~~Table~~ UNITED ofSTATES SECURITIES ~~Contents~~AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549

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

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

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

~~CURRENT~~Date ~~REPORT Pursuant~~of toReport ~~Section 13 or 15~~(d)Date of ~~the Securities~~Earliest ~~Exchange~~Event ~~Act~~Reported): ofDecember ~~1934~~ 30, 2005

~~Date~~ RSA ofSecurity ~~Report~~ Inc. __________________________________________ (~~Date~~Exact name of ~~earliest~~registrant ~~event~~as ~~reported):~~specified ~~October 17,~~in ~~2005~~its charter)

RSA Security Inc.


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)

~~(Exact~~Registrant’s ~~name~~telephone ofnumber, ~~registrant~~including asarea ~~specified~~code: ~~in charter~~(781) 515-5000

Delaware	000-25120	04-2916506
(State or other juris-	(Commission	(IRS Employer
diction of incorporation)	File Number)	Identification No.)
174 Middlesex Turnpike, Bedford, Massachusetts		01730
(Address of principal executive offices)		(Zip Code)

Not Applicable
______________________________________________
Former name or former address, if changed since last report

~~Registrant’s~~ Check ~~telephone~~the ~~number,~~appropriate ~~including~~box ~~area~~below ~~code:~~if ~~(781) 515~~the Form 8-~~5000~~K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

~~N/A~~ [ ] Written communications pursuant to Rule 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))

~~(Former~~ Top ~~name~~of orthe ~~former address, if changed since last report)~~Form

~~Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy~~ ~~the~~ Item ~~filing~~2.01 ~~obligation~~Completion of ~~the~~Acquisition ~~registrant~~or ~~under~~Disposition ~~any~~ of ~~the following provisions (see General Instruction A~~Assets.~~2. below):~~

o On ~~Written~~December ~~communications~~30, 2005, pursuant to ~~Rule 425~~an ~~under~~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 ~~Securities~~Cyota ~~Act~~stockholders’ representative (17the ~~CFR~~"Merger ~~230~~Agreement"), RSA Security Inc.~~425~~ 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.

o Item ~~Soliciting~~9.01 ~~material~~Financial ~~pursuant~~Statements toand ~~Rule 14a-12 under the Exchange Act (17 CFR 240~~Exhibits.~~14a-12)~~

o (a) Financial ~~Pre-commencement~~Statements ~~communications~~of ~~pursuant~~the Business Acquired. The financial statements required by this item are not filed with this initial Report. RSA Security will file the required financial statements by amendment to ~~Rule 14d-2~~this Report no later than March 17, 2006.(b) Pro ~~under~~Forma Financial Information. The pro forma financial information required by this item is not filed with this initial Report. RSA Security will file the ~~Exchange~~required ~~Act~~financial ~~(17~~statements ~~CFR~~by ~~240~~amendment to this Report no later than March 17, 2006.~~14d-2~~(bd)) Exhibits See the Exhibit Index attached to this Report.

o Top ~~Pre-commencement~~of ~~communications pursuant to Rule 13e-4(c) under~~ the ~~Exchange Act (17 CFR 240.13e-4(c))~~Form

~~TABLE OF CONTENTS~~ SIGNATURES

	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 October 17, 2005

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.

December 30, 2005	By:	/s/Arthur W. Coviello, Jr.

		Name: Arthur W. Coviello, Jr.
		Title: President and Chief Executive Officer

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

~~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 ~~99.1 to this Report and~~Index ~~is incorporated herein by reference.~~

Item 8.01. Other Events.


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.

On October 17, 2005, RSA Security Inc. issued a press release announcing its preliminary financial results for the third quarter ended September 30, 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.

See the Exhibit Index attached to this Report.

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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: October 17, 2005	By:	/s/Jeffrey D. Glidden
		Jeffrey D. Glidden
		Senior Vice President, Finance and Operations, Chief Financial Officer and Treasurer

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EXHIBIT INDEX

Exhibit No.		Description
99.1		Press release, dated October 17, 2005, announcing the preliminary financial results of RSA Security Inc. for the third quarter ended September 30, 2005.

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