Answering my own question here, but curiosity got the better of me so I trawled through my mail archives and found the site. It was http://quiz.ngsec.com/ http:

Answering my own question here, but curiosity got the better of me so I trawled through my mail archives and found the site. It was http://quiz.ngsec.com/ http://quiz.ngsec.com/ and it's unfortunately offline now. Shame.