Beazley said there was no impact from the CrowdStrike IT outage on 19 July on its outlook with the Lloyd’s insurer even raising its guidance for underwriting profit this year.
Adrain Cox, chief executive, said the company had prepared for an IT incident of the Crowdstrike nature.
“As a result, I am pleased to confirm this event had no impact on our view of the outlook for the remainder of 2024.
“When faced with the world's largest ever IT outage, Beazley's approach to underwriting cyber risk was tested and proved to be highly resilient,” he said.
Total premiums written in the half year to end June 2024 rose by 7% to US$3.12 billion, while profits almost doubled to US$729 million.
Beazley said demand from brokers and businesses for speciality underwriting is strong though all classes saw premiums pick up.
In cyber, premiums written rose by 27% to US$577 million with no material shift in ransomware claims despite increased incidents.
Property premiums rose 28% to just over US$1 billion with specialist risks up 13% at US$903 million.
Investment income rose by 2.4% to US$251 million.
Cox said: “We see opportunities in the remainder of the year and are on track to deliver on our high single-digit growth guidance.
"We are also pleased to improve our undiscounted combined ratio guidance for the full year to around 80% [first half 81%]."
Shares jumped 10% to 702p.