PRESS RELEASE

MOUNTAIN VIEW, Calif. – May 19, 2011 – Symantec Corp. (Nasdaq: SYMC) today announced it has signed a definitive agreement to acquire privately-held Clearwell Systems, Inc., a recognized leader in the eDiscovery market. The acquisition of Clearwell will bring together the industry’s leading eDiscovery, archiving and backup offerings to provide customers one of the most comprehensive information management solutions available. Under the terms of the agreement, Symantec will acquire Clearwell for a purchase price of approximately $390 million, net of Clearwell’s existing cash balance of approximately $20 million. The agreement is subject to customary closing conditions, including regulatory approval, and is expected to close in the September quarter.

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“As information continues to grow at unprecedented rates, the biggest challenge for customers is to protect, manage and backup this information as well as have the ability to categorize and discover it efficiently,” said Deepak Mohan, senior vice president, Information Management Group, Symantec. “The acquisition of Clearwell’s market leading electronic discovery solution will further increase Symantec’s ability to get the right information, to the right people, at the right time, while reducing overall legal review costs and limiting risk.”

Clearwell's eDiscovery solution complements and enhances Symantec’s Enterprise Vault eDiscovery capabilities to create a more complete end-to-end eDiscovery solution. The existing integration of Enterprise Vault with the Clearwell eDiscovery Platform positions Symantec to quickly help IT and legal users streamline and reduce the cost, time and risk of eDiscovery across the most relevant information sources including email, desktops, file servers, backups and the cloud.

This acquisition will expand Symantec’s addressable market opportunity and will position the company as a leader in the fast-growing eDiscovery software market, which, according to Gartner, is growing at a compounded annual growth rate of 14 percent and is estimated to reach $1.7 billion by 20141. In addition, this acquisition is expected to provide future cross-sell and product integration synergies across Symantec backup and security, by leveraging Symantec NetBackup, Data Loss Prevention and Data Insight.

“Archiving and eDiscovery are two critical elements of information governance,” said Aaref Hilaly, president and chief executive officer, Clearwell Systems. “By joining forces and combining the industry’s leading archiving solution with the industry’s leading eDiscovery solution, we will be uniquely positioned to deliver a seamless, integrated information governance workflow, benefitting both Symantec and Clearwell customers.”

Organizations are being required to adopt more formal information governance processes to help reduce the costs and risks associated with legal discovery. According to Gartner, through 2012, companies without an information governance strategy and technology for content archiving solutions, will spend a third more on eDiscovery than those with content archiving solutions.2 Together Symantec and Clearwell are positioned to offer customers the ability to both proactively and reactively manage and discover their information with increased speed, efficiency and scale, both on-premise and in the cloud, while at the same time helping customers reduce costs and risks.

Symantec expects this transaction to be one-and-a-half cents dilutive to non-GAAP earnings per share in fiscal year 2012. The transaction is expected to be accretive starting in fiscal year 2013. Upon close of the acquisition, Clearwell will join the Information Management Group led by Senior Vice President Deepak Mohan. For more information on how Clearwell will complement Symantec's information management portfolio please visit: http://www.symantec.com/Clearwell

Webcast and Conference Call Information

Symantec will host a conference call and webcast today to discuss the acquisition at 1:30 p.m. PT/ 4:30 p.m. ET. The live discussion can be accessed by dialing 888-278-8459 domestic and 913-312-1502 internationally, passcode 3687953. An audio webcast of the call will also be available at www.symantec.com/invest. Please go to the Web site at least 15 minutes early to register, download and install any necessary audio software. A replay of the call will be available via webcast at www.symantec.com/invest. A slide presentation providing an overview of the transaction and strategic rationale is available at http://investor.symantec.com/phoenix.zhtml?c=89422&p=irol-eventnpres.

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About Clearwell

Clearwell Systems is transforming the way enterprises, government agencies, and law firms perform electronic discovery (eDiscovery) in response to litigation, regulatory inquiries, and internal investigations. The Clearwell E–Discovery Platform streamlines end–to–end eDiscovery, providing a single product for identification, collection, preservation, processing, analysis, review and production. Consistently ranked as a leader in independent eDiscovery industry surveys and reports, Clearwell Systems is an active participant in the Electronic Discovery Reference Model (EDRM) Project, The Sedona Conference, and the Text REtrieval Conference (TREC). For more information, visit www.clearwellsystems.com.

About Storage from Symantec

Symantec helps organizations secure and manage their information-driven world with storage management, email archiving, backup & recovery solutions.

About Symantec

Symantec is a global leader in providing security, storage and systems management solutions to help consumers and organizations secure and manage their information-driven world. Our software and services protect against more risks at more points, more completely and efficiently, enabling confidence wherever information is used or stored. More information is available at www.symantec.com.