Cover my tracks
Google Chrome
1. At the top right, click More.
2. Click Historical > Historical.
3. On the left, click Clear browsing data.
4. Use the drop-down menu to select the amount of data to delete. To clear everything, select All periods.
5. Check the boxes associated with the information you want to clear from Chrome, including "Browsing history."
6. Click Erase data.
Firefox
1. Open the Library icon, at the top right of the screen.
2. Click Historical, then on Clear recent history.
3. From the drop-down menu, select the interval to erase as well as the details of the data you want to delete. Click on Delete now.
Internet Explorer
1. Select the Tools button, point to Security, then select Delete browsing history.
2. Choose the types of data or files you want to delete from your PC, then select DELETE.
Safari
1. In the Safari app, choose Historical >Clear history, then click the context menu.
2. Choose the period of your history you want to clear.