If you are unfortunate enough to have had your website hacked, you will understand what an upsetting time it can be. Not only do you have to deal with the fallout of what your website ended up containing (spam, malware or the selling of some strange blue pills!), you also have the time consuming task of trying to clean the mess up.
Google Webmaster Tools have now introduced a new tool named Security Issues. This tool gives you an overview of how your site has been hacked, examples of the infected pages and even the different types of issues:
When you think you have found how your website was hacked, cleaned up the mess and fixed the security hole, you can then request that Google review your site with an easy to use "Review" process: