United States Postal Service Breached

On November 10, 2014 the United States Postal Service disclosed a cyber intrusion discovered in September 2014 that compromised customer call-center information and sensitive employee records—impacting over 800,000 employees and exposing names, dates of birth, Social Security numbers, addresses, employment dates, and emergency contacts. The report highlights similarities to other intrusions linked to China and raises the possibility of nation-state espionage, but explicitly states indicators of compromise and firm evidence for attribution were not publicly available.