"Verizon Wireless will protect our customers against these kinds of
assaults on their privacy, and we will use every weapon in our legal arsenal
to shut down identity-theft operations.

Aladdin Knowledge Systems to Participate in Nine Upcoming Investor Conferences in May June

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,
seeking among other things an injunction barring Source Resources from
acquiring, possessing or selling confidential Verizon Wireless customer
account information without a valid court order or the customer's express
consent.

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Verizon Wireless brought
the lawsuit after one of its customers reported that his confidential wireless
phone records had been secured without his permission by Source Resources.com.

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J. Source Resources agreed to cooperate with Verizon Wireless by
surrendering records of its transactions and information about how it
previously obtained customer records.verizonwireless.

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consumer service companies.

com.

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(Nasdaq: ALDN) today announced it will participate in nine upcoming investor
conferences throughout May and June of 2005:

(Logo: http://www.

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, Verizon Wireless announced
today that it has secured a court order to halt a Tennessee-based company's
illegal practice of obtaining and selling confidential telephone records of
Verizon Wireless customers.
Verizon Wireless' record of protecting customer privacy puts it at the
forefront of the U.Aladdin.

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, in New Jersey State Superior Court in Somerset County , N.
Superior Court Judge Harriet Derman ordered a permanent injunction against
Source Resources Tuesday as part of a settlement between Verizon Wireless and
the company. The company also broke with
the wireless industry by becoming the first to announce it would protect
customer privacy by refusing to participate in a national wireless phone
directory.

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CHICAGO, Aladdin Knowledge Systems, Ltd.

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Most recently, the company filed ground-breaking lawsuits against
two telemarketing firms who had flooded Verizon Wireless customers with
unwanted calls. Headquartered in
Bedminster , NJ, Verizon Wireless is a joint venture of Verizon Communications
(NYSE: VZand LSE: VOD).

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com/multimedia .newscom.

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-based Source
Resources Inc.
"Accessing a person's personal telephone records without a valid court
order or the customer's permission is illegal," said Steven Zipperstein,
General Counsel and Vice President of Legal and External Affairs at Verizon
Wireless.com/cgi-bin/prnh/20040416 /CGALADDINLOGO )

* May 11-12, Piper Jaffray Technology Conference -- New York, NY
Yanki Margalit, CEO

* May 15, CIBC Israeli Arena Conference -- Tel Aviv, Israel
Yanki Margalit, CEO

* May 16, UBS Israel One-on-One Conference -- London, UK
Erez Rosen, CFO

* May 17, AeA Micro Cap Financial Conference -- San Francisco, CA
Steve Langerock, CEO, Aladdin North America

* May 18, Deloitte Touche TMT Business School Workshop -- Crete, Greece
Erez Rosen, CFO

* May 23, CSFB Security Summit -- New York, NY
Yanki Margalit, CEO

* May 24-25, UBS Software + IT Services Conference -- New York, NY
Yanki Margalit, CEO

* June 1, TWST "Investing in Israel" -- New York, NY
Erez Rosen, CFO

* June 2, FBR Growth Conference -- New York, NY
Erez Rosen, CFO

About Aladdin Knowledge Systems
Aladdin Knowledge Systems Ltd . Aladdin's Software DRM products allow software
publishers to limit revenue loss from software theft and piracy.

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About Verizon Wireless
Verizon Wireless owns and operates the nation's most reliable wireless
network, serving 47.

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"
The lawsuit was filed by Verizon Wireless July 8th against Source
Resources, which advertised on its Internet site the capability to secure
confidential wireless telephone records for a fee.

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In August 2004, the company
won a permanent injunction against a group that was "spamming" Verizon
Wireless customers with unsolicited text messages.4 million voice and data customers. Its security
products are organized into two segments: Software Digital Rights Management
(DRM) and Enterprise Security.

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Theft of Verizon Wireless Customer Records By Tennessee Company Halted

BEDMINSTER, N.

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To preview and request broadcast-quality video
footage and high-resolution stills of Verizon Wireless operations, log on to
the Verizon Wireless Multimedia Library at http://www.verizonwireless. Its
Enterprise Security solutions enable organizations to secure their information
technology assets by controlling who has access to their networks
(authentication) and what content their users can utilize (content security).

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Earlier this summer , Verizon Wireless sued Cookeville, Tenn. Find more information on the Web
at http://www. is a global provider of security solutions
that reduce software theft, authenticate network users and protect against
unwanted Internet and e-mail content, including spam and viruses.
Visit the Aladdin Web site at http://www.