, is labeled ransomware , which has hitAttack.Ransomseveral local governments in Ohio and was the subject of a warning from the state auditor last summer . One tip , Baum said , is not to open personal emails on a work computer and do n't open emails or attachments from unknown senders . Baum said in the past city employees have said something if they 've received questionable emails . `` If they see something that seems suspicious about their computer or an email that they got or something like that , but they ’ ve opened it and they notify somebody , we can shut that section down and isolate the problem as quick as possible and minimize the amount of damage that it does , '' he said .