FOR IMMEDIATE RELEASE

SYMANTEC’S NEW NORTON INTERNET SECURITY 3.0 FOR MACINTOSH WILL SAFEGUARD
MAC USERS WITH ENHANCED VIRUS PROTECTION, NEW WEB CONTENT FILTERING

CUPERTINO, Calif. – May 13, 2003 – Symantec (Nasdaq: SYMC), the world
leader in Internet security, today announced Norton Internet Security 3.0
for Macintosh, the world’s most complete Internet security solution for the
Macintosh platform. The latest version of the market-leading software
suite, which is scheduled to be widely available in June, will now include
a new parental control feature that blocks Web sites that are inappropriate
for viewing by children. Norton Internet Security 3.0 for Macintosh will
also include the newest version of Norton AntiVirus 9.0 for Macintosh,
which now will have the ability to find and repair Windows/PC-compatible
viruses, offering users protection from the most common type of viruses and
helping them to avoid infecting friends and colleagues.

“With so many Mac users capitalizing on the recent explosion of Internet
technology, Symantec’s goal is to help those users minimize the risk
factors that could compromise personal safety and security online,” said
Steve Cullen, senior vice president of Symantec Consumer and Client Product
Delivery. “With Norton Internet Security 3.0 for Macintosh, Mac users will
be able to do everything – from downloading music files to sharing digital
photographs and shopping online – all with the peace of mind that comes
with the kind of reliable protection that only Symantec can deliver.”

“Our customers’ security and the health of their systems are extremely
important to Apple,” said Ron Okamoto, Apple=B9s vice president of
Worldwide Developer Relations. “We’re excited that Symantec’s new release
for Mac OS X will add to the security and safety of our users and their
systems.”

Norton Internet Security 3.0 for Macintosh will include:
– Norton Privacy Control, which offers new Parental Controls to prevent
undesired access to inappropriate Web content, and includes enhanced ad
blocking capabilities for hassle-free Web surfing
– Norton AntiVirus 9.0 for Macintosh, which now scans and disinfects both
PC and Mac viruses for added protection
– Norton Personal Firewall 3.0 for Macintosh, which maximizes security by
blocking both inbound and outbound Web traffic, and features a new set-up
assistant designed for easy installation and set-up
– iClean by Aladdin Systems, for quick removal of cookies, cache and
history files to further protect users=B9 privacy

Expanded Privacy Control
Norton Internet Security 3.0 for Macintosh includes Norton Privacy Control,
providing Internet users with important tools to protect their personal
information and to improve their Web surfing experiences. With the
addition of new Parental Controls, Mac users will be able to limit access
to illicit Web sites when their kids go online. Parents can either create
their own list of inappropriate sites to block, or they can download a URL
list produced and maintained by Symantec. This URL list will be updated
regularly to keep up with the latest questionable Web content, and will
automatically provided to Norton Internet Security users via Symantec’s
LiveUpdate technology.

Norton Privacy Control also offers users new advanced ad blocking
capabilities, which now will prevent more types of Web-based advertising
delivery, including JavaScript, allowing Mac users to access the Internet
with less hassle from the constant intrusion of unwanted banner ads and
pop-up windows. Additionally Norton Privacy Control has enhanced
confidential data blocking to help users avoid unknowingly or accidentally
sending out sensitive information online, including via Instant Messenger
programs.

Complete Protection from All Types of Viruses Adding the ability to scan
and disinfect PC viruses, Norton AntiVirus 9.0 for Macintosh will now
protect users from passing along the most common types of computer viruses,
as well as worms and Trojans. In addition to protecting users from
Mac-specific threats, the latest version of Norton AntiVirus for Mac will
also prevent Mac users from inadvertently being carriers of Windows-based
threats and proliferating malicious attacks. PC virus, worm and Trojan
protection also will enable multi-platform users to utilize one solution to
protect all their operating systems from the threat of attack.

New functionality in Norton AntiVirus 9.0 for Macintosh will also include
the ability to quarantine “unrepairable” virus-infected files, and allow
users to scan and repair compressed Mac files. Symantec has also enhanced
LiveUpdate, helping users to dramatically reduce the time it takes to
download new virus definitions.

Firewall Protection Made Easy
Norton Personal Firewall 3.0 for Macintosh will help keep Mac users=B9 data
safe and secure by providing a protective layer between their computers and
the growing number of hackers and intruders that lurk online. With the
latest version, Symantec adds a new Set-up Assistant to ensure easy
installation and configuration. It will also help users by detecting
services, such as file-sharing, when they are activated to prevent
potential conflicts. Additionally, it will provide a higher level of
security by blocking both inbound and outbound connections, and also allows
users to identify and trace potential hacking attempts in real time with
the new Visual Tracking feature.

Pricing and Availability
Norton Internet Security 3.0 for Macintosh runs on Mac OS X and Mac OS 9
and is available now for pre-order at www.SymantecStore.com for an
estimated retail price of $99.95. Current users of Symantec’s Macintosh
products, as well as users of select competitive products, can take
advantage of an upgrade mail-in-rebate of $30. Norton AntiVirus 9.0 for
Macintosh and Norton Personal Firewall 3.0 for Macintosh run on Mac OS X
and Mac OS 9 and can also be pre-ordered separately as stand alone
products, both for an estimated retail price of $69.95. In early June,
these products are expected to be available for purchase at various retail
locations, the Symantec online store at www.symantecstore.com as well as
from other online retailers.

About Symantec
Symantec, the world leader in Internet security technology, provides a
broad range of content and network security software and appliance
solutions to individuals, enterprises and service providers. The company is
a leading provider of client, gateway and server security solutions for
virus protection, firewall and virtual private network, vulnerability
management, intrusion detection, Internet content and e-mail filtering,
remote management technologies and security services to enterprises and
service providers around the world. Symantec’s Norton brand of consumer
security products is a leader in worldwide retail sales and industry
awards. Headquartered in Cupertino, Calif., Symantec has worldwide
operations in 36 countries. For more information, please visit
www.symantec.com.