1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G (RULE 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(b) (AMENDMENT NO. 1)(1) VeriSign, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, par value $.001 per share - -------------------------------------------------------------------------------- (Title of Class of Securities) 92343E 10 2 - -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2000 - -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [ ] Rule 13d-1(c) [X] Rule 13d-1(d) (1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

2 - ----------------------- ------------------- CUSIP No. 92343E 10 2 13G Page 2 of 6 Pages - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) RSA Security Inc. (formerly known as Security Dynamics Technologies, Inc.; successor in interest to RSA Data Security, Inc.) 04-2916506 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] Not Applicable - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares ------------------------------------------------------ NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY less than 5% OWNED BY ------------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING PERSON 0 shares WITH ------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 0 shares - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON less than 5% - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not Applicable - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 less than 5% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * CO ================================================================================ *SEE INSTRUCTION BEFORE FILLING OUT!

3 - ----------------------- ------------------- CUSIP No. 92343E 10 2 13G Page 3 of 6 Pages - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) RSA Security Business Trust (successor in interest to SD Securities Corp., IRS No. 04-3138192, and SD Investments Corp., IRS No. 04-3327982) 04-3537145 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] Not Applicable - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Massachusetts - -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 0 shares ---------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY less than 5% OWNED BY ---------------------------------------------------- EACH 7 SOLE DISPOSITIVE POWER REPORTING PERSON 0 shares WITH ---------------------------------------------------- 8 SHARED DISPOSITIVE POWER 0 shares - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON less than 5% - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not Applicable - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 less than 5% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON * CO ================================================================================ *SEE INSTRUCTION BEFORE FILLING OUT!

4 - ----------------------- ------------------- CUSIP No. 92343E 10 2 13G Page 4 of 6 Pages - ----------------------- ------------------- ITEM 1(a) NAME OF ISSUER: VeriSign, Inc. ITEM 1(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICE: 1350 Charleston Road, Mountain View, CA 94043 ITEM 2(a) NAME OF PERSON FILING: RSA Security Inc. (formerly known as Security Dynamics Technologies, Inc., successor in interest to RSA Data Security, Inc.) RSA Security Business Trust (successor in interest to SD Securities Corp. and SD Investments Corp.) ITEM 2(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE: 36 Crosby Drive, Bedford, MA 01730 ITEM 2(c) CITIZENSHIP: RSA Security Inc.: Delaware corporation RSA Security Business Trust: Massachusetts business trust ITEM 2(d) TITLE OF CLASS OF SECURITIES: Common Stock, $.001 par value per share ITEM 2(e) CUSIP NUMBER: 92343E 10 2 ITEM 3 DESCRIPTION OF PERSON FILING: Not applicable.

5 - ----------------------- ------------------- CUSIP No. 92343E 10 2 13G Page 5 of 6 Pages - ----------------------- ------------------- ITEM 4 OWNERSHIP: (a) AMOUNT BENEFICIALLY OWNED: less than 5% (b) PERCENT OF CLASS: less than 5% (c) NUMBER OF SHARES AS TO WHICH PERSON HAS: (i) sole power to vote or to direct the vote: 0 shares (ii) shared power to vote or to direct the vote: less than 5% (iii) sole power to dispose or to direct the disposition of: 0 shares (iv) shared power to dispose or to direct the disposition of: 0 shares ITEM 5 OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS: If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [X]. ITEM 6 OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON: Not applicable.

6 - ----------------------- ------------------- CUSIP No. 92343E 10 2 13G Page 6 of 6 Pages - ----------------------- ------------------- ITEM 7 IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY: Not applicable. ITEM 8 IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP: Not applicable. ITEM 9 NOTICE OF DISSOLUTION OF GROUP: Not applicable. ITEM 10 CERTIFICATION: Not applicable.

7 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. RSA SECURITY INC. DATED: February 14, 2001 By: /s/ ARTHUR W. COVIELLO, JR. ---------------------------------- Arthur W. Coviello, Jr. President and Chief Executive Officer RSA SECURITY BUSINESS TRUST DATED: February 14, 2001 By: /s/ ARTHUR W. COVIELLO, JR. ---------------------------------- Arthur W. Coviello, Jr. President