<ul data-eligibleForWebStory="true">American steel giant Nucor confirms data breach in May cyberattack.Nucor, North America's largest steel maker, disclosed unauthorized access to certain IT systems.The company activated its incident response plan and involved law enforcement and cybersecurity experts.Limited data was stolen from Nucor's systems during the cyberattack.Operations and IT systems have been restored, and the threat actor no longer has access.Nucor confirmed no material business or financial impact from the incident.The nature of the attack was not specified in the notifications.Experts suggest Nucor may have been a victim of a ransomware attack.No group has claimed responsibility for the cyberattack on Nucor.The incident is being monitored for any further developments.Nucor is reviewing and evaluating the impacted data for potential notifications.The company is committed to complying with regulatory requirements following the cyber incident.Nucor believes it has addressed the cybersecurity incident and restored normal operations.The cybersecurity incident did not have a significant impact on Nucor's business or finances.Nucor continues to assess its cybersecurity measures to prevent future incidents.