A cyber strike which hit dozens of British hospitals on Friday is part of a wider "international attack", Prime Minister Theresa May said.
Telecom giant Telefonica and several other Spanish companies were targeted in cyber attacks Friday, the government said.
Israeli authorities said on Wednesday that they had detected planned cyber attacks against 120 public and private targets in the Jewish state but did not specify the intended victims.
Germany's armed forces Saturday launch a cyber command, with a status equal to that of the army, navy and air force, meant to shield its IT and weapons systems from attack.
New research has identified a 'mean blind spot', which leaves organisations vulnerable to cyber attack – particularly in the months of April and October.
Whether a nation should retaliate against a cyber attack is a complicated decision, and a new framework guided by game theory could help policymakers determine the best strategy.
Queen Elizabeth II will inaugurate Britain's National Cyber Security Centre on Tuesday, spearheading the country's efforts to combat a growing wave of cyber attacks notably from Russia.
NATO chief Jens Stoltenberg on Thursday said the alliance is coming under an increasing number of state-sponsored cyber attacks as he called on the bloc to boost its online defence capabilities.
The Organization for Security and Co-operation in Europe, an international election and war monitor, said Wednesday it had become the latest global institution to suffer a "major" cyber attack.
A presidential commission on Friday made 16 urgent recommendations to improve the nation's cybersecurity, including creating a nutritional-type label to help consumers shop wisely and appointing a new international ambassador ...