A quick search under the keyword "hacker" should bring up a wide selection of sites, many set up by the hacker community. Two useful sites are:
www.attrition.org This site tracks successful hack attacks on a worldwide basis. This month the site claims two Irish sites were successfully hacked.
www.esecurityonline.com This site, which is an Ernst & Young company, provides latest news on hacking, useful links and a selection of security software.