A vulnerability in the transport control protocol in version 4.9 of the Linux kernel and above leaves it open to a denial of service by a remote attacker, according to an advisory from CERT.

Well-known British security researcher Kevin Beaumont says the breach of the British operations of American multinational ticket sales and distribution company Ticketmaster, that has led to the possible leak of tens of thousands of credit card details, was caused by the incorrect placement of a single line of code.

American multinational ticket sales and distribution company Ticketmaster has warned Australian customers that they, too, could be at risk of having their credit card details leaked after the discovery of malware at the company's British operations.