Advice for victims of panto scam

Thousands of computers have been exposed to a virus, because of a scam email about booking pantomime tickets in Bournemouth. The email - apparently from BH Live Tickets - claims to have tickets for Peter Pan at the town's Pavilion attached. But, when you click on it, you download a file containing the virus instead. The company has confirmed it didn't send the email and it's advising people to delete them and not to open any attachments or click any of the links.