Originally posted by Not a Number
If you are using Gmail you should get notifications each time a new device (computer, mobile etc.) is used to login to the account. You can also log into your Gmail account from a web browser and scroll all the way to the bottom of the index page. In the lower right you'll see "Last account activity" and some time and date information. Click on the "details" link and it will show the recent login activity. Details include type of access (browser, pop3, mobile etc.), IP addresses and time and date. It will also show if there are other sessions logged in and give you the option to log out any other sessions. From the popup window you can also change your alert settings.
Go into your Gmail Account and Import settings and check the section "Grant Access to your account".
no one is logging into my account, they are just using my email address. It's like they decide to make one up because they want to download something and not use theirs emails so they don't get stuck with all the emails that I am now getting. What is kind of scary is that they are able to set up facebook, instagram, tumbler ask.fm, etc, without getting verification first, which is what is happening.
My concern was also that people are using my email address so I can go log into the account they created and lock them out (all I do is put in my email and then click 'forgot password' and a new one is emailed to me) is that I can read all the information they use, which is either all made up, or just my email is made up and I am able to get someone's personal info pretty easily.
Either way, very scary for facebook, tumblr, instagram, ask.fm. The only company that that sent me a verification recently that said 'if you did not request this account, click here and report" was microsoft. So I was able to report it to them that someone else used my email.