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How To Check if Someone Else is Using Your Gmail Account

How To Check if Someone Else is Using Your Gmail Account
Check if Someone Else is Using Your Gmail Account!

‘I think someone has been reading my emails and using my Gmail account. How do I find out and what can I do?’ This was the question I was asked the other day and not for the first time. Using the biggest name around for web services is great, but it makes you a target. This tutorial will show you how to check if someone else is using your Gmail account and what to do if your account has been compromised.

Gmail is everywhere. I don’t know anyone who doesn’t have a Gmail account. Google provides a popular email service, but it’s also great for Google Docs, Google Drive, and other useful software.

Having a single sign-in for all these apps is very convenient but it also provides a single point of failure. If someone can log into your Gmail, they can log into everything.

Let’s find out how to see if someone else is using your Gmail account.

Is someone using your Gmail account?

There are often signs that your Gmail account has been hacked. Emails that you didn’t send, complaints from contacts that you sent them spam or malware, emails from organizations you never heard of confirming account creation, or something else entirely.

While indicative of something going on, they are far from definite. Fortunately, Google is way ahead of us and has provided a tool with which to check your account’s activity.

How to See Who’s Logged In

Open Gmail and log in.

Scroll to the bottom of your Inbox page and find the Details link in the bottom right.

A page will now appear with your recent security events, including logins.

In recent security events, you will see all your logins. The page will show what browser was used, the IP address, and the date and time. Check through this to see if you notice anything suspicious. This data is collected and stored by Google on every login meaning that even a seasoned hacker wouldn’t be able to fake it.

You can also check the Google Security page, scroll to Your Devices, and see what has logged in and where.

If you don’t see the Details link at the bottom of your Gmail inbox, use this link instead. Some Gmail users don’t seem to have the Details link while others do.

Note: You can sign out of all active sessions from the Details page. If it makes you feel more secure, or you see an unauthorized login, don’t hesitate to flip the switch and change your password immediately.

Check For Changes in Your Account

If you’re still not convinced that your account isn’t jeopardized, there are a few more things to look out for:

  • Has any of your security settings been updated? – Things like contact information, 2-Factor Authentication, recovery email.
  • Have other accounts been hacked? – If your online bank account or some other account has been accessed it’s possible the hacker gained access through your Gmail if that’s the account that’s used for logins.
  • Check your “deleted” folder – You may find emails that the hacker used to gain access to other accounts in the deleted items folder.

Unrecognized Devices

Lastly, visit your Account Security page and look for any Security Alerts. Google has its own way of telling you whether or not someone is logged into your account.

Navigate through your devices and remove any older ones that you no longer use or any that you don’t recognize. Next, check for any security events. Most of these are simply logins that you will recognize.

What to do if your Gmail has been hacked

If you find anything obviously wrong within the Security check and someone else is using your Gmail account, you need to act quickly. The longer you wait, the more spam or malware they could be sending and the more photos or files they may be downloaded from your Google Drive.

There are a couple of simple things you can do to lock your Gmail account down.

Change your Gmail password

The first step is obviously to change your login password for Gmail. This will stop any hackers from being able to log back into your Gmail account to continue their nefarious work.

  1. Log into the Google Security page here.
  2. Select “Signing in to Google” and select “Password.”
  3. Enter your current password.
  4. Select to change that password and enter a new one.
  5. Confirm the change.

Aside from your Gmail password, it may be a good idea to change the passwords of any related accounts. For example; if you use this Gmail to login to your bank account, update that password as well.

Enable two-factor authentication

Once you have control of your Gmail account; it’s time to increase security to prevent it from happening again. Gmail, like many cloud services, offers two-factor authentication (2FA) which can seriously enhance your security.

It requires you to enter a password and then receive an email or SMS code to verify. The email gets sent to a different address, or you could use your phone.

  1. Log into the Google Security page here.
  2. Select Signing into Google and select “2-Step Verification.”
  3. Select Get Started and follow the wizard.

You have the option to select an SMS or call, use a hardware security key, or simply enter your phone number. I would suggest the SMS option. You’re never without your phone and it means you can log into Gmail from anywhere, at any time as long as you have your phone with you.

Ensure that you have a recovery email for any login alerts. If someone tries to access your Gmail account again it should trigger a login email. It is a good idea to contact your local authorities if any of your banking or financial information has been compromised.

Run a Full Antivirus and Malware Scan of Your Devices

If someone does gain access to your Gmail account, you won’t necessarily know how they did it. They could have used brute force on the Gmail server or hacked your device. It’s too much of a risk to not check so next you should perform a full antivirus scan of all your devices.

Then run a malware scan as a secondary measure. Most antivirus isn’t as thorough at checking for malware as Malwarebytes so run your existing virus scanner and then run a Malwarebytes scan.

Let Everyone Know

Now that you have regained control and further secured your Gmail account, it is a good time to let everyone know your email was hacked. Tell them they can safely ignore and delete any suspicious-looking email that was sent from your account and that everything is fine now.

That’s how to check if someone else is using your Gmail account and what to do about it if they have been using it. Two-factor authentication should go a long way to stop it from happening again so you should now be able to rest easy.

If You Can’t Sign-In

If the hacker has taken over your account you might not be able to log in. Google does offer support so that you can take your account back. Visit the Google Account Recovery Page.

Once you’ve typed in your Gmail address (be sure it’s the right one for the account you’re trying to get back), you will be prompted to enter the last password that you remember. Follow the steps, including verifying necessary information to regain access to your Gmail account.

When setting up your Gmail, it’s important that you add a recovery email and phone number. It’s also a good idea to remember which month and year you set the account up. Google may ask when you originally set the account up as a security verification question.

Holes in Your Security You May Have Overlooked

One of the keys to account security is understanding what makes your account vulnerable. You may have 2FA, a password comprised of hieroglyphics, and the best anti-virus software on the market, but it won’t do you any good if you’re unaware of other security risks.

Here is a list of how unauthorized users can gain access to your Gmail account:

  • The hacker has access to a device that receives your 2FA codes – This can be an old phone that you sold or even a public computer that you neglected to sign out of. 2FA will do no good if another user has access to the codes so make sure your contact information within Gmail is accurate. Also, be sure to sign-out and factory reset and devices you’re no longer using.
  • Using your mobile phone number – If someone has your old phone number and it isn’t updated in Gmail, they could easily receive 2FA codes. It isn’t easy these days to actually clone your phone number, but it isn’t completely out of the question either. If someone is continuously hacking your account, update your phone number and see if that stops it.
  • Someone has access to your backup codes – Gmail has a nifty feature called “backup codes.” Generating 10 at a time, you can print them out or write them down. Visit the Security window in your Gmail account and request new codes. If someone has one of the ten codes they can gain access to your Gmail. Requesting new codes will void your old ones.

If you’re curious how this helps you protect your account, there’s one very common theme; you’re not updating your account. Whether it’s clearing your backup codes or updating your contact information regularly, these are things that hackers rely on.

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6 thoughts on “How To Check if Someone Else is Using Your Gmail Account”

Curtis M Blake says:
The gmail “Details” window was showing someone in the Seattle area accessing my account, as well as me accessing from my home location. Turns out accessing gmail on my phone was showing up as access from Seattle. I’m guessing it’s because I have Google Fi VPN on my Google Pixel phone.
Backus Palmer says:
For a private detective, Hackmart is one of the best team for listening to calls and reading text messages remotely. Saves me a lot of time and effort. I buy a few licenses from them for my clients, and never have a problem with their service.


Muhammad Asghar says:
Asha says:
someone close to me just changed my gmail password and nw I don’t know the password bt that account is really important to me hw will i recover it back
Kasey says:
My google was taken over from a stolen phone and I tried everything they changed my recovery option to only sending text to a phone number that is not mine. I have had that google account for as long as 20 yrs lot of stuff in google drive how do i get back?
Me Myself says:
I think Google security is a joke. It might seem secure. But someone deleted all my emails and Google Drive contents last Friday afternoon. Monday morning I saw this had happened. And I used the details button in GMail to see that someone used the Chrome Browser with an IP Address pointing to Seattle. I am not in that state. They spent 11 minutes trashing my Drive files. Luckily the undelete tool worked with GMail and the support guy recovered my Drive.

My complaint is that Google only shows “recent activity” and that is limited. Nowhere could I find login activity that was useful. My husband doesn’t even use an antivirus and stay logged in. But never gets hacked because he’s a computer genius and knows to be secure. He tells me that Google security is easier to break than is realized. ANd in no way should ANYONE use Google to secure Google. Always use third party tools to do full localized backups. I shouldve known better than to trust Google.

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Apr 20, 2021

963 Articles Published