Gmail gives us a great facility. When you logged in to your gmail account, in the bottom centre of the page, you can see the information of the gmail when and where it was used before. By seeing this, you can find whether any hacker have logged into your gmail before without your knowledge. The information in the centre bottom page of the gmail gives the ipaddress which logged in previously. To find the geographical location, go to www.ip2location.com/free.asp and enter the ipaddress which your gmail page shows. That website will give you the information of country, state, city. Some websites provide the latitude and longitude details too. If you got the latitude and longitude details of the ipaddress, then go to www.wikimapia.com and enter the latitude, longitude values and click search. It will pinpoint the place in the map. So you can find exactly where the hacked your account from.
