Firefox/Google says my website is infected
Reported Attack Page!
This web page at www.mydomain has been reported as an attack page and has been blocked based on your security preferences.
Attack pages try to install programs that steal private information, use your computer to attack others, or damage your system.Some attack pages intentionally distribute harmful software, but many are compromised without the knowledge or permission of their owners.
What happened when Google visited this site?
Of the 81 pages we tested on the site over the past 90 days, 64 page(s) resulted in malicious software being downloaded and installed without user consent. The last time Google visited this site was on 2013-06-04, and the last time suspicious content was found on this site was on 2013-06-04.
Malicious software includes 31 trojan(s).
Malicious software is hosted on 3 domain(s), including treforowen.com/, podilovy-fond.eu/, akbgold.com/.
2 domain(s) appear to be functioning as intermediaries for distributing malware to visitors of this site, including vippraiahotel.com.br/, podilovy-fond.eu/.
This site was hosted on 1 network(s) including AS33182 (DIMENOC).
Has this site acted as an intermediary resulting in further distribution of malware?
Over the past 90 days, www.mydomain did not appear to function as an intermediary for the infection of any sites.
Has this site hosted malware?
No, this site has not hosted malicious software over the past 90 days.
How did this happen?
In some cases, third parties can add malicious code to legitimate sites, which would cause us to show the warning message.
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If you are the owner of this web site, you can request a review of your site using Google Webmaster Tools. More information about the review process is available in Google's Webmaster Help Center.
I'm not sure how my website got infected, whether someone exploited a vulnerability in the installed apps, my computer is compromised or my host's server was compromised itself.
Has anyone else run into this? What are the steps I need to take now and are there any things I should know?