A U.K. teen was sentenced to a two-month curfew after pleading guilty to sending about five million spam e-mails. The 18-year-old admitted that this act constituted a violation of Section 3 of the Computer Misuse Act. A U.K. insurance firm, the Domestic & General Group, was the lucky recipient of the messages. “This is the first successful prosecution in the UK for this type of offence,” said DCI Charlie McMurdie, head of the Metropolitan Police’s Computer Crime Unit…