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how to find gmail originating ip ?

Greetings,
I am an IT person myself. one of my clients who have a gmail email.
his gmail has been hacked or the password has been guessed.
and an email was sent to the bank pretending being him.

The bank forwarded the email. and we would like to know if it was sent from our office, or was it hacked by an external hacker.

we tried tracing the email, but as expected, Gmail did hide the originating IP.

I had been trying to contact Gmail for the last week for assistance in this regards.
i need the ip of the sender (from my email) or the IP of whoever logged into my account at that specific time.

i understand a court order might be needed, that is no issue, but we need to contact gmail to even send them the court order.

any ideas guys ?
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Dave Baldwin
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Here's the Google Product contact page and it actually has a phone number.  http://www.google.com/contact/
View the full message headers of the email. It MIGHT show the IP address the message was sent from.

If it were an on-premise email server, it would for sure show it. I am not 100% sure about gmail with it being a cloud only solution and whether or not the originating IP will only show gmail servers or not.

It's at least a direction to look though.
Also once you login to Gmail, click on Details under Account Activity at the bottom right. It lists the IPs which logged into the service under your account.
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ASKER

The phone number and the contact page is not much of help. I suited my form a week ago and no reply. And their phone number is 100% useless automation.

I did check the headers of course. The originating ip is the gmail server.

And the account activity only shows the last 10 logins. That is the first thing I looked at. But my client took a whole to contact me and it was too late.

Any other ideas guys ?
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btan

Should first change the password and change to the 2-step verification system  I.e password and sms code.
https://support.google.com/accounts/answer/180744?hl=en&topic=1056283&rd=1

check recent activity
https://security.google.com/settings/security/activity?pli=1

can also retry google reporting
https://support.google.com/mail/contact/gtag_headers?group=hijack_spam

It’s worth noting that you usually won’t be able to get the exact location of the actual person who sent the email. For example, if someone in Germany sends you an email using Gmail, the last IP address in the header section will probably be the public IP address assigned to that user from the ISP, which will give you the location of the user ranging from within a mile all the way to the city or region level.

for email header analyser
https://toolbox.googleapps.com/apps/messageheader/

for impersonation, you can see Google stand
If you believe someone has created a Gmail address in an attempt to impersonate your identity, you may wish to file a report with the Internet Crime Complaint Center (www.ic3.gov), a partnership between the Federal Bureau of Investigation and the National White Collar Crime Center.

In addition, we recommend contacting your state's Office of Consumer Protection.

Gmail is unable to participate in mediations involving third parties regarding impersonation. To read the Gmail Terms of Use, please visit: http://gmail.google.com/gmail/help/terms_of_use.html
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ASKER

Guys
Thanks for trying to help. But as mentioned earlier. I am not the attacked. I am the IT security consultant for the attacked person (my client) so I already went through these links you guys keep on sending to me from google website. And I know I have to change the password before another email leaves with a new fraud. Can we move the level of support to a higher level please ?
The originating ip (which what we need) is not in recent activity, and it is not in the header. Gmail hid that  ip from the header.
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btan

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ASKER

Btan,
Thanks got all of the above. I am aware of all what is said. And I am also aware that Gmail will not disclose information to me. But I need to know what is the legal way to do it. In order to get the originating IP.
we have a lawyer who can get the court order for that and proceed.
I once the ip is disclosed. We can check with the ISP to see who had that IP at that time. Our main concern is that it is an internal act and the fraud was sent from my clients office.
Disclosing the ip of the sender (from Gmail with a legal act) can identify whether it was one of our employees in our office or not. As we know what was our ip at that moment.
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ASKER

Btan now that is something close to what I was looking for. Will follow up on Monday and read out this article closer and check if out. Most probably that's it.
Will update Monday

Thanks
In fact, author queries are addressed saying no way to get origin ip, Google may not necessarily reveal though it can be attempted in request but still subjected to legislative restrictions.

For consideration as solution on below
ID: 40236733
ID: 40236042