According to Finnish security company F-Secure, the mobile phone virus Cabir
has now infected phones across 20 different countries
. Using Bluetooth, the virus has passed from phone to phone in many nations, including the US, China and Russia.
In order for a phone to become infected, the recipient has to first accept a request for his or her phone to connect with a nearby phone. In addition, the virus is only travelling when people travel the world. It does not do much harm once it infects a phone, other than trying to spread to other phones, but it does represent a pretty scary proof of concept, and might pave the way for more destructive cell phone viruses in the future.