Symantec Launches SEP12 Public Beta

Symantec Endpoint Protection 12 to combat the volume and complexity of cyber
attacks in traditional and virtual environments

Dubai, United Arab Emirates. – May 10, 2011 – Corp. (Nasdaq: SYMC) has announced Symantec
Endpoint Protection 12, now available for public beta and optimized for virtual environments, offering
organizations the protection needed to effectively block both known and new cyber threats. Symantec
now opens its previously invitation-only beta program to the public, and interested parties may sign up
here. Symantec Endpoint Protection Small Business Edition 12, also now available for public beta, will
offer small organizations with limited IT staff and resources a solution they can easily deploy to start
protecting their businesses in less than 20 minutes (on average in a less than 50 user environment). The
new versions are scheduled to be generally available later this year for purchase through Symantec’s
worldwide network of value-added authorized resellers, distributors and systems integrators or directly.

For mid- to large-sized organizations, Symantec offers Symantec Endpoint Protection 12 for on-premises
deployment. For smaller organizations, Symantec offers both on-premises and cloud-based solutions
with Symantec Endpoint Protection Small Business Edition and Symantec Endpoint Protection.cloud,
respectively, providing customers with flexibility of choice and freedom of deployment to best meet
their business needs.

Threat Landscape: The sheer volume of sophisticated attacks targeting organizations of all sizes poses
a daunting challenge for traditional signature-based security solutions that can’t keep up. According to
Symantec’s Internet Security Threat Report, in 2010, attackers unleashed more than 286 million distinct
malicious programs, an average of more than nine new threats every second of every day. These threats

impact multiple areas of the IT infrastructure with a 93 percent increase in Web-based attacks, 42
percent more mobile vulnerabilities, and 6,253 new vulnerabilities including 14 zero-day vulnerabilities
which played a key role in targeted attacks like Hydraq and Stuxnet. Security solutions that provide
central management and security intelligence are required to combat persistent, coordinated assaults
on organizations today.

Symantec Endpoint Protection 12: To provide unmatched protection against this new threat landscape,
Symantec Endpoint Protection 12 is designed to detect and block sophisticated new threats earlier,
more accurately, and with greater performance than any other security product. Symantec Endpoint
Protection leverages Insight, Symantec’s award-winning community and cloud-based reputation
technology, to block new and unknown threats missed by other security solutions. By blocking risky files
with a poor reputation from entering an organization, Symantec Endpoint Protection provides a vital
first line of defense in the battle against advanced persistent threats. Built for speed and effectiveness
in virtual environments, internally-conducted testing of the software in heavily consolidated virtual
environments shows a 90 percent reduction in disk usage, thus delivering up to a tenfold increase
in consolidation density. Symantec continues to work closely with VMware to take full advantage of
virtualization awareness and introspection capabilities based on VMware vShield™ technology, and
Symantec Endpoint Protection 12 is the first step along the optimization path for virtual and cloud
environments.