Exhibit 32.1
CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO
18 U.S.C. SECTION 1350
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, David Lazar, the Chief Executive Officer of Quantum Cyber N.V. (the “Company”), hereby certify, that, to my knowledge:
| 1. | The Quarterly Report on Form 10-Q for the period ended September 30, 2026 (the “Report”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
| 2. | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. |
Date: November 12, 2026
| /s/ David Lazar | |
| Name: David Lazar | |
| Title: Chief Executive Officer |