Names and social security numbers were leaked following a breach of a computer used by an HP employee supporting a US Navy contract. A malware infection likely spread through the network due to employee carelessness, among other liabilities. Employees should always pay close attention to any typos in emails, suspicious email addresses and attachments. The most common factor is human error, and should never leave their work devices device unattended, give away their passwords or share company and personal information that would made it easy for a criminal to breach the network.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/us-navy-hack-leaks-over-130000-soldiers-ssns/