The top 12 security stories of 2016

Benny Higgins, Tesco Bank CEO, said in a statement on the company's website: "Tesco Bank can confirm that, over the weekend, some of its customers' current accounts have been subject to online criminal activity, in some cases resulting in money being withdrawn fraudulently."

Customers reported that as much as £2,000 has been siphoned from their accounts over the weekend, with those affected also complaining that they are unable to get through to Tesco on the phone.

As well as suspending its online operations, Tesco Bank said it moved to block some customers' cards. The company hoped to refund customers within 24 hours, it said in a statement to the BBC. 

"As a precautionary measure, we have taken the decision today to temporarily stop online transactions from current accounts. This will only affect current account customers," Higgins said.

"While online transactions will not be available, current account customers will still be able to use their cards for cash withdrawals, chip and pin payments, and all existing bill payments and direct debits will continue as normal. We are working hard to resume normal service on current accounts as soon as possible."

However, the Financial Conduct Authority said banks must refund unauthorised payments immediately, unless they have evidence that the customer was at fault or the payment was more than 13 months ago.

And that concludes Computing's look at security in 2016. Stay safe in 2017!