Website malicious and we ....did not know

we just discovered that our website was mentioned malicious in your system.
http://www.hollandse-jeepsafari.com

We have a small website since 11 years in favor of our excursion company in Greece, our income depends on this website.
About 2 years ago our website was hacked, we fixed this damage and were fine again,but were probably 2 years blocked by NORTON.
An old client informed us about this, we did not know about this, how many customers did we lose?

We are not angry, but are very disappointed that our website was listed between "criminal" websites.
Is Norton allowed to do this, to give bad rate to good sites??

We submitted our website for re evaluation, hope we are goodlisted again.