I was visiting a site, shown as green circle white check safe. While I was getting some information from that site, I received a notice from NIS 2009 that "An intrusion attempt by u6b.in was blocked. Application path \DEVICE\HARDDISKVOLUME1\PROGRAM FILES\INTERNET EXPLORER\IEXPLORER.EXE". It gave the risk name as HTTP Malicious Toolkit Variant Activity 8, Severity: High and gave the attacking computer, URL, My PC address, Source Address and traffic description. NIS 2009 said it blocked the activity, so I don't think I need to worry about any malware getting on my PC.
Should I contact the Web Site and let them know what happened? I consider that company respectable and I've been to their Web Site before without this blocked message or should I just not go there again?
Even safe sites aren't safe anymore, are they?