Sandego.net – A Pentagon data breach of military personnel has exposed Social Security numbers and other sensitive information linked to current and former US service members, raising concerns about identity theft, phishing and foreign intelligence activity. The incident involved a major Pentagon personnel system operated by the Defense Manpower Data Center, known as DMDC.

Unauthorized users gained access to a vulnerable server beginning in October of last year. According to notification letters sent to affected people, the intrusion was not discovered and addressed until July, roughly nine months later.…