March 11, 2005

Dear Customer,

Public reports have identified a virus that can be spread via MMS on Nokia Series 60 (and potentially other Symbian) phones.

We have not received any confirmed reports of customers encountering this virus, however we take the current published reports seriously, and believe that there is a potential risk for additional variants of the current virus threat.

The current virus is known as "CommWarrior". It spreads as an infected Symbian application that is attached to an MMS message.

The recipient receives a message with a subject such as one of the following:

• Norton AntiVirus Released now for mobile, install it!
• Nokia ringtoner Nokia RingtoneManager for all models.
• Security update #12 Significant security update. See www.symbian.com

The user is then presented with an option to "Install CommWarrior?". (And it is likely that the user will have to make an additional selection to confirm that they wish to install the application.)

If the user selects yes, then the CommWarrior application is installed on the Series 60/Symbian device. Of course, CommWarrior is actually a virus which after some delay, sends out infected MMS messages to other users in the individual's address book

End users need to show discretion in installing any applications that they receive unsolicited. However, it is likely that some naive users will install the application allowing the virus to spread.

This virus specifically targets handsets that are using the Symbian OS, including Nokia Series 60 phones such as the 7610, 6600, 3650, 6260, and 7650. It cannot infect other types of handsets. And it can only infect a Symbian handset if the user elects to install the application that they received unsolicited in the MMS message.

If you have received an MMS message that prompted you to install an unknown application, especially CommWarrior, and you mistakenly installed the application on your phone, then you should take steps to remove the virus from your phone. For additional information on this current virus threat, and links to anti-virus vendors, please see the information link below.

For customers who are using NowSMS as an MMSC, we are presenting a security update to NowSMS which can block the delivery of executable attachments to MMS messages for any subscribers to the NowSMS MMSC ("MMSC Users"). Please note that this update is only relevant for configurations where NowSMS is being used as an MMSC in a somewhat public environment (such as an operator MMSC deployment).

Please see http://www.nowsms.com/discus/messages/53/8153.html for a complete list of changes in this update patch for the Now SMS/MMS Gateway v5.51. That thread also contains a link for the download.

The following link contains more information regarding how the updated version of the NowSMS MMSC addresses this potential virus threat: http://www.nowsms.com/discus/messages/53/8795.html

Finally, we'd also like to remind you that Now Wireless will be exhibiting at the CTIA Exhibition in New Orleans next week. If you will be attending CTIA, please visit us at Stand 6015.

Sincerely,