How To Tell If You Are Being Hacked Mac

Mar 25, 2020 If you think your Apple ID is compromised, use these steps to gain control of it and review your account information: Sign in to your Apple ID account page. If you can't sign in or you receive a message that the account is locked when you try to sign in, try to reset or unlock your account. Sep 19, 2016 You do that so that people who don’t have authority don’t look at you. I think that’s a good thing.” He said this while speaking at a conference. Looks like Mark Zuckerberg had the right idea. But come on, no-one is spying on little old me, right? Are you confident you’d be able to tell if your Mac’s camera was hacked? May 11, 2020 If you see six MAC addresses — any device connected to your network will have its own unique MAC address — but only have four devices in your.

Signs your Apple ID has been compromised

Your Apple ID might be compromised if you receive an account notification from Apple for a change you didn't make, or if you notice account details or changes you don’t recognize. For example:

You receive an email or notification that your Apple ID was used to sign in to a device you don't recognize or did not sign in to recently (for example, 'Your Apple ID was used to sign in to iCloud on a Windows PC').
You receive a confirmation email from Apple that your Apple ID password was changed or your account information was updated, but you don’t remember making any changes.
Your device was locked or placed in Lost Mode by someone other than you.
You see messages you didn't send, or items you didn’t delete.
You see charges or notices for purchases that you didn't make. Learn what to do if you see an unfamiliar iTunes Store or App Store charge on your credit or debit card statement.
Your password no longer works, or it might have been changed or locked.
You don't recognize some or all of your account details.

If you received an email, text message, or phone call that you're not sure is valid or you think might be phishing, here are some tips to help determine its legitimacy.

Gain control of your Apple ID

If you think your Apple ID is compromised, use these steps to gain control of it and review your account information:

Sign in to your Apple ID account page. If you can't sign in or you receive a message that the account is locked when you try to sign in, try to reset or unlock your account.
Change your Apple ID password and choose a strong password.
Review all the personal and security information in your account. Update any information that isn't correct or that you don’t recognize, including:
- Your name.
- Your primary Apple ID email address.* If you need to change your email address, update the features and services that you use with Apple ID, so that each one is using your updated Apple ID.
- All alternate email addresses, rescue email addresses, and phone numbers.
- The devices that are associated with your Apple ID, if you've already set up two-factor authentication.
- Security questions and answers. If you think they might be easy to guess, you should change your security questions.
Check with your email address* provider to make sure that you control every email address associated with your Apple ID. If you don't control the email addresses associated with the Apple ID, you should change the password for the email address or use a different email address.
Set up two-factor authentication for your Apple ID. This additional security feature is designed to prevent anyone from accessing your account, even if they know your password.

* In China mainland and India, you can use your phone number as your Apple ID.

If you completed the steps above and think your account might still be compromised, contact Apple Support.

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Know which Apple ID is signed in to your device

If you're signed in on your device with an Apple ID that you don't recognize, use these steps to sign out, then back in with a different Apple ID. To make sure that you're signed in to Apple IDs that only you control or trust, you can check the following settings on each of your devices:

iPhone, iPad, or iPod touch:

Settings > [your name]
Settings > [your name] > iTunes & App Store
Settings > Messages > Send & Receive
Settings > FaceTime

Mac:

System Preferences > Apple ID
System Preferences > Internet Accounts
Messages > Preferences > Accounts
Facetime > Preferences > Settings
Mail > Preferences > Accounts
Calendar > Preferences > Accounts

You should also check iCloud for Windows, your AirPort Time Capsule or other AirPort Base Station, and your Apple TV (for iCloud Photos or Home Sharing).

Make sure your Apple ID is secure

Because you use your Apple ID for so many Apple products and services, you should make sure that your Apple ID is as secure as possible. You should be the only person who knows your password and can sign in with your Apple ID. If someone you don’t know or don’t trust can sign in with your Apple ID, your account is not secure.

Your Apple ID might not be secure for the following reasons:

Someone else created an Apple ID on your behalf, or you’re using an Apple ID that was already signed in when you received your device.
You’re sharing an Apple ID with family or friends. Your Apple ID is your personal account. If you want to share purchases with a family member, use Family Sharing. With Family Sharing, you can share a calendar, photos, reminders, and more without sharing your Apple ID.
You don’t recognize the Apple ID that is signed in on your device.
You shared your password with someone else intentionally or unintentionally. For example, someone else selected your password for you, you told someone your password, or you entered your password on a phishing site.
You don't have control of the email address or phone number associated with your Apple ID.
Your password is weak or is compromised.
You share your devices with someone else, your devices are not protected by a passcode, or your passcode is easy to guess.

If any of the above are true, you should reset your password as soon as possible and review your account information.

This article describes some of the commonly used features of Activity Monitor, a kind of task manager that allows you see how apps and other processes are affecting your CPU, memory, energy, disk, and network usage.

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Open Activity Monitor from the Utilities folder of your Applications folder, or use Spotlight to find it.

Overview

The processes shown in Activity Monitor can be user apps, system apps used by macOS, or invisible background processes. Use the five category tabs at the top of the Activity Monitor window to see how processes are affecting your Mac in each category.

Add or remove columns in each of these panes by choosing View > Columns from the menu bar. The View menu also allows you to choose which processes are shown in each pane:

All Processes
All Processes Hierarchically: Processes that belong to other processes, so you can see the parent/child relationship between them.
My Processes: Processes owned by your macOS user account.
System Processes: Processes owned by macOS.
Other User Processes: Processes that aren’t owned by the root user or current user.
Active Processes: Running processes that aren’t sleeping.
Inactive Processes: Running processes that are sleeping.
Windowed Processes: Processes that can create a window. These are usually apps.
Selected Processes: Processes that you selected in the Activity Monitor window.
Applications in the last 8 hours: Apps that were running processes in the last 8 hours.

CPU

The CPU pane shows how processes are affecting CPU (processor) activity:

Click the top of the “% CPU” column to sort by the percentage of CPU capability used by each process. This information and the information in the Energy pane can help identify processes that are affecting Mac performance, battery runtime, temperature, and fan activity.

More information is available at the bottom of the CPU pane:

System: The percentage of CPU capability currently used by system processes, which are processes that belong to macOS.
User: The percentage of CPU capability currently used by apps that you opened, or by the processes those apps opened.
Idle: The percentage of CPU capability not being used.
CPU Load: The percentage of CPU capability currently used by all System and User processes. The graph moves from right to left and updates at the intervals set in View > Update Frequency. The color blue shows the percentage of total CPU capability currently used by user processes. The color red shows the percentage of total CPU capability currently used by system processes.
Threads: The total number of threads used by all processes combined.
Processes: The total number of processes currently running.

You can also see CPU or GPU usage in a separate window or in the Dock:

To open a window showing current processor activity, choose Window > CPU Usage. To show a graph of this information in your Dock, choose View > Dock Icon > Show CPU Usage.
To open a window showing recent processor activity, choose Window > CPU History. To show a graph of this information in your Dock, choose View > Dock Icon > Show CPU History.
To open a window showing recent graphics processor (GPU) activity, choose Window > GPU History. Energy usage related to such activity is incorporated into the energy-impact measurements in the Energy tab of Activity Monitor.

Memory

The Memory pane shows information about how memory is being used:

More information is available at the bottom of the Memory pane:

Memory Pressure: The Memory Pressure graph helps illustrate the availability of memory resources. The graph moves from right to left and updates at the intervals set in View > Update Frequency. The current state of memory resources is indicated by the color at the right side of the graph:
- Green: Memory resources are available.
- Yellow: Memory resources are still available but are being tasked by memory-management processes, such as compression.
- Red: Memory resources are depleted, and macOS is using your startup drive for memory. To make more RAM available, you can quit one or more apps or install more RAM. This is the most important indicator that your Mac may need more RAM.
Physical Memory: The amount of RAM installed in your Mac.
Memory Used: The total amount of memory currently used by all apps and macOS processes.
- App Memory: The total amount of memory currently used by apps and their processes.
- Wired Memory: Memory that can’t be compressed or paged out to your startup drive, so it must stay in RAM. The wired memory used by a process can’t be borrowed by other processes. The amount of wired memory used by an app is determined by the app's programmer.
- Compressed: The amount of memory in RAM that is compressed to make more RAM memory available to other processes. Look in the Compressed Mem column to see the amount of memory compressed for each process.
Swap Used: The space used on your startup drive by macOS memory management. It's normal to see some activity here. As long as memory pressure is not in the red state, macOS has memory resources available.
Cached Files: Memory that was recently used by apps and is now available for use by other apps. For example, if you've been using Mail and then quit Mail, the RAM that Mail was using becomes part of the memory used by cached files, which then becomes available to other apps. If you open Mail again before its cached-files memory is used (overwritten) by another app, Mail opens more quickly because that memory is quickly converted back to app memory without having to load its contents from your startup drive.

For more information about memory management, refer to the Apple Developer website.

Energy

The Energy pane shows overall energy use and the energy used by each app:

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Energy Impact: A relative measure of the current energy consumption of the app. Lower numbers are better. A triangle to the left of an app's name means that the app consists of multiple processes. Click the triangle to see details about each process.
Avg Energy Impact: The average energy impact for the past 8 hours or since the Mac started up, whichever is shorter. Average energy impact is also shown for apps that were running during that time, but have since been quit. The names of those apps are dimmed.
App Nap: Apps that support App Nap consume very little energy when they are open but not being used. For example, an app might nap when it's hidden behind other windows, or when it's open in a space that you aren't currently viewing.
Preventing Sleep: Indicates whether the app is preventing your Mac from going to sleep.

More information is available at the bottom of the Energy pane:

Energy Impact: A relative measure of the total energy used by all apps. The graph moves from right to left and updates at the intervals set in View > Update Frequency.
Graphics Card: The type of graphics card currently used. Higher–performance cards use more energy. Macs that support automatic graphics switching save power by using integrated graphics. They switch to a higher-performance graphics chip only when an app needs it. 'Integrated' means the Mac is currently using integrated graphics. 'High Perf.' means the Mac is currently using high-performance graphics. To identify apps that are using high-performance graphics, look for apps that show 'Yes' in the Requires High Perf GPU column.
Remaining Charge: The percentage of charge remaining on the battery of a portable Mac.
Time Until Full: The amount of time your portable Mac must be plugged into an AC power outlet to become fully charged.
Time on AC: The time elapsed since your portable Mac was plugged into an AC power outlet.
Time Remaining: The estimated amount of battery time remaining on your portable Mac.
Time on Battery: The time elapsed since your portable Mac was unplugged from AC power.
Battery (Last 12 hours): The battery charge level of your portable Mac over the last 12 hours. The color green shows times when the Mac was getting power from a power adapter.

As energy use increases, the length of time that a Mac can operate on battery power decreases. If the battery life of your portable Mac is shorter than usual, you can use the Avg Energy Impact column to find apps that have been using the most energy recently. Quit those apps if you don't need them, or contact the developer of the app if you notice that the app's energy use remains high even when the app doesn't appear to be doing anything.

Disk

The Disk pane shows the amount of data that each process has read from your disk and written to your disk. It also shows 'reads in' and 'writes out' (IO), which is the number of times that your Mac accesses the disk to read and write data.

The information at the bottom of the Disk pane shows total disk activity across all processes. The graph moves from right to left and updates at the intervals set in View > Update Frequency. The graph also includes a pop-up menu to switch between showing IO or data as a unit of measurement. The color blue shows either the number of reads per second or the amount of data read per second. The color red shows either the number of writes out per second or the amount of data written per second.

To show a graph of disk activity in your Dock, choose View > Dock Icon > Show Disk Activity.

Network

The Network pane shows how much data your Mac is sending or receiving over your network. Use this information to identify which processes are sending or receiving the most data.

The information at the bottom of the Network pane shows total network activity across all apps. The graph moves from right to left and updates at the intervals set in View > Update Frequency. The graph also includes a pop-up menu to switch between showing packets or data as a unit of measurement. The color blue shows either the number of packets received per second or the amount of data received per second. The color red shows either the number of packets sent per second or the amount of data sent per second.

To show a graph of network usage in your Dock, choose View > Dock Icon > Show Network Usage.

Cache

How To Tell If You've Been Hacked Mac

In macOS High Sierra 10.13.4 or later, Activity Monitor shows the Cache pane when Content Caching is enabled in the Sharing pane of System Preferences. The Cache pane shows how much cached content that local networked devices have uploaded, downloaded, or dropped over time.

Use the Maximum Cache Pressure information to learn whether to adjust Content Caching settings to provide more disk space to the cache. Lower cache pressure is better. Learn more about cache activity.

The graph at the bottom shows total caching activity over time. Choose from the pop-up menu above the graph to change the interval: last hour, 24 hours, 7 days, or 30 days.

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Learn more

Learn about kernel task and why Activity Monitor might show that it's using a large percentage of your CPU.
For more information about Activity Monitor, open Activity Monitor and choose Help > Activity Monitor. You can also see a short description of many items in the Activity Monitor window by hovering the mouse pointer over the item.