A computer virus is alive and well on the International Space Station (ISS).

Nasa has confirmed that laptops carried to the ISS in July were infected with a virus known as Gammima.AG.

The worm was first detected on earth in August 2007 and lurks on infected machines waiting to steal login names for popular online games.

Nasa said it was not the first time computer viruses had travelled into space and it was investigating how the machines were infected.

It is thought that the virus might have travelled via a flash or USB drive owned by an astronaut and taken into space.