts should warn people about an operation that can't be undone, and provide buttons that let users either proceed with the operation, or cancel, if they have changed their mind.

Avoid using an alert merely to provide information. Users don’t appreciate being interrupted by alerts that are informative, but not actionable. Instead of displaying an informational alert, consider other ways of presenting the information. For example, when a Mail server connection has been lost, Mail displays a warning indicator in the sidebar. Users can click the warning indicator if they want more information about the situation.

Use standard alerts. Users are familiar with the standard, system-provided alert style and understand its importance. Alert information presented in custom or nonstandard ways can be confusing and is less likely to be taken seriously.

Avoid displaying alerts for common, undoable actions, even when they’re destructive. Users don’t need to be alerted to potential data loss every time they delete an email or file. Actions like these are taken with the intention of discarding data and can be undone. On the other hand, an uncommon destructive action that can’t be undone should produce an alert in case the user didn’t intend to take the action.

Use the caution symbol sparingly. Overuse of the caution symbol in an alert diminishes its significance. Use the symbol only when extra attention is truly required, such as to confirm an action that might result in inadvertent or unexpected loss of data. Don’t use the icon for tasks whose only purpose is to overwrite or remove data, such as a save or empty trash.

Consider including an option to suppress future alerts of the same type. Users appreciate the ability to prevent future alerts from appearing for the same reason. For example, the user may be comfortable clearing their history without seeing repeated warnings. If you allow alert suppression, be sure to provide a way to reenable the alerts again, such as via a Show Warnings option in the View menu.

For developer guidance, see NSAlert.

Alert Text

Mac Virus Warning Pop Up

Provide a message that describes the situation clearly and succinctly. A message like “An error occurred” is mystifying and likely to annoy people. Be complete and specific, without being verbose. When possible, identify the error that occurred, the document or file it occurred in, and why it occurred.

Consider phrasing a message as a question when the default action has negative consequences. For example, a question such as “Are you sure you want to clear the history?” pinpoints the action that produced the alert and encourages the user to consider the results. Don’t overuse this type of alert, however. Users tire quickly of being asked if they’re sure they want to do something.

Supplement your alert message with informative text. Use informative text to expand on the message text by elaborating on consequences and suggesting a solution or alternative. Give as much information as necessary to explain why the user should care about the situation. When appropriate, remind users when an action can't be undone. Whenever possible, suggest how to fix a problem. For example, when the Finder can’t use the user’s input to rename a file, it tells them to try using fewer characters or avoid including punctuation marks.

Avoid sounding accusatory, judgmental, or insulting. People know that alerts notify them about problems and dangerous situations. As long as you use a friendly tone, it’s better to be negative and direct than positive and oblique. Avoid pronouns such as you, your, me, and my, which are sometimes interpreted as insulting or patronizing.

Avoid explaining alert buttons. If your alert text and button titles are clear, there should be no need to explain what the buttons do. In rare cases where you must provide guidance, preserve capitalization when referencing buttons, and don’t enclose button titles in quotes.

Alert Buttons

Apple Computer Virus Scam

Generally, use two-button alerts. Two-button alerts provide an easy choice between two alternatives. Single-button alerts inform, but give no control over the situation. Alerts with three or more buttons create complexity.

Mac Alert Form

Give alert buttons succinct, logical titles. The best button titles consist of one or two words that describe the result of clicking the button. As with all button titles, use title-style capitalization and no ending punctuation. To the extent possible, use verbs and verb phrases that relate directly to the alert title and message—for example, View All, Reply, or Ignore. Use OK for simple acceptance. Avoid using Yes and No.

Ensure that the default button title reflects the action the button performs. Avoid using OK for the default button unless the alert is purely informational. The meaning of OK can be unclear even in alerts that ask if the user is sure they want to do something. For example, does OK mean “OK, I want to complete the action” or “OK, I now understand the negative results my action would have caused”? A specific button title like Erase, Convert, Clear, or Delete helps the user understand the action they’re taking.

Apple Security Alert

Place buttons where people expect them. In general, the button people are most likely to choose should be on the right. The default button should always be on the right. Cancel buttons are typically on the left.

Label cancellation buttons appropriately. A button that cancels an alert’s action should always be labeled Cancel.

Mac

Include a Cancel button when there’s a destructive button. A Cancel button provides a clear, safe way to opt out of a destructive action. Consider making the Cancel button the default button, because doing so requires the user to intentionally click a button to continue with the destructive action.

Allow the Esc (Escape) key and Command-Period (.) keyboard shortcut to cancel alerts. Pressing Esc or Command-Period while an alert is visible should produce the same effect as clicking the Cancel button—that is, the alert is dismissed without performing any action. If your alert doesn’t have a Cancel button, consider implementing a cancel action in your code that runs when Esc or Command-Period is pressed.

Consider offering time-saving keyboard shortcuts for all buttons. For example, you could let people activate a Print button by pressing the P key, or a Don't Save button by pressing the D or Delete key.