A trojan which grants secret backdoor access to infected computers was found in software accompanying the Energizer Duo USB battery charger, which has been on sale since 2007. Energizer has now discontinued the product.

The safety warning went up recently over at the website for US-CERT (the United States Computer Emergency Response Team).

For folks with no firewall program, the software bundled with this device would install the “arucer.dll”, which would then initialize upon every Windows start up thereafter. This little program would listen for communication from port 7777, opening your computer up to outside access. From this open port, any files on your computer could be stolen.

Energizer has not released a comment on the matter. Having a trojan in your software isn’t good for business, so we are guessing that whoever wrote the Energizer installation software did not realize that their computer was infected, so the trojan was spread accidentally.

If you have this Duo charger, you should run virus removal software, or uninstall the software.

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