Symantec to Acquire Clearwell Systems, Inc.

May 19, 2011

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Forward-Looking Statements

• This presentation contains forward-looking statements within the meaning of U.S. federal securities laws, including expectations regarding the closing of Symantec’s acquisition of Clearwell Systems, Inc. and the integration of its products and technologies into Symantec’s products and solutions, that involve known and unknown risks and uncertainties that may cause actual results to differ materially from those expressed or implied in this presentation. Such risks include, among others, satisfaction of closing conditions to the transaction, our ability to successfully integrate the acquired businesses and technologies, and customer demand for the technologies and integrated product offerings. Actual results may differ materially from those contained in the forward-looking statements contained in this presentation. Additional information concerning these and other risk factors is contained in the Risk Factors section of Symantec’s Form 10-K for the year ended April 2, 2010. Symantec assumes no obligation to update any forward-looking statement contained in this presentation.

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What Are We Announcing Today?

• Symantec to acquire Clearwell Systems, Inc.

– Leader in eDiscovery software

– Revenue of $56 million for LTM ending March 31, 2011

• Purchase price of approximately $390M, net of $20M in cash from Clearwell

– Funded with approximately $345 million in cash

– Issuing approximately $45 million of Symantec stock options

• Operations

– To be led by Deepak Mohan, SVP, Information Management Group

– Will be integrated into our archiving and backup group

– Products to be sold through Symantec’s global sales force and both Symantec and Clearwell partner networks

• Transaction is expected to be 1.5 cents dilutive to non-GAAP EPS during FY12 and accretive to FY13 results

• Expected to close during the September quarter pending regulatory Hart-Scott-Rodino approval and other customary closing conditions

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Why Clearwell? • Unprecedented rate of information growth creates a challenge for customers to backup,

manage, categorize and discover information

– Extends our information management leadership by delivering market-leading eDiscovery solutions

• Addition of eDiscovery expands addressable market opportunity

– eDiscovery is an attractive market, expected to grow at a CAGR of 14% to $1.7B in 2014

– eDiscovery is complementary and converging with the fast growing $2.7B archiving market

• Enhances Symantec’s ability to provide end-to-end information management

– Brings together the market leading products in eDiscovery and archiving

– Cross sell Clearwell products into Enterprise Vault installed base due to the longstanding integration of Enterprise Vault with Clearwell products

– Future cross sell synergies with backup

• Existing go-to-market synergies

– Many joint delivery and service partners, leading to natural go-to-market synergies

• Strong Financials

– High growth and profitable business

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eDiscovery Growth Drivers

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Civil, patent, & criminal law

IP theft, inappropriate use

Wrongful termination,harassment

Compensation, options

backdating

Regulatory requestsSEC, FDA, FERC

Electronically Stored Information (ESI)

LegalForensics/

SecurityHR Audit Compliance

Email Servers Storage Desktops File Servers SharePoint Cloud

• Information growth and stricter regulatory requirements are driving higher costs for the discovery process

– Customer spend is shifting from manual discovery services to automated electronic discovery

• eDiscovery provides rapid and accurate visibility to information required across the enterprise, reducing risk and costs

• Beyond legal discovery there are additional users of eDiscovery such as HR, internal audit and compliance

9141,210

1,5181,867

2,2672,721889

985

1,117

1,296

1,503

1,728

1,803

2,195

2,635

3,163

3,770

4,449

2009 2010 2011 2012 2013 2014

HSM and Archive Software eDiscovery Software

Addressable Market Opportunity

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• Worldwide sales of eDiscovery forecasted to grow at a CAGR of 14% in 2014

• Expands our total addressable market opportunity with an end-to-end

eDiscovery solutionTotal Market =$4.4B09-13 CAGR = 20%

Archiving =$2.7B09-14 CAGR = 24%

eDiscovery = $1.7B09-14 CAGR = 14%

($ Millions)

Source: Graphic created by Symantec based on Gartner data source. Gartner Inc., Forecast: Enterprise Software Markets, Worldwide, 2008 -2015 1Q11 Update, Colleen Graham et al; Market Trends: eDiscovery Is a Buyer’s Market, Worldwide, 2010 Tom Eid December 8 2010

Clearwell at a Glance

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• Recognized leader in eDiscovery market

– Clearwell is in the “Leaders quadrant” of Gartner Magic Quadrant for eDiscovery

• Comprehensive set of eDiscovery solutions

– Won the “Network Products Guide Reader Trust Award” for the best products and services in eDiscovery in 2010

• Strong customer base

– 400+ customers

– 75+ partners and resellers

• Headquartered in Mountain View, CA

– International presence with office in London, England

• Approximately 200 employees

Clearwell Named as a Leader in 2011 Gartner Magic Quadrant for eDiscovery Software

Source: Gartner, Inc., Magic Quadrant for E-Discovery Software, Debra Logan, John Bace, May 13, 2011

The Magic Quadrant is copyrighted 2011 by Gartner, Inc. and is reused with permission. The Magic Quadrant is a graphical representation of a marketplace at and for a specific time period. It depicts Gartner's analysis of how certain vendors measure against criteria for that marketplace, as defined by Gartner. Gartner does not endorse any vendor, product or service depicted in the Magic Quadrant, and does not advise technology users to select only those vendors placed in the "Leaders" quadrant. The Magic Quadrant is intended solely as a research tool, and is not meant to be a specific guide to action. Gartner disclaims all warranties, express or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.

This Magic Quadrant graphic was published by Gartner, Inc. as part of a larger research note and should be evaluated in the context of the entire report. The Gartner report is available upon request from Clearwell.

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Clearwell’s Comprehensive Product Portfolio

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ReportingReview &

ProductionIdentification& Collection

Legal HoldProcessing,

Search & Analysis

Enables corporations to automate and

manage their legal hold process and minimizes risks

Allows IT and Legal teams to easily

identify and defensibly collect

data from across the enterprise

Allows IT and Legal to rapidly and

accurately filter, process, search, and

analyze data in multiple formats

and languages

Provides legal professionals with a

wide range of features needed to

rapidly conduct e-discovery review

Provides case mgmt. capabilities

like analytics, lifecycle

reporting, user mgmt, audit trail

to customers

Lifecycle Reporting & Case Management

1 3 42

• Clearwell has four product modules that cover the entire eDiscovery lifecycle

• All capabilities are delivered as a software, in an appliance or as a hosted service

The Clearwell and Symantec Value Proposition

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End-to-End Archiving and eDiscovery with Enterprise Vault and Clearwell’s Products

Symantec’s Enterprise Vault

Clearwell’s eDiscovery Solutions

50 TB

500 GBArchive &

StoreDiscover & Preserve

Analyze & Review

5-10 GB

150 TB

Production

• It is 1600 times more expensive to review data than to store it

Clearwell Sales and Go-To-Market

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• Clearwell products are directly sold to enterprises and law firms

– Direct sales are segmented into enterprise, federal, international and channel teams

– Operating in multiple geographies: US, Canada and UK

• Clearwell has 75+ partners selling their technology

– As resellers to enterprises

– As a hosted service

– As part of consulting services or a reactive discovery response engagement

ClearwellSales Mix

International 20%

US 80%

• Existing joint customers and partners

– A growing list of common delivery and service partners

– Numerous customers benefitting from integration of Enterprise Vault with Clearwell products

– Leverage our global sales and go-to-market footprint to sell Clearwell’sproducts

Summary

• As unprecedented rate of information growth creates a challenge for customers, Symantec will extend it’s information management leadership by delivering market-leading eDiscovery solutions

• Expand Symantec’s addressable market by positioning the company as a leader in enterprise eDiscovery software growing at a CAGR of 14%

• Brings together the industry’s leading archiving and eDiscovery solutions which are already integrated

• Cross sell Clearwell products into Enterprise Vault installed base and realize future cross sell synergies with backup

• High growth and profitable business

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Thank youFor questions please contact:

Helyn Corcos

hcorcos@symantec.com

(650) 527-5523

Copyright © 2010 Symantec Corporation. All rights reserved. Symantec and the Symantec Logo are trademarks or registered trademarks of Symantec Corporation or its affiliates in the U.S. and other countries. All rights reserved. VeriSign and the Checkmark Circle Design are registered trademarks of VeriSign, Inc. Symantec will acquire the Checkmark Circle Design mark from VeriSign as a part of the acquisition. Symantec plans to use the Checkmark Circle Design mark in connection with the business after completion of the acquisition. Other names may be trademarks of their respective owners.

This document is provided for informational purposes only and is not intended as advertising. All warranties relating to the information in this document, either express or implied, are disclaimed to the maximum extent allowed by law. The information in this document is subject to change without notice.

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Appendix

eDiscovery Workflow

Source: EDRM (edrm.net)

Information Management Preparing “electronic house” for eDiscovery events

Identification

Locating potential sources of ESI; determining scope, breadth, depth

Preservation Ensuring ESI is protected from inappropriate alteration or destruction

Collection Gathering ESI for further use in the e-discovery process (e.g., processing, review)

Processing Reducing the volume of ESI and converting for more suitable review, analysis

Review Evaluating ESI for relevance and privilegeAnalysis Evaluating ESI for content & context, including key patterns, topics, people, etc.

Production

Delivering ESI to others in appropriate forms & using appropriate delivery mechanisms

Presentation

Displaying ESI before audiences, especially in native forms, to elicit further info or persuade

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• Electronic Discovery Reference Model (EDRM) is a standard framework for describing steps in the eDiscovery process and evaluating eDiscovery products and services

Information Mgmt

Identification

Preservation

Collection

Processing

Review

Analysis

Production

+

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eDiscovery Landscape

• Clearwell’s leading eDiscovery capabilities coupled with Symantec’s leading archiving and backup products will provide one of the most comprehensive solution