Zone Labs ZoneAlarm and ZoneAlarm Pro Stop Magistr.B

SAN FRANCISCO–(BUSINESS WIRE)–Sept. 7, 2001–Recent reports indicate that a new strain of the Magistr virus (Magistr.B) can disable ZoneAlarm and ZoneAlarm Pro.

According to our tests, these reports are false. ZoneAlarm 2.6 and ZoneAlarm Pro 2.6 continue to protect PCs, even if Magistr.B is present and will deny the virus access to the Internet.

Both ZoneAlarm and ZoneAlarm Pro prevent the virus from being spread to other PCs.

While under some circumstances the Magistr.B virus is able to shut down the user interface portion of ZoneAlarm, ZoneAlarm continues to protect the PC and prevents the virus from being spread. Again, only the user interface of ZoneAlarm (which can be restarted by the user) is affected by Magistr.B. This does not affect the user’s security.

ZoneAlarm Pro goes even further to protect users. The MailSafe feature in ZoneAlarm Pro detects and quarantines malicious email attachments, including Magistr.B. ZoneAlarm Pro alerts users that a potentially malicious email attachment is present and warns the user not to open the quarantined attachment.

We recommend that users always run an updated anti-virus product along with ZoneAlarm or ZoneAlarm Pro to maximize protection for their PCs. Both ZoneAlarm and ZoneAlarm Pro prevent the virus from being spread to other PCs.

About Zone Labs Inc.

Zone Labs Inc. is a leading creator of Internet security solutions. Zone Labs produces patented TrueVector(TM) technology, the software platform on which the company builds its award-winning security solutions for consumers, small businesses, enterprises and service providers. Zone Labs’ product line includes the award-winning ZoneAlarm and ZoneAlarm Pro Internet security utilities which millions of PC users have downloaded, making them the de facto standards. Zone Labs Integrity, also built on the TrueVector platform, is a centrally managed endpoint security solution, protecting corporate data, productivity and reputation from hackers.

Founded in 1997, Zone Labs is a private company headquartered in San Francisco, California, USA. Strategic investors in Zone Labs include noted security luminary John McAfee, founder of McAfee Software, EastWest VentureGroup, Intel Capital, Oxford Bioscience Partners, Pacific Venture Group and Visa International. For more information, please contact Zone Labs at 415/341-8200 or visit

Editors’ Notes: TrueVector, ZoneAlarm, the Zone Labs logo and Zone Labs Integrity are trademarks of Zone Labs Inc. All other trademarks are the property of their respective owners.

ZoneAlarm Pro has received a WinList Award from the editors of, a “Best Security Product” award from the editors of PC World as well as an Editors Choice from PC Magazine in both 2000 and 2001. ZoneAlarm was awarded a CNET Editors Choice Award, a Home Office Computing Gold award, as well as a Best Buy Award and World Class Award from the editors of PC World in both 2000 and 2001

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