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Victim Claim

Instituut voor de Nederlandse

thegentlemen ๐Ÿ‡ณ๐Ÿ‡ฑ Netherlands Public Sector ivdnt.org
Claimed by thegentlemen
Listed on leak site 15 May 2026
Reported attack date 14 May 2026
Group claims tracked 373
Unverified claim. This entry reproduces a listing published by the thegentlemen group on its own extortion site. Attackers routinely exaggerate or fabricate victims. Nothing here confirms that Instituut voor de Nederlandse suffered a breach, or what data was actually taken.

About the organisation

ivdnt.org rocketreach.co/instituut-voor-de-nederlandse-taal-profile_b45f686efc6979e6 It advances the study and preservation of Dutch through cutting-edge research, digital tools, and open-access resources covering vocabulary, grammar, dialects, and terminology. The institute curates authoritative references like the Algemene Nederlandse Spraakkunst for scholars, educators, and language enthusiasts worldwide

What the listing means

Instituut voor de Nederlandse appeared on the thegentlemen leak site on 15 May 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated. This group has published 134 claims in the last 30 days and remains active.

Recommended actions

  • Treat any unsolicited message referencing Instituut voor de Nederlandse as suspicious โ€” leaked data gets weaponised for phishing within days.
  • If you hold an account on ivdnt.org, change that password now, update it anywhere you reused it, and enable two-factor authentication.
  • Other Public Sector organisations should review this group's known TTPs and validate detection coverage against them.
  • Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
  • A leak-site listing is a claim made by the attacker, not a confirmed breach โ€” check the organisation's own disclosures before acting on it.

Leak-site evidence

Listing URL https://www.ransomware.live/id/SW5zdGl0dXV0IHZvb3IgZGUgTmVkZXJsYW5kc2VAdGhlZ2VudGxlbWVu