From 10 October 2006 to 12 May 2007 Secretary of the National Security and Defense Council of Ukraine.
[1] Haiduk was born in the village Khlibodarivka, Volnovakha Raion, Donetsk Oblast.
In January 2000 — April 2001 — Haiduk is 1st Deputy Minister, Ministry of Fuel and Energy of Ukraine.
May 2004 — December 2006 — Chairman of the Supervisory Board of JSC "Dnieper Metallurgical Works named after Dzerzhinsky", President, Consortium "Industrial Group" (Kyiv).
Co-author of the book "Problems and prospects of development of leasing in Ukraine" (2000).