Washington — The Pentagon is conducting an operations security review following a significant data exposure at Dialog, a highly secretive private events organization co-founded by tech investor Peter Thiel, that compromised personal information of senior U.S. national security officials and active-duty special operations personnel.

The incident, first reported by WIRED, occurred after a misconfigured website left sensitive registrant files publicly accessible, prompting concerns over potential operational security risks for individuals involved in intelligence and military activities.

According to reports, the exposed database contained records for 222 participants scheduled to attend Dialog’s upcoming retreat outside Dublin, Ireland, in August. Among those affected were current and former high-ranking U.S. and allied military and intelligence officials.

Notable cases include an active-duty U.S. intelligence officer embedded with a Tier 1 special operations unit and a senior National Security Council official who advises President Donald Trump and previously served with the CIA. Both individuals were listed as first-time participants for the event, reported Clash Report.

Army Secretary Dan Driscoll (sometimes referred to with slight name variations in early reporting, such as Diane Driscoll) appears in the leaked membership and registration records for Dialog.

The files reportedly included highly personal details such as dates of birth, home addresses, mobile phone numbers, headshot photographs, private authentication tokens, and emergency contact information listing spouses and family members.

Dialog reportedly classified the exposure internally as a cyberattack. However, technical evidence indicates the breach stemmed from a misconfiguration that allowed anyone to create an account using an email address and access the dossiers directly from the group’s application landing page.

Outside counsel for Dialog sent a letter demanding the return of allegedly stolen data, though the organization has not publicly commented on the matter. The White House also declined to comment, and officials requested that the NSC staffer not be named for national security reasons.

The exposure was brought to light following a tip from Swiss cybersecurity researcher maia arson crimew, who has faced prior federal hacking-related charges in the United States but has not been convicted.

The database also included responses to detailed registrant questionnaires. One NSC official reportedly commented in their submission on the evolving nature of espionage, suggesting future efforts would focus more on targeting behavior than traditional secrets. Another participant, a former director in the Pentagon’s technology office, referenced concerns about domestic terrorism risks to artificial intelligence data centers and mentioned personal ownership of one of Saddam Hussein’s gold-plated AK-47s.

More than 20 current and former U.S. military and intelligence officials were reportedly unmasked in the leak, along with a retired U.S. Army general and a former senior Israeli security official involved in Palestinian territories issues.

The Pentagon’s review underscores growing concerns about the security of private networks frequented by top national security figures, particularly as elite gatherings increasingly blend government officials with technology and private-sector leaders.