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<i>now the hacker is posing as my friend and trying to carry on his business activities. &nbsp; How does one stop the hacker</i><br />
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You need to contact the police. There is nothing (nothing) you can do when someone uses your email address to pose as you. So you need to contact the authorities. <br />
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If you do not wish to do this, then even less palatable (to me) is to change email addresses.
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You're welcome, &nbsp;I'm glad we could help.
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i am posing on behalf of a friend whose gmail was hacked and now the hacker is posing as my friend and trying to carry on his business activities. &nbsp; How does one stop the hacker, and how does one take the remedy with google. &nbsp;Are there any steps to follow. &nbsp;Thank u. Regardss
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i am posing on behalf of a friend whose gmail was hacked and now the hacker is posing as my friend and trying to carry on his business activities.   How does one stop the hacker, and how does one take the remedy with google.  Are there any steps to follow.  Thank u. Regardss

Gmail email account hacked

Google is an American multinational technology company specializing in Internet-related services and products that include online advertising technologies, search, cloud computing, software, and hardware.

Google

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Email Protocols

Google’s Gmail is a free email service that allows users to access their email on the web or by using third-party programs that synchronize email content through POP or IMAP protocols.