The InterLock ransomware group has claimed responsibility for a March cyberattack on National Defense Corporation, a subsidiary of National Presto Industries. The company has not revealed what type of cyberattack it was victim to, but evidence suggested that ransomware was the likely perpetrator as systems were taken offline. InterLock says that it stole around 3 million files from the company, but National Presto Industries has not made a public statement in response. 

Read more: https://www.securityweek.com/ransomware-group-takes-credit-for-national-presto-industries-attack/