A. Khan ek Certified Ethical Hacker aur cybersecurity trainer hain jinhone beginners ke liye multiple practical books aur courses banaye hain. Unka teaching style simple, hands‑on aur language‑friendly (Hinglish/Hindi) hai taaki technical skills zyada se zyada logon tak pahunch sake. A. Khan ka focus safe, legal aur career‑oriented cybersecurity education par hai.