A survey has revealed that 53% of UK citizens are concerned about other countries launching damaging cyber attacks against the UK.
They said they had either already suffered a security breach, or they were aware it is only a matter of time before they are hacked.
Those polled were from across the country, although around 200 were in the London area, with ages ranging from 18 to over 55, and 41% of the sample being male.
Other findings revealed that 38% believed their personal data may have been compromised as a result of a cyber attack on an organisation they do business with.
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Dwayne Melancon, chief technology officer at Tripwire, said those working in information security have long known the dangers that nation-state cyber attacks present.
But he said the extent to which the general public in the UK is aware of these threats, and is concerned about them, underscores the increasing frequency and intensity of cyber attacks in the UK and around the world.
In April, a similar survey by Tripwire revealed that almost 10% of those polled believed that smart meters will be targeted by cyber criminals.
More than 10% believe smart meter consumer data will include personally identifiable information (PII), such as bank details, dates of birth and addresses.
Some 40% of respondents feel more vulnerable to cyber attacks now than they did a year ago
Almost 80% believe smart meter PII will require additional security and 73% believe consumers should own smart meter PII data.