Cybercrimes cost energy and utilities companies about $12.8m yearly a report by a security group has indicated.
The report on the website of DNV GL said the loss was in ruin business and damaged equipment.
It said platform operators needed confidence that countermeasures could deal with more sophisticated cyberattacks.
It described cybersecurity as a growing issue in the oil and gas sector since critical network segments in production sites, which used to be kept isolated, were now connected to networks.
According to the statement, the trend is towards remote operations and maintenance with centralised process data and plant information.
