Liberty Trojan horse low threat to Palm users

August 29, 2000 Sophos Press Release

Sophos advises that a Trojan horse which deletes applications on the Palm operating system poses little threat to computer users.

The Palm/Liberty-A Trojan horse (also known as PalmOS/LibertyCrack or Crack 1.1) appears to have been distributed in the warez (pirated software) community as a crack for Liberty, an application to emulate a Nintendo Gameboy on your Palm PDA operating system.

Instead of illegally cracking the Liberty software (and allowing users access to functionality normally only available upon registration) the Trojan horse deletes all programs on your Palm PDA.

The author of Liberty, a Swedish lecturer called Aaron Ardiri, has admitted writing the Trojan horse and giving it to "a few friends".

At the time of writing Sophos has received no reports of this Trojan horse from customers, and do not believe it will become widespread.

"It has always been possible to write malicious software for the Palm operating system," said Graham Cluley, senior technology consultant for Sophos Anti-Virus. "This Trojan horse is a very low threat to Palm users who are sensible enough to avoid warez mailing lists and do not download pirated software. This combined with the Trojan horse's extremely obvious payload and lack of replication code means it is unlikely to be encountered by the vast majority of users."

Read more about Palm/Liberty-A.