All notices, demands, statements, designations, approvals or other communications (collectively, " Notices ") given or required to be given by either party to the other hereunder shall be in writing, shall be (A)  delivered by a nationally recognized overnight courier, or (B) delivered personally. Any such Notice shall be delivered (i) to Tenant at the appropriate address set forth in Section 10 of the Summary, or to such other place as Tenant may from time to time designate in a Notice to Landlord; or (ii) to Landlord at the addresses set forth in Section 11 of the Summary, or to such other firm or to such other place as Landlord may from time to time designate in a Notice to Tenant. Any Notice will be deemed given on the date of receipted delivery, of refusal to accept delivery, or when delivery is first attempted but cannot be made due to a change of address for which no Notice was given. Notwithstanding anything to the contrary contained herein, if any breach of security in the Building or the Premises shall occur, then Landlord shall as immediately as practical provide notice to Tenant via e-mail to workplace@okta.com or such other email address(es) as Tenant shall from time to time notify Landlord in writing. If Tenant is notified of the identity and address of Landlord's mortgagee or ground or underlying lessor, Tenant shall give to such mortgagee or ground or underlying lessor written notice of any default by Landlord under the terms of this Lease by registered or certified mail. The party delivering Notice shall use commercially reasonable efforts to provide a courtesy copy of each such Notice to the receiving party via electronic mail.