Internet Security Systems Selected by Hyatt Hotels as Preferred Network Security Provider; Hyatt Hotels & Resorts To Replace Ex

Internet Security Systems, Inc. (ISS) (NASDAQ: ISSX),
the worldwide leader in preemptive, enterprise security, today
announced that Hyatt Hotels & Resorts will replace its existing
security software with ISS' Proventia(R) Network Multi-Function
Security appliance in all of its hotels in the United States.
Proventia Multi-Function Security appliances are powerful,
cost-effective, easy-to-use devices that stop viruses, worms, hackers,
spam and unwanted Web content before they can compromise vital
business assets or impact network uptime and productivity.
   "The network security of our hotels and the Hyatt enterprise is of
great importance to us," said Robert Bansfield, AVP - Information
Technology, Hyatt. "By deploying ISS' multi-function security
appliance in our hotels, we are confident that Hyatt's networks will
be well-shielded from the various dangers lurking on the Internet
since ISS' security technology is focused on protecting against
vulnerabilities rather than known exploits."
   "Having already implemented ISS intrusion prevention and
vulnerability assessment products at its corporate offices, the
transition to ISS protection within its U.S. hotels is the next
logical step for Hyatt," said Larry Costanza, senior vice president of
Americas sales for Internet Security Systems. "Much like Hyatt, ISS
has always maintained a unique focus on quality and impeccable
customer service, making us an inevitable choice for Hyatt in its
pursuit of a top-notch solution to protect its business and customers
from security breaches."
   Hyatt is implementing ISS' Proventia Multi-Function Security
appliance in order to help the organization comply with the VISA
Cardholder Information Security Program (CISP), which is required of
all entities that store, process or transmit Visa cardholder data. In
order to comply with Visa's CISP program, one of Hyatt's 2006
corporate directives was to deploy an intrusion prevention system
(IPS) at every U.S. hotel location.
   Hyatt chose the Proventia Multi-Function Security appliance due to
its integrated design, which combines the functionality of three
separate security devices required by Hyatt (IPS, firewall and Web
content filtering) into a single appliance with added features for
VPN, anti-virus and anti-spam technologies. ISS also incorporates its
unique Virus Prevention System (VPS) technology into its
multi-function appliances to complement existing anti-virus
capabilities. Unlike traditional anti-virus products, VPS technology
is behavioral-based and does not rely on signature updates to stop
viruses, worms and malicious code from impacting a network.
   Proventia Multi-Function Security appliances are well-suited for
implementation in remote and branch offices of enterprises where
security professionals can cost-effectively deploy the appliances and
know that their assets will be safe without the compromise of
legitimate business traffic or the need for specialized in-house
security resources. The appliances are ideal for an organization like
Hyatt that has hotel locations of varying sizes around the world.
   In addition to the cost and resource savings that Hyatt is
experiencing with ISS' multi-function security appliance, the company
is also benefiting from the central management capabilities of the
product. Through ISS' Proventia Management SiteProtector(TM) console,
Hyatt can control, monitor and report on its entire information
security infrastructure through one easy-to-use interface, further
simplifying security and compliance procedures.
   For more details on ISS' Proventia Network Multi-Function Security
appliance, please go to: http://www.iss.net/products_services/
enterprise_protection/proventia/m_series.php (Due to its length, this 
URL may need to be copied/pasted into your Internet browser's address 
field. Remove the extra space if one exists.)

   About Internet Security Systems, Inc.

   Internet Security Systems, Inc. (ISS) is the trusted security
advisor to thousands of the world's leading businesses and
governments, providing preemptive protection for networks, desktops
and servers. An established leader in security since 1994, ISS'
integrated security platform automatically protects against both known
and unknown threats, keeping networks up and running and shielding
customers from online attacks before they impact business assets. ISS
products and services are based on the proactive security intelligence
of its X-Force(R) research and development team - the unequivocal
world authority in vulnerability and threat research. ISS' product
line is also complemented by comprehensive Managed and Professional
Security Services. For more information, visit the Internet Security
Systems Web site at www.iss.net or call 800-776-2362.

   About Global Hyatt Corporation

   There are 215 Hyatt branded hotels and resorts (over 90,000 rooms)
in 44 countries around the world, operating under the Hyatt(R), Hyatt
Regency(R), Grand Hyatt(R) and Park Hyatt(R) brands. Currently, there
are an additional 32 Hyatt hotels and resorts under development,
including 11 new hotels in China. Hyatt Corporation (domestic U.S.,
Canada and Caribbean hotels) and Hyatt International Corporation
(international properties) are subsidiaries of Chicago-based Global
Hyatt Corporation. Global Hyatt Corporation is also the owner of Hyatt
Vacation Ownership, Inc. operators of the Hyatt Vacation Club
(timeshare and fractional residential product), Hyatt Equities, L.L.C.
(hotel ownership), Select Hotel Group L.L.C. (which owns, operates and
franchises AmeriSuites hotels, Hyatt Place and Summerfield Suites
hotels) and U.S. Franchise Systems, Inc. (which franchises Hawthorn
Suites, and Microtel Inns and Suites).
   From the U.S. and Canada, reservations for any Hyatt hotel
worldwide may be obtained by calling 1-800-233-1234 or logging onto
www.hyatt.com.

   Internet Security Systems and SiteProtector are trademarks and
Proventia and X-Force are registered trademarks of Internet Security
Systems, Inc. All other companies and products mentioned are
trademarks and property of their respective owners.