On October 20, a hacker who calls themselves Dark X said they logged in to a server and stole the personal data of 350 million Hot Topic customers. The following day, Dark X listed the data, including alleged emails, addresses, phone numbers, and partial credit card numbers, for sale on an underground forum. The day after that, Dark X said Hot Topic kicked them out.Dark X told me that the apparent breach, which is possibly the largest hack of a consumer retailer ever, was partly due to luck. The...