According to the German publication Der Spiegel, journalists “used commercial people search engines along with hacked customer data published on the web.” Those compromised include Pete Hegseth, Tulsi Gabbard, and Mike Waltz.
https://www.mediaite.com/news/report-passwords-of-top-u-s-security-officials-found-online-hegseth-gabbard-waltz-among-those-affected/

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