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Learn about Security History

Security History gives you a summary of the most important security events that your Google Nest Secure alarm system detected throughout the day, such as someone arming Google Nest Guard or the alarm sounding. If you have a Google Nest × Yale Lock installed, you’ll also see events when your Nest Secure alarm system is disarmed when someone unlocks the door.

There are two different views: a quick multi-day summary with the number of events that occurred and a detailed view showing everything your system spotted on a particular day. On most days, a quick glance at the summary will keep you informed about key activities. But if something happens, like a security alarm, the detailed view makes it easy to spot exactly when the event occurred as well as the activity leading up to it, such as a window that opened before the alarm sounded. Both views capture 10 days of history.

How to view Security History

  1. On the Nest app home screen, select Guard.

  2. Select History Nest protect history icon. .

    You’ll see a 10-day overview with the number of
    events and timelines for each day. To keep it simple,
    this view won’t show everything your system
    detected and responded to. You’ll only see important events.

  3. To see everything that happened on a particular day, tap the day.

    The view will expand to show a chronological list of
    each activity spotted by Guard, Detect, and your
    Nest × Yale Lock if you have one installed.





Security History screenshot


How to update the events in Security History

Each time you open Security History, it gets updated with the latest available information. To refresh the view, simply tap the back arrow  back arrow , then select History Nest protect history icon.  to open it again with the most recent info.

Who can see Security History 

The Owner of the Nest home, as well as anyone who has Full access, can see Security History. People who have Home Entry Only access will not be able to see it.

        Learn more about Family Accounts >

What the icons mean

Event icons appear in your Security History, making it easy for you to visually scan through a particular day.

history check mark icon

OK. No news is good news. This icon appears during periods of
inactivity to show that your security system is working, even if it
didn’t sense any security events.

history heads up

Heads-up. Guard detected activity that would have set off the
alarm, but someone disarmed the system before that happened. It
will also appear before the Security Alarm icon if the alarm was

        Learn about the differences between a Heads Up and a Security Alarm >

history alarm icon

Security Alarm. An alarm has been triggered. During an alarm,
Guard’s siren sounds, its light ring turns red, and it sends an alert to
your phone.

        What happens during an alarm >

history panic icon

Panic Alarm. You, a family member, or guest triggered Nest Secure’s
Panic Alarm. A panic alarm sounds for 10 minutes or until you
silence it by disarming your system.

        How to trigger Nest Secure’s panic alarm >

history set to off icon

Set to Off. You, a family member, or a guest set Nest Secure to Off,
which disarmed it.

        Learn more about Nest Secure’s different security levels >

history home and guard

Set to Home and Guarding. Nest Secure was armed and was
monitoring doors and windows.

        Learn more about Nest Secure’s different security levels >

history away icon

Set to Away and Guarding. Nest Secure was armed and was
monitoring doors, windows, and motion in the home.

        How to open a window or door without setting off an alarm >

nest lock warning image.

Unrecognized Google Nest Tag. Someone tried to use a Tag to disarm your
system outside of their scheduled access time.

history icon open

Quiet Open.Someone in your home temporarily disarmed a Nest
Detect to open a door or window while the rest of the system
stayed armed.

        How to open a window or door without setting off an alarm >

history door window open

Door/Window open (while set to Off). Someone opened a door or
window while the system was set to Off. Even though this type of
activity won’t trigger an alarm, Security History will let you know
when it happened.

        Learn more about Nest Secure’s different security levels >

Note: If your system is set to Home and Guarding or Away and Guarding, the Heads-up or alarm icon appears for a door or window opening instead.

history door window closed

Door/Window closed. A door or window closed.

history offline

Offline. Guard was offline. This can happen when your home Wi-Fi or
internet connection goes down.

Cellular backup can help keep your Guard online,
even if your home Wi-Fi goes down.

         Learn more about Cellular Backup >

Other icons you might see

If you have a Nest × Yale Lock, Security History can also let you know when your Nest Secure system is disarmed by someone unlocking the door. To see your Nest × Yale Lock’s event history icons, see the article below.

Learn about Nest × Yale Lock History in the Nest app >

The following events happen less frequently, but Security History makes a note of them to help keep you informed.

lock software icon.

Software update. Nest has updated the software on your Guard or Detect.

         Nest Security software update history >

history added detected plus sign icon

Added Detect to your account. Someone added a Detect to your account in the Nest app.

history removed detect Removed Detect from your account. Someone removed a Detect from your account in the Nest app.


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