Enter a URL
Google Malware Checker is a great tool which lets's you know about malware activity on any website. If you are suspicious about a website, and you think there's something wrong with it, you can just enter URL of the site here and let the tool crawl the web for any fraud activity. It only takes a few seconds for this tool to generate the results.
On entering the complete URL of the site, your website will be redirected to Google' Safe Browsing Diagnostic Page. The report is produced for the last three months since Google has visited the site, and if the crawler finds any suspicious activity on your website, it will notify you.