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(Reuters) — A coordinated global cyberattack spread through malicious email could cause economic damages anywhere between $85 billion and $193 billion, a hypothetical scenario developed as a stress test for risk management showed.
Insurance claims after such an attack would range from business interruption and cyber extortion to incident response costs, the report jointly produced by insurance market Lloyd's of London and Aon PLC said Tuesday.
Total claims paid by the insurance sector in this scenario are estimated to be between $10 billion and $27 billion, based on policy limits ranging from $500,000 to $200 million.
The stark difference between insured and economic loss estimates highlights the extent of underinsurance in case of such an attack, the stress test showed. An attack could affect several sectors globally, with the largest losses in retail, health care, manufacturing and banking fields.
Regional economies that are more service-dominated, especially the United States and Europe, would suffer more and are vulnerable to higher direct losses, the report said.
Cyberattacks have been in focus after a virus spread from Ukraine to wreak havoc around the globe in 2017, crippling thousands of computers, disrupting ports from Mumbai to Los Angeles and even halting production at a chocolate factory in Australia.
Governments are increasingly warning against the risks private businesses face from such attacks, both those carried out by foreign governments and financially motivated criminals.
For example, Britain's National Cyber Security Centre announced on Friday it was investigating a large-scale Domain Name System hijacking campaign that hit governments and commercial organizations across the world.
In another recent incident, French engineering consultancy Altran Technologies was the target of a cyberattack that hit its operations in some European countries.
On a larger scale, personal data and documents from hundreds of German politicians and public figures, including Chancellor Angela Merkel, were published online in what appears to be one of Germany's most far-reaching data breaches.
The report was also co-produced by MSIG, SCOR TransRe and Cyber Risk Management (CyRiM).
The WannaCry ransomware attack, which has reportedly infected hundreds of thousands of computers globally, is triggering claims on cyber policies worldwide, but it is not expected to lead to a major market loss, cyber insurance experts say.