Appropriate punishment for Netsky author

Sven Jaschan, the 18-year-old, alleged author of the Sasser worm and several variants of the Netsky virus, was charged with sabotage by German police last week. Jaschan is believed to be responsible for 70 percent of the virus infections in 2004.

With the cost of virus infections steadily on the rise, what are appropriate punishments for convicted virus authors?