Google showing error "this site may harm your computer" how to resolve

Google showing error "this site may harm your computer" This shows your site has some automatic scripts attached or any unwanted codes attached automatically by some bots.

You may think why this happens because you may set your permissions to open 777 try to change it to permission 666 or more secure,
To resolve this issue just search all your webpage
1.remove any unwanted scripts inserted like "iframe" or " scriptlet" and save your file.

2.Remove any hidden files in your site root folder
3.Remove robots.txt for some time to check that virus cause due to bots
Still problem persists then make a backup of all your file from your ftp and delete files from your root and reload all file to remote server again.

Finally apply to google about your site for re-review now your site is clear of harmfull content any doubt comment us.