v3.26.1
Cover
Jul. 24, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 24, 2026
Entity File Number 001-41010
Entity Registrant Name Quantum Cyber N.V.
Entity Central Index Key 0001874252
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code P7
Entity Address, Address Line One Suite 400
Entity Address, Address Line Two 200 Connecticut Ave
Entity Address, City or Town Norwalk
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06854
City Area Code 561
Local Phone Number 562-4111
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Ordinary Shares, nominal value €0.01 per share
Trading Symbol QUCY
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false