9999999995-21-003827 EFFECT 1 20211007 20211008 20211007 CYREN Ltd. 0001084577 7372 000000000 L3 1231 EFFECT 33 333-259959 211313786 10 HA-MENOFIM STREET 5TH FLOOR HERZLIYA L3 4672561 011-972-9-863-6888 10 HA-MENOFIM STREET 5TH FLOOR HERZLIYA L3 4672561 COMMTOUCH SOFTWARE LTD 19990419 EFFECT 1 primary_doc.xml UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 NOTICE OF EFFECTIVENESS Effective Date: October 07, 2021 Form: S-3 CIK: 0001084577 Company Name: CYREN Ltd. File Number: 333-259959