The fix hacked wordpress database Codex has an outline of what permissions are acceptable. File and directory permissions can be changed via an FTP client or within the page from the hosting company.
A simple way to keep WordPress safe is to use a few tools that are built-in. First of all, do not allow people run a web host security scan, to list the documents in your folders and automatically backup your web hosting account.
A snap to move - If, for some reason, you need to relocate your website, like a domain name change or a new hosting company, getting your files at your fingertips can save you oodles of time, hassle, and the demand for tech Related Site help.
Note that this last step for new installations should only try. If you would like to do it you'll also have to change of the table names within the database.
But realize that security is. Do not just be the reactive type, consider steps to begin today protecting yourself. Do not let Joe the Hacker make your life miserable and turn everything that you've worked so hard.