Hello,
Thank you for posting in Microsoft Community forum.
Based on the description, I understand your question is related to student discount.
I didn't find student discount specially for studying cybersecurity. But there are many other Microsoft student discount information, you can check below links:
College students get Microsoft 365 Personal for just $2.99 per month.
Microsoft Student Discount on Office, Word | Microsoft 365
Students, parents, and teachers are eligible year-round for an education discount up to **10%**off Surface devices and accessories
Microsoft Education Store: Student Discounts & Deals (Windows, Surface, Laptops & more)
Have a nice day.
Best Regards,
Molly