Hint gives domain "military-grade-secrets.dev".

Search transperency logs and find:
 * now.under.even-more-militarygrade.pw.military-grade-secrets.dev
 * secret-storage.military-grade-secrets.dev

They both redirect to "forget-me-not.even-more-militarygrade.pw"
Which isn't online (no A record).

Google and find a cached copy!

 OOO{DAMNATIO_MEMORIAE}