PGP Introduces PGP for Personal Privacy 5.5

SAN MATEO (Dec. 4, 1997) - Pretty Good Privacy, Inc. (PGP), the leading provider of strong encryption products for business and personal privacy, today announced PGP for Personal Privacy 5.5. This announcement continues the company's commitment to supporting both a personal privacy line of products for individual use, and business security products for organizations. PGP for Personal Privacy is interoperable with the recently released PGP Business Security Suite, which includes desktop (client) and server tools. The suite provides a comprehensive strong security solution to meet the needs of small businesses and major corporations alike.

PGP for Personal Privacy 5.5 allows individual users to easily and securely protect the privacy of their personal email messages, attachments and files with a single mouse click. The need for secure personal exchanges is growing as more and more people conduct confidential transactions online, whether conducting legal or personal communications, or sending email between a consultant and client. These types of digital records are subject to multiple points of vulnerability: at the Internet Service Provider (ISP's) mail servers, on the network and at points of delivery. For years, PGP has provided tools for securing individual communications across these insecure points, protecting data from origin to destination, or even saved on a storage device.

"PGP for Personal Privacy 5.5 not only features the point and click ease of encrypting and signing that we built into the previous personal product, but we actually made it simpler and more intuitive to perform operations like key searches," said Phil Dunkelberger, president and CEO of PGP. "We continue to set the standard for encryption protection for both businesses and individuals."

"I'm pleased that we are continuing to improve on the technology that launched PGP's heritage of strong encryption (128-bit minimum) for individuals to protect their communications and information," said Phil Zimmermann, chief technology officer of PGP.

PGP for Personal Privacy 5.5 is available on Windows 95/NT and Macintosh platforms with plug-ins to Microsoft Outlook, Microsoft Exchange, Eudora (Windows 95/NT and Macintosh versions) and Claris Emailer for the Macintosh.

PGP for Personal Privacy 5.5 features include:

• Email and file encryption, protecting data in all formats including email, spreadsheets, word processor documents, audio, video and folder storage
• Tight integration with the most popular operating systems and email applications, creating an intuitive interface for easy encryption, decryption, signature verification, retrieval and storage of public keys
• Interoperability with PGP's worldwide user install base, enabling communications with PGP's millions of freeware, personal and business users
• Seamless interface with PGP Certificate Servers, allowing quick and easy access to the global PGP public key infrastructure

Public Key Cryptography
PGP is based on a widely accepted and trusted encryption technology known as public key cryptography, in which two complementary keys are used to maintain secure communications. One of the keys is designated as a private key that only the user has access to and the other is a public key that the user freely exchanges with other PGP users. For example, if Alice wants to send a secure message to Bob, she encrypts the message with Bob's public key (if not already on her local key ring, Alice can easily obtain Bob's key from a public key server). Bob receives the encrypted message from Alice and decrypts it using his special private key. As Bob is the only person who has access to his private key, only he can decipher those messages which were encrypted using his public key.

Availability/Pricing
PGP for Personal Privacy 5.5 is available in Diffie-Hellman and Diffie-Hellman/RSA compatible versions. Each version is available for purchase (for US and Canadian customers) from the World Wide Web at http://www.pgp.com.

Costs are as follows:

• PGP for Personal Privacy 5.5 - Diffie-Hellman Web download $59.00
• PGP for Personal Privacy 5.5 - Diffie-Hellman box $79.00
• PGP for Personal Privacy 5.5 - Diffie-Hellman/RSA Web download $69.00
• PGP for Personal Privacy 5.5 - Diffie-Hellman/RSA box $89.00

About PGP
Pretty Good Privacy, Inc. based in San Mateo, California, is the pioneer and leading provider of applied cryptographic solutions for securing corporate digital assets and protecting individual privacy. PGP is committed to providing the most advanced security products for the digital age, safeguarding the communication and storage of information. With over four million users in 50 countries, and translations into 25 languages, PGP is the worldwide de facto standard for Internet e-mail and file encryption. For more information, visit our web site at http://www.pgp.com.

PGP and Pretty Good Privacy are registered trademarks of Pretty Good Privacy, Inc. This software uses public key algorithms described in U.S. patent numbers 4,200,770, 4,218,582, 4,405,829, and 4,424,414, licensed exclusively by Public Key Partners; the IDEA cryptographic cipher described in U.S. patent number 5,214,703, licensed from Ascom Tech AG; and the Northern Telecom Ltd. CAST Encryption Algorithm, licensed from Northern Telecom, Ltd. IDEA is a trademark of Ascom Tech AG. Other product names are trademarks of their respective owners.

With headquarters in Santa Clara, Calif., Network Associates, Inc., (Nasdaq: NETA), formerly McAfee Associates, is a leading supplier of enterprise network security and management solutions. Network Associates' product offering includes four individual software suites: Total Virus Defense, Total Network Security, Total Network Visibility and Total ServiceDesk, which can be centrally managed from within the Network Associates' NetTools unified management environment. For more information, Network Associates can be reached at (408) 988-3832 or on the Web at http://www.networkassociates.com.