SECOND AMENDMENT TO CREDIT AGREEMENT

Exhibit 10.7B

SECOND AMENDMENT TO CREDIT AGREEMENT

THIS SECOND AMENDMENT TO CREDIT AGREEMENT dated as of April 30, 2012 (this “Agreement”) is entered into among LifeLock, Inc., a Delaware corporation (the “Borrower”), the Guarantors, the Lenders party hereto and Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer. All capitalized terms used herein and not otherwise defined herein shall have the meanings given to such terms in the Credit Agreement (as defined below).

RECITALS

WHEREAS, the Borrower, the Guarantors, the Lenders and Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer have entered into that certain Credit Agreement dated as of February 7, 2012 (as amended or modified from time to time, the “Credit Agreement”);

WHEREAS, the Borrower has requested that the Lenders amend the Credit Agreement as set forth below;

NOW, THEREFORE, in consideration of the premises and the mutual covenants contained herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

1. Amendments. The Credit Agreement is hereby amended as follows:

(a) Clause (a)(ix) in the definition of “Consolidated Cash EBITDA” in Section 1.01 of the Credit Agreement is hereby amended to read as follows:

(ix) any non-cash increases in the fair value of warrant liability for such period; and

(b) Clause (b)(ii) in the definition of “Consolidated Cash EBITDA” in Section 1.01 of the Credit Agreement is hereby amended to read as follows:

(ii) any non-cash decreases in the fair value of warrant liability for such period; and

2. Conditions Precedent. This Agreement shall be effective upon receipt by the Administrative Agent of counterparts of this Agreement duly executed by the Borrower, the Guarantors, the Required Lenders and Bank of America, N.A., as Administrative Agent.

3. Miscellaneous.

(a) The Credit Agreement and the obligations of the Loan Parties thereunder and under the other Loan Documents, are hereby ratified and confirmed and shall remain in full force and effect according to their terms. This Agreement is a Loan Document.

(b) Each Guarantor (a) acknowledges and consents to all of the terms and conditions of this Agreement, (b) affirms all of its obligations under the Loan Documents and (c) agrees that this Agreement and all documents executed in connection herewith do not operate to reduce or discharge its obligations under the Credit Agreement or the Loan Documents.

(c) The Borrowers and the Guarantors hereby represent and warrant as follows:

(i) Each Loan Party has taken all necessary action to authorize the execution, delivery and performance of this Agreement.

(ii) This Agreement has been duly executed and delivered by the Loan Parties and constitutes each of the Loan Parties’ legal, valid and binding obligations, enforceable in accordance with its terms, except as such enforceability may be limited by Debtor Relief Laws and general principles of equity (regardless of whether such enforceability is considered in a proceeding in equity or at law).

(iii) No consent, approval, exemption, authorization or other action by, or notice to, or filing with, any Governmental Authority or any other Person is necessary or required in connection with the execution, delivery or performance by any Loan Party of this Agreement.

(d) The Loan Parties represent and warrant to the Lenders that after giving effect to this Agreement (i) the representations and warranties of the Loan Parties set forth in Article VI of the Credit Agreement and in each other Loan Document are true and correct in all material respects as of the date hereof with the same effect as if made on and as of the date hereof, except to the extent such representations and warranties expressly relate solely to an earlier date and (ii) no event has occurred and is continuing which constitutes a Default or an Event of Default.

(e) This Agreement may be executed in any number of counterparts, each of which when so executed and delivered shall be an original, but all of which shall constitute one and the same instrument. Delivery of an executed counterpart of this Agreement by telecopy or electronic mail shall be effective as an original and shall constitute a representation that an executed original shall be delivered.

(f) THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE GOVERNED BY AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

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2

Each of the parties hereto has caused a counterpart of this Agreement to be duly executed and delivered as of the date first above written.