If it's there and connected to the web, someone will try to hack it. Consoles are being used to surf the web these days and Trend Micro has released a web security service for the PS3. The service is provided by updating the PS3 system software to Version 2.00, available starting on November 8, and the service is free through April of 2008. No news yet about the cost of the service after that.
Maybe... just don't surf the web with your console! Is *your* console protected by a fire-wall? Something to think about.