UNITEDTable STATES SECURITIESof AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Contents

UNITED STATES ~~FORM~~SECURITIES ~~8-K~~AND EXCHANGE COMMISSION

~~CURRENT~~WASHINGTON, ~~REPORT~~DC 20549

~~Pursuant~~FORM ~~to Section 13 or 15(d) of the Securities Exchange Act of 1934~~8-K

~~Date~~CURRENT ofREPORT Pursuant ~~Report~~to Section 13 or 15(~~Date~~d) of ~~Earliest~~the Securities ~~Event~~Exchange ~~Reported):~~Act ~~December~~of ~~30, 2005~~1934

~~RSA~~Date ~~Security~~of ~~Inc. __________________________________________~~ Report (~~Exact~~Date ~~name~~ of ~~registrant~~earliest asevent ~~specified~~reported): inJanuary 9, ~~its charter)~~ 2006

Delaware	000-25120	04-2916506
_____________________ (State or other jurisdiction	_____________ (Commission	______________ (I.R.S. Employer
of incorporation)	File Number)	Identification No.)
174 Middlesex Turnpike, Bedford, Massachusetts		01730
_________________________________ (Address of principal executive offices)		___________ (Zip Code)

RSA Security Inc.

~~Registrant’s~~(Exact ~~telephone~~name ~~number,~~of ~~including~~registrant ~~area~~as ~~code:~~specified ~~(781)~~in ~~515-5000~~charter)

~~Not~~Delaware ~~Applicable ______________________________________________ Former~~000-25120 ~~name or former address, if changed since last report~~ 04-2916506

~~Check~~(State ~~the~~or ~~appropriate~~other ~~box below if the Form 8~~juris-K ~~filing~~diction ~~is intended to simultaneously satisfy the filing obligation~~ of ~~the~~incorporation) ~~registrant~~(Commission ~~under~~File ~~any of~~Number) ~~the~~(IRS ~~following~~Employer ~~provisions:~~ Identification No.)

~~[ ] Written~~174 ~~communications~~Middlesex ~~pursuant~~Turnpike, toBedford, ~~Rule~~Massachusetts 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) 01730

~~Top~~(Address of ~~the~~principal ~~Form~~ executive offices) (Zip Code)

~~Item~~Registrant’s ~~2.01~~telephone ~~Completion~~number, ofincluding ~~Acquisition~~area orcode: ~~Disposition of Assets.~~(781) 515-5000

N/A On December 30, 2005, pursuant to an Agreement and Plan of Merger dated December 2, 2005 among RSA Security Inc., Cyota, Inc., Powder Acquisition Corporation, a wholly owned subsidiary of RSA Security, and Andrew Zalasin, in his capacity as the Cyota stockholders’ representative (the "Merger Agreement"), RSA Security Inc. acquired all of the outstanding capital stock of Cyota, Inc., and Powder Acquisition Corporation merged with and into Cyota, with Cyota continuing as the surviving corporation and a wholly owned subsidiary of RSA Security (the "Merger"). Pursuant to the Merger Agreement, each share of Cyota common stock outstanding before the consummation of the Merger was converted into the right to receive $0.5176 in cash. RSA Security paid $128.8 million in cash in the aggregate for all of the outstanding capital stock of Cyota and $5.5 million in cash to fund a three-year retention pool. In addition, RSA Security assumed all outstanding Cyota stock options, with a value of approximately $10.7 million. The Cyota stock options were exercisable for approximately 954,088 shares of RSA Security common stock as of December 30, 2005, 628,880 of which shares were fully vested at that date and 325,208 of which shares vest over the next four years. Pursuant to the Merger Agreement, RSA Security deposited $13.6 million of the cash consideration paid for Cyota’s outstanding capital stock into an escrow fund to secure certain indemnification obligations of the former stockholders of Cyota and to satisfy certain obligations of the former stockholders of Cyota to adjust the base purchase price. On or about December 30, 2006, the balance of the escrow fund in excess of any amounts held for unresolved claims will be distributed to the former stockholders of Cyota. RSA Security issued a press release announcing the Merger on December 30, 2005, which press release is attached to this Report as Exhibit 99.1 and incorporated herein by reference. This description of the Merger is not a complete statement of the parties’ rights or obligations under the Merger Agreement and is qualified in its entirety by reference to the full text of the Merger Agreement, which was filed as an exhibit to Amendment No. 1 to RSA Security’s Current Report on Form 8 K dated December 2, 2005, and is incorporated herein by reference.

~~Item~~(Former ~~9.01~~name ~~Financial~~or ~~Statements~~former ~~and~~address, ~~Exhibits.~~ if changed since last report)

~~(a) Financial~~Check ~~Statements of~~ the ~~Business~~appropriate ~~Acquired. The~~box ~~financial~~below ~~statements~~if ~~required~~the byForm ~~this~~8-K ~~item~~filing ~~are~~is ~~not~~intended ~~filed~~to ~~with~~simultaneously ~~this~~satisfy the ~~initial~~filing ~~Report. RSA~~obligation ~~Security~~of ~~will file~~ the ~~required~~registrant ~~financial~~under ~~statements~~any byof ~~amendment~~the tofollowing ~~this~~provisions ~~Report no later than March 17, 2006.~~(~~b) Pro~~see ~~Forma~~General Instruction ~~Financial Information~~A. ~~The pro forma financial information required by this item is not filed with this initial Report~~2. ~~RSA~~ ~~Security will file the required financial statements by amendment to this Report no later than March 17, 2006.(d~~below) ~~Exhibits See the Exhibit Index attached to this Report.~~:

~~Top~~o ofWritten communications pursuant to Rule 425 under the ~~Form~~ Securities Act (17 CFR 230.425) o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

~~SIGNATURES~~ TABLE OF CONTENTS

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


	Item 2.02. Results of Operations and Financial Condition
	Item 8.01. Other Events.
	Item 9.01. Financial Statements and Exhibits.
SIGNATURE
EXHIBIT INDEX
Ex-99.1 Press Release dated January 9, 2006

	RSA Security Inc.
December 30, 2005	By:	/s/Arthur W. Coviello, Jr.
		Name: Arthur W. Coviello, Jr.
		Title: President and Chief Executive Officer

~~Top~~Item 2.02. Results of ~~the~~Operations ~~Form~~and Financial Condition

The press release referred to under Item 8.01 below is also being furnished pursuant to Item 2.02 of Form 8-K. The full text of the press release is filed as Exhibit ~~Index~~99.1 to this Report and is incorporated herein by reference.

Exhibit No.		Description
2.1		Agreement and Plan of Merger, dated December 2, 2005, among RSA Security Inc., Cyota, Inc., Powder Acquisition Corporation and Andrew Zalasin in his capacity as the Cyota stockholders' representative (previously filed with the Securities and Exchange Commission on December 7, 2005 as an exhibit to Amendment No. 1 to RSA Security's Current Report on Form 8-K/A, and incorporated herein by reference).
99.1		Press release, dated December 30, 2005, issued by RSA Security Inc.

Item 8.01. Other Events.

On January 9, 2006, RSA Security Inc. issued a press release announcing its preliminary financial results for the fourth quarter ended December 31, 2005. The full text of the press release is filed as Exhibit 99.1 to this Report and is incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

See the Exhibit Index attached to this Report.

-2-

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


	RSA Security Inc. (Registrant)

Date: January 9, 2006	By:	/s/Arthur W. Coviello, Jr.
		Arthur W. Coviello, Jr.
		President and Chief Executive Officer

-3-

EXHIBIT INDEX


Exhibit No.		Description

99.1		Press release, dated January 9, 2006, announcing the preliminary financial results of RSA Security Inc. for the fourth quarter ended December 31, 2005.

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