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Microsoft Windows CE Trojan

US-CERT is aware of reports of a trojan that affects Microsoft Windows CE. This trojan disables Windows Mobile application installation security.

The trojan may take any or all of the following actions on the mobile device:

  • spreads via seemingly legitimate application installation files
  • installs as an autorun program on the memory card
  • installs itself to the device when an infected memory card is inserted
  • protects itself from deletion by copying itself back to disk
  • replaces the browser's homepage
  • allows unsigned applications to install without warning
US-CERT encourages users to take the following preventative measures to help mitigate the security risks:
  • Install anti-virus software on the mobile device, and keep its virus signature files up-to-date.
  • Use caution when downloading and installing applications.
US-CERT will continue to provide more information as it becomes available.