Tips & advice

Tips for shoppers worried that their credit or debit cards may have been compromised by the massive security breach at Target stores.

Details of 40 million customer debit and credit cards may have leaked in a data breach at American retailer Target - which began on November 27 and ended on December 15, affecting stores at the height of shopping season.

This holiday season, shoppers are turning to mobile as a new way to hunt bargains, with purchases via mobile platforms nearly doubling year-on-year - but nearly one third of shoppers polled admitted to serious security errors, such as storing card details in smartphones.

A Firefox add-on has turned 12,500 users of the browser into a botnet which scours every page visited by infected users for vulnerabilities. The ‘Advanced Power’ add-on ensnared 12,500 PCs - and found 1,800 vulnerable websites for its unknown creators.

The assault by cybercriminals against big businesses continued this year -78% were attacked by outsiders, according to a report by Price Waterhouse Cooper. But small businesses - those with less than 50 employees - are rapidly becoming a target.

An international plot which would have turned huge numbers of PCs into “bricks” by using deeply buried malware was foiled by the NSA, according to an interview given to CBS by NSA director Keith Alexander. The attack could have "taken down the U.S. economy", an NSA official claimed.

we provide more detail on the most exploited applications and advise a few steps users can (and should) take to further strengthen their defenses.

11 things you can be doing to better protect your computers and data from ransomware such as Cryptolocker that is currently targeting businesses big and small.