Inside GWT (Google’s webmaster tool), it will also give you the details:
Dear site owner or webmaster of site.com,
We recently discovered that some of your pages can cause users to be infected with malicious software. We have begun showing a warning page to users who visit these pages by clicking a search result on Google.com.
Below is an example URL on your site which can cause users to be infected (space inserted to prevent accidental clicking in case your mail client auto-links URLs…
Once you’ve secured your site, you can request that the warning be removed by visiting
and requesting a review. If your site is no longer harmful to users, we will remove the warning.
Google Search Quality Team