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  <TITLE>RSA Security Inc.'s S-8</TITLE>
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  <DIV align="center">
  <B>As filed with the Securities and Exchange Commission on
  September&nbsp;1, 2000</B>
  </DIV>
  
  <P align="right"><B>Registration
  No.&nbsp;333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  </B>
  
  <P align="left">
  <HR size="1" width="100%" align="left">
  
  <DIV align="left">
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  </DIV>
  
  <P align="center"><B><FONT size="5">SECURITIES AND EXCHANGE COMMISSION</FONT></B>
  
  <DIV align="center">
  <B>Washington, DC 20549</B>
  </DIV>
  
  <P align="center">
  <HR size="1" width="30%" align="center">
  
  <P align="center"><B><FONT size="4">FORM&nbsp;S-8</FONT></B>
  
  <P align="center"><B>REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933</B>
  
  <P align="center">
  <HR size="1" width="30%" align="center">
  
  <P align="center"><B><FONT size="6">RSA SECURITY INC.</FONT></B>
  
  <DIV align="center">
  <B><FONT size="2">(Exact Name of Registrant as Specified in Its
  Charter)</FONT></B>
  </DIV>
  
  <CENTER>
  <TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">
  
  <TR>
  	<TD width="56%">&nbsp;</TD>
  	<TD width="3%">&nbsp;</TD>
  	<TD width="41%">&nbsp;</TD>
  </TR>
  
  <TR><TD><TR><TD><TR><TD><TR><TD>
  
  <TR>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>Delaware</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>04-2916506</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>(State or Other Jurisdiction of</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>(I.R.S. Employer</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>Incorporation or Organization)</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>Identification Number)</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD colspan="3">&nbsp;</TD>
  </TR>
  
  <TR><TD><TR><TD><TR><TD><TR><TD>
  
  <TR>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>36 Crosby Drive, Bedford, Massachusetts</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>01730</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>(Address of Principal Executive Offices)</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	<B>(Zip Code)</B></FONT></TD>
  </TR>
  
  </TABLE>
  </CENTER>
  
  <P align="center"><B>AMENDED AND RESTATED 1998 NON-OFFICER EMPLOYEE</B>
  
  <DIV align="center">
  <B>STOCK INCENTIVE PLAN, AS AMENDED</B>
  </DIV>
  
  <DIV align="center">
  <B><FONT size="2">(Full Title of the Plan)</FONT></B>
  </DIV>
  
  <P align="center"><B>ARTHUR W. COVIELLO, JR.</B>
  
  <DIV align="center">
  <B>RSA Security Inc.</B>
  </DIV>
  
  <DIV align="center">
  <B>36 Crosby Drive</B>
  </DIV>
  
  <DIV align="center">
  <B>Bedford, Massachusetts 01730</B>
  </DIV>
  
  <DIV align="center">
  <B><FONT size="2">(Name and Address of Agent for Service)</FONT>
  </B>
  </DIV>
  
  <P align="center"><B>(781)&nbsp;301-5000</B>
  
  <DIV align="center">
  <B><FONT size="2">(Telephone Number, Including Area Code, of
  Agent for Service)</FONT></B>
  </DIV>
  
  <P align="center"><B>CALCULATION OF REGISTRATION FEE</B>
  
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  	<TD width="3%">&nbsp;</TD>
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  	<TD width="3%">&nbsp;</TD>
  	<TD width="14%">&nbsp;</TD>
  	<TD width="3%">&nbsp;</TD>
  	<TD width="14%">&nbsp;</TD>
  	<TD width="3%">&nbsp;</TD>
  	<TD width="17%">&nbsp;</TD>
  </TR>
  
  <TR>
  	<TD colspan="9"></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap colspan="9"><HR size="1"></TD>
  </TR>
  
  <TR>
  	<TD colspan="9"></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap colspan="9"><HR size="1"></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap><FONT size="2"><B>Title of Securities</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Amount</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Proposed Maximum</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Proposed Maximum</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Amount of</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap><FONT size="2"><B>to be</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>to be</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Offering</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Aggregate Offering</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Registration</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap><FONT size="2"><B>Registered</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Registered</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Price Per Share</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Price</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Fee</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD colspan="9"></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap colspan="9"><HR size="1"></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	Common Stock, $.01 par value</FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	4,432,072 shares</FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	$59.38(1)</FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	$263,176,435(1)</FONT></TD>
  	<TD></TD>
  	<TD align="center" valign="top"><FONT size="2">
  	$69,479</FONT></TD>
  </TR>
  
  <TR>
  	<TD colspan="9" align="left"><HR size="1"></TD>
  
  </TR>
  
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  	<TD colspan="9" align="left"><HR size="1"></TD>
  
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  	<TD width="4%"></TD>
  	<TD width="96%"></TD>
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  	<TD>(1)&nbsp;</TD>
  	<TD align="left">
  	Estimated solely for the purpose of calculating the registration
  	fee, and based on the average of the high and low prices of the
  	Common Stock on the Nasdaq National Market on August&nbsp;28,
  	2000 in accordance with Rules&nbsp;457(c) and 457(h) under the
  	Securities Act of 1933.</TD>
  </TR>
  
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  <!-- TOC -->
  <A name="toc"><DIV align="CENTER"><U><B>TABLE OF CONTENTS</B></U></DIV></A>
  
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  </TR>
  <TR><TD colspan="9"><A HREF="#000">PART I. INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#001">PART II. INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#002">SIGNATURES</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#003">POWER OF ATTORNEY</A></TD></TR>
  <TR><TD colspan="9"><A HREF="#004">EXHIBIT INDEX</A></TD></TR>
  <TR><TD colspan="9"><A HREF="b36629rsex4-1.txt">Ex 4.1 Specimen Certificate for Common Stock</A></TD></TR>
  <TR><TD colspan="9"><A HREF="b36629rsex5-1.txt">Ex 5.1 Opinion of Kathryn L. Leach</A></TD></TR>
  <TR><TD colspan="9"><A HREF="b36629rsex23-1.txt">Ex 23.1 Consent of Deloitte & Touche LLP</A></TD></TR>
  </TABLE>
  </CENTER>
  <!-- /TOC -->
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  <!-- link1 "PART I. INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS" -->
  <DIV align="left"><A NAME="000"></A></DIV>
  
  <P align="left"><B>PART I.&nbsp; INFORMATION REQUIRED IN THE SECTION&nbsp;10(a)
  PROSPECTUS</B>
  
  <P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  The information required by Part&nbsp;I is included in documents
  sent or given to participants in the Registrant&#146;s Amended
  and Restated 1998 Non-Officer Employee Stock Incentive Plan, as
  amended, pursuant to Rule&nbsp;428(b)(1) of the Securities Act of
   1933, as amended (the &#147;Securities Act&#148;).
  
  <!-- link1 "PART II. INFORMATION REQUIRED IN THE REGISTRATION STATEMENT" -->
  <DIV align="left"><A NAME="001"></A></DIV>
  
  <P align="left"><B>PART II.&nbsp; INFORMATION REQUIRED IN THE REGISTRATION
  STATEMENT</B>
  
  <P align="left">Statement of Incorporation by Reference
  
  <P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  Except as otherwise set forth below, this Registration Statement
  on Form&nbsp;S-8 incorporates by reference the contents of the
  Registration Statement on Form S-8, File No.&nbsp;333-71075 (the
  &#147;Initial Registration Statement&#148;), filed by the
  Registrant on January&nbsp;25, 1999, relating to the
  Registrant&#146;s 1998 Non-Officer Employee Stock Incentive Plan,
   as amended.
  
  <P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  Item&nbsp;5 of the Initial Registration Statement is amended and
  restated in its entirety as follows:
  
  <P align="left"><B>Item&nbsp;5.&nbsp;&nbsp;<I>Interests of Named Experts and
  Counsel</I></B>
  
  <P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  The validity of the Common Stock offered hereby will be passed
  upon for the Registrant by Kathryn L. Leach, Assistant General
  Counsel of the Registrant. Ms.&nbsp;Leach owns options to
  purchase an aggregate of 13,000 shares of Common Stock, which
  become exercisable in periodic installments through
  February&nbsp;2004.
  
  <P align="center">2
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  <H5 align="left"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <!-- link1 "SIGNATURES" -->
  <DIV align="left"><A NAME="002"></A></DIV>
  
  <P align="center"><B>SIGNATURES</B>
  
  <P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  Pursuant to the requirements of the Securities Act, the
  Registrant certifies that it has reasonable grounds to believe
  that it meets all of the requirements for filing on Form&nbsp;S-8
   and has duly caused this Registration Statement to be signed on
  its behalf by the undersigned, thereunto duly authorized, in the
  Town of Bedford, Massachusetts on August&nbsp;31, 2000.
  <P>
  
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  	<TD width="38%"></TD>
  	<TD width="62%"></TD>
  </TR>
  
  <TR valign="top">
  	<TD>&nbsp;</TD>
  	<TD align="left">
  	RSA SECURITY INC.</TD>
  </TR>
  
  </TABLE>
  <P>
  
  <TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
  
  <TR>
  	<TD width="38%"></TD>
  	<TD width="2%"></TD>
  	<TD width="60%"></TD>
  </TR>
  
  <TR valign="top">
  	<TD>&nbsp;</TD>
  	<TD>By:&nbsp;</TD>
  	<TD align="left">
  	/s/ ARTHUR W. COVIELLO, JR.</TD>
  </TR>
  
  </TABLE>
  
  <TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
  
  <TR>
  	<TD width="38%"></TD>
  	<TD width="62%"></TD>
  </TR>
  
  <TR valign="top">
  	<TD>&nbsp;</TD>
  	<TD align="left">
  	<HR size="1" align="left"></TD>
  </TR>
  
  <TR valign="top">
  	<TD>&nbsp;</TD>
  	<TD align="left">
  	Arthur W. Coviello, Jr.</TD>
  </TR>
  
  <TR valign="top">
  	<TD>&nbsp;</TD>
  	<TD align="left">
  	President and Chief Executive Officer</TD>
  </TR>
  
  </TABLE>
  
  <!-- link1 "POWER OF ATTORNEY" -->
  <DIV align="left"><A NAME="003"></A></DIV>
  
  <P align="center"><B>POWER OF ATTORNEY</B>
  
  <P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  We, the undersigned officers and directors of RSA Security Inc.
  hereby severally constitute Charles R. Stuckey, Jr., Arthur W.
  Coviello, Jr. and Hal J. Leibowitz, and each of them singly, our
  true and lawful attorneys with full power to them, and each of
  them singly, to sign for us and in our names in the capacities
  indicated below, the Registration Statement on Form&nbsp;S-8
  filed herewith and any and all subsequent amendments to said
  Registration Statement, and generally to do all such things in
  our names and behalf in our capacities as officers and directors
  to enable RSA Security Inc. to comply with all requirements of
  the Securities and Exchange Commission, hereby ratifying and
  confirming our signatures as they may be signed by said
  attorneys, or any of them, to said Registration Statement and any
   and all amendments thereto.
  
  <P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  Pursuant to the requirements of the Securities Act, this
  Registration Statement has been signed by the following persons
  in the capacities and on the dates indicated.
  
  <CENTER>
  <TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">
  
  <TR>
  	<TD width="47%">&nbsp;</TD>
  	<TD width="3%">&nbsp;</TD>
  	<TD width="34%">&nbsp;</TD>
  	<TD width="3%">&nbsp;</TD>
  	<TD width="13%">&nbsp;</TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap><FONT size="2"><B>Signature</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Title</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Date</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap><HR size="1"></TD>
  	<TD></TD>
  	<TD align="center" nowrap><HR size="1"></TD>
  	<TD></TD>
  	<TD align="center" nowrap><HR size="1"></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ ARTHUR W. COVIELLO, JR.<BR>
  	<HR size="1">Arthur W. Coviello, Jr.</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	President, Chief Executive Officer and Director (Principal
  	Executive Officer)</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August&nbsp;31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ JOHN F. KENNEDY<BR>
  	<HR size="1">John F. Kennedy</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Senior Vice President, Finance and Chief Financial Officer
  	(Principal Financial and Accounting Officer)</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August&nbsp;31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ CHARLES R. STUCKEY, JR.<BR>
  	<HR size="1">Charles R. Stuckey, Jr.</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Chairman of the Board of Directors</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August&nbsp;31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ ROBERT P. BADAVAS<BR>
  	<HR size="1">Robert P. Badavas</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Director</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August&nbsp;31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ D. JAMES BIDZOS<BR>
  	<HR size="1">D. James Bidzos</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Director</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August 31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ RICHARD L. EARNEST<BR>
  	<HR size="1">Richard L. Earnest</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Director</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August&nbsp;31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ TAHER ELGAMAL<BR>
  	<HR size="1">Taher Elgamal</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Director</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August&nbsp;31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	/s/ JOSEPH B. LASSITER, III<BR>
  	<HR size="1">Joseph B. Lassiter, III</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Director</FONT></TD>
  	<TD></TD>
  	<TD align="right" valign="top"><FONT size="2">
  	August&nbsp;31, 2000</FONT></TD>
  </TR>
  
  <TR>
  	<TD align="left" valign="top"><FONT size="2">
  	<BR>
  	<HR size="1">James K. Sims</FONT></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Director</FONT></TD>
  	<TD></TD>
  	<TD></TD>
  </TR>
  
  </TABLE>
  </CENTER>
  
  <P align="center">3
  <!-- PAGEBREAK -->
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  <H5 align="left"><A HREF="#toc">Table of Contents</A></H5><P>
  
  <!-- link1 "EXHIBIT INDEX" -->
  <DIV align="left"><A NAME="004"></A></DIV>
  
  <P align="center"><B>EXHIBIT INDEX</B>
  
  <CENTER>
  <TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">
  
  <TR>
  	<TD width="7%">&nbsp;</TD>
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  	<TD width="83%">&nbsp;</TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap colspan="3"><FONT size="2"><B>Exhibit</B></FONT></TD>
  	<TD></TD>
  	<TD></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap colspan="3"><FONT size="2"><B>Number</B></FONT></TD>
  	<TD></TD>
  	<TD align="center" nowrap><FONT size="2"><B>Description</B></FONT></TD>
  </TR>
  
  <TR>
  	<TD align="center" nowrap colspan="3"><HR size="1"></TD>
  	<TD></TD>
  	<TD align="center" nowrap><HR size="1"></TD>
  </TR>
  
  <TR>
  	<TD></TD>
  	<TD align="right" valign="top" nowrap><FONT size="2">4.1</FONT></TD>
  	<TD></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Specimen Certificate for shares of Common Stock, $.01 par value,
  	of the Registrant</FONT></TD>
  </TR>
  
  <TR>
  	<TD></TD>
  	<TD align="right" valign="top" nowrap><FONT size="2">5.1</FONT></TD>
  	<TD></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Opinion of Kathryn L. Leach, Esq.</FONT></TD>
  </TR>
  
  <TR>
  	<TD></TD>
  	<TD align="right" valign="top" nowrap><FONT size="2">23.1</FONT></TD>
  	<TD></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Consent of Deloitte &#38; Touche LLP</FONT></TD>
  </TR>
  
  <TR>
  	<TD></TD>
  	<TD align="right" valign="top" nowrap><FONT size="2">23.2</FONT></TD>
  	<TD></TD>
  	<TD></TD>
  	<TD align="left" valign="top"><FONT size="2">
  	Consent of Kathryn L. Leach, Esq. (included in Exhibit&nbsp;5.1)</FONT></TD>
  </TR>
  
  <TR>
  	<TD></TD>
  	<TD align="right" valign="top" nowrap><FONT size="2">24.1</FONT></TD>
  	<TD></TD>
  	<TD></TD>
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  	Power of Attorney (included in the signature pages of this
  	Registration Statement)</FONT></TD>
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text: RSA Security Inc.'s S-8
  Table of Contents
  As filed with the Securities and Exchange Commission on
  September 1, 2000
  Registration
  No. 333-
  SECURITIES AND EXCHANGE COMMISSION
  Washington, DC 20549
  FORM S-8
  REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
  RSA SECURITY INC.
  (Exact Name of Registrant as Specified in Its
  Charter)
  Delaware
  04-2916506
  (State or Other Jurisdiction of
  (I.R.S. Employer
  Incorporation or Organization)
  Identification Number)
  36 Crosby Drive, Bedford, Massachusetts
  01730
  (Address of Principal Executive Offices)
  (Zip Code)
  AMENDED AND RESTATED 1998 NON-OFFICER EMPLOYEE
  STOCK INCENTIVE PLAN, AS AMENDED
  (Full Title of the Plan)
  ARTHUR W. COVIELLO, JR.
  RSA Security Inc.
  36 Crosby Drive
  Bedford, Massachusetts 01730
  (Name and Address of Agent for Service)
  (781) 301-5000
  (Telephone Number, Including Area Code, of
  Agent for Service)
  CALCULATION OF REGISTRATION FEE
  Title of Securities
  Amount
  Proposed Maximum
  Proposed Maximum
  Amount of
  to be
  to be
  Offering
  Aggregate Offering
  Registration
  Registered
  Registered
  Price Per Share
  Price
  Fee
  Common Stock, $.01 par value
  4,432,072 shares
  $59.38(1)
  $263,176,435(1)
  $69,479
  (1)
  Estimated solely for the purpose of calculating the registration
  	fee, and based on the average of the high and low prices of the
  	Common Stock on the Nasdaq National Market on August 28,
  	2000 in accordance with Rules 457(c) and 457(h) under the
  	Securities Act of 1933.
  TABLE OF CONTENTS
  PART I. INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
  PART II. INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
  SIGNATURES
  POWER OF ATTORNEY
  EXHIBIT INDEX
  Ex 4.1 Specimen Certificate for Common Stock
  Ex 5.1 Opinion of Kathryn L. Leach
  Ex 23.1 Consent of Deloitte & Touche LLP
  PART I.  INFORMATION REQUIRED IN THE SECTION 10(a)
  PROSPECTUS
  The information required by Part I is included in documents
  sent or given to participants in the Registrant's Amended
  and Restated 1998 Non-Officer Employee Stock Incentive Plan, as
  amended, pursuant to Rule 428(b)(1) of the Securities Act of
   1933, as amended (the "Securities Act").
  PART II.  INFORMATION REQUIRED IN THE REGISTRATION
  STATEMENT
  Statement of Incorporation by Reference
  Except as otherwise set forth below, this Registration Statement
  on Form S-8 incorporates by reference the contents of the
  Registration Statement on Form S-8, File No. 333-71075 (the
  "Initial Registration Statement"), filed by the
  Registrant on January 25, 1999, relating to the
  Registrant's 1998 Non-Officer Employee Stock Incentive Plan,
   as amended.
  Item 5 of the Initial Registration Statement is amended and
  restated in its entirety as follows:
  Item 5.
  Interests of Named Experts and
  Counsel
  The validity of the Common Stock offered hereby will be passed
  upon for the Registrant by Kathryn L. Leach, Assistant General
  Counsel of the Registrant. Ms. Leach owns options to
  purchase an aggregate of 13,000 shares of Common Stock, which
  become exercisable in periodic installments through
  February 2004.
  2
  Table of Contents
  SIGNATURES
  Pursuant to the requirements of the Securities Act, the
  Registrant certifies that it has reasonable grounds to believe
  that it meets all of the requirements for filing on Form S-8
   and has duly caused this Registration Statement to be signed on
  its behalf by the undersigned, thereunto duly authorized, in the
  Town of Bedford, Massachusetts on August 31, 2000.
  RSA SECURITY INC.
  By:
  /s/ ARTHUR W. COVIELLO, JR.
  Arthur W. Coviello, Jr.
  President and Chief Executive Officer
  POWER OF ATTORNEY
  We, the undersigned officers and directors of RSA Security Inc.
  hereby severally constitute Charles R. Stuckey, Jr., Arthur W.
  Coviello, Jr. and Hal J. Leibowitz, and each of them singly, our
  true and lawful attorneys with full power to them, and each of
  them singly, to sign for us and in our names in the capacities
  indicated below, the Registration Statement on Form S-8
  filed herewith and any and all subsequent amendments to said
  Registration Statement, and generally to do all such things in
  our names and behalf in our capacities as officers and directors
  to enable RSA Security Inc. to comply with all requirements of
  the Securities and Exchange Commission, hereby ratifying and
  confirming our signatures as they may be signed by said
  attorneys, or any of them, to said Registration Statement and any
   and all amendments thereto.
  Pursuant to the requirements of the Securities Act, this
  Registration Statement has been signed by the following persons
  in the capacities and on the dates indicated.
  Signature
  Title
  Date
  /s/ ARTHUR W. COVIELLO, JR.
  Arthur W. Coviello, Jr.
  President, Chief Executive Officer and Director (Principal
  	Executive Officer)
  August 31, 2000
  /s/ JOHN F. KENNEDY
  John F. Kennedy
  Senior Vice President, Finance and Chief Financial Officer
  	(Principal Financial and Accounting Officer)
  August 31, 2000
  /s/ CHARLES R. STUCKEY, JR.
  Charles R. Stuckey, Jr.
  Chairman of the Board of Directors
  August 31, 2000
  /s/ ROBERT P. BADAVAS
  Robert P. Badavas
  Director
  August 31, 2000
  /s/ D. JAMES BIDZOS
  D. James Bidzos
  Director
  August 31, 2000
  /s/ RICHARD L. EARNEST
  Richard L. Earnest
  Director
  August 31, 2000
  /s/ TAHER ELGAMAL
  Taher Elgamal
  Director
  August 31, 2000
  /s/ JOSEPH B. LASSITER, III
  Joseph B. Lassiter, III
  Director
  August 31, 2000
  James K. Sims
  Director
  3
  Table of Contents
  EXHIBIT INDEX
  Exhibit
  Number
  Description
  4.1
  Specimen Certificate for shares of Common Stock, $.01 par value,
  	of the Registrant
  5.1
  Opinion of Kathryn L. Leach, Esq.
  23.1
  Consent of Deloitte & Touche LLP
  23.2
  Consent of Kathryn L. Leach, Esq. (included in Exhibit 5.1)
  24.1
  Power of Attorney (included in the signature pages of this
  	Registration Statement)
  4