Computer

How to tell if someone has tried to (physically) use your computer

If you live with more people in the same house (or you tend to invite your friends, who are sometimes prone to try to play pranks on you), it is quite possible that more than one person uses your personal computer, or at least try. You want know if someone has tried to use your computer? Well, in this article we are going to teach you how to do it.

First of all, you should know that if you do not have a login password on your computer, you will not be able to easily know if someone has tried to use it (although you will be able to know when they have turned it on and off). We assume that if you live in a place where there are several “candidates” to use the PC, you will have a password-protected login.

Prepare your PC: prerequisites and steps

Windows allows you to create multiple user profiles to allow multiple people to use the same computer, but what if it’s your personal computer and only you should be able to use it? Knowing if someone has tried to enter your session is quite simple and below we will show you how, whether they have succeeded (that is, they know your password and you should change it) or if the attempts to log in have failed.

In order to know if someone has tried to log in to the PC with your user, you must first activate account auditing in Windows, although it is something that is generally activated by default. You should also know that this does not work on the Home version of Windows, it is only available on the Pro, Enterprise and Edu versions.

To enable auditing, right-click Start and select Run (or press WIN + R). In the window that appears, type “gpedit.msc” (without the quotes) and the Windows group policy editor will open. The next thing you should do is navigate, through the menu on the left, to Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Audit Policy.

audit policy

Here you must double click on “Audit login events” and check both boxes in the tab that appears. Do the same with “Audit account login events” if you log in to your PC with a Microsoft account and not a local account.

Login Audit

Once this is done, press OK and restart the PC: you will be ready to find out if someone has tried to use your computer without your permission.

Knowing if someone has tried to use your computer is that simple

When you have this already configured, checking if someone has tried to use your computer is quite easy. Simply press the Windows key and type “event viewer”, or press WIN + R and in the Run window type “eventvwr.msc” without the quotes. The Windows event viewer will open. Here you must display “Windows Logs” on the left side and then click on Security. Then, on the right side, click on Filter current record…

Record

A window will open to filter the information. Where it says you must write “4624,2625” (as it is, with the comma in between, without spaces and without quotes), and you will get a report of all valid and failed logins on your PC, with their dates and specific hours, with which you can already assume if someone has tried to enter your PC without your permission when you were not there.

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