Pentagon data breach exposes records of over 3M people

You can change a password after a breach.You can cancel a credit card.

But when your Social Security number gets exposed, you could be dealing with the fallout for years.That is the concern after a major breach involving the Pentagon's Defense Manpower Data Center.

If you have served in the military, worked for the Department of War or have other ties to the military community, your information could be among the records involved.A War Department official told CyberGuy that 2.76 million living individuals and 294,000 deceased individuals were affected.Depending on the person, the exposed information can include Social Security numbers, names, dates of birth, contact information and military personnel details.

So, if a breach letter from the Pentagon shows up in your mailbox, don't toss it aside.Here's what happened, what may have been exposed and what you can do to protect yourself.DMV BREACH CONFIRMED AS HACKERS CLAIM 200,000 RECORDS STOLENJoin us for a free CyberGuy LIVE class.Kurt "CyberGuy" Knutsson shares practical ways to stay safer, smarter and more confident with technology.

Explore classes on stopping spam, phone security, financial protection and using AI to get better healthcare.Each class is free, easy to follow and comes with a free printable checklist.See the classes and register at CyberGuyLive.comThe Pentagon is home to the Department of Defense, whose Defense Manpower Data Center disclosed a breach affecting millions of military-connected individuals.

(Bill Clark/CQ-Roll Call, Inc via Getty Images)The breach involved the Defense Manpower Data Center, or DMDC.A War Department official told CyberGuy that a DMDC information system experienced unauthorized access to personally identifiable information by a small number of unauthorized users between October 2025 and July 2026.

The official said DMDC immediately remediated the vulnerability after discovering it.At this time, the department says it has no indication that the accessed information has...