To clarify, the malware was running on the system that the mechanics use to log incidents. The plane had had three recent incidents that would have grounded the plane had they been known, but they weren't. The reason they weren't was a combination of the mechanic's neglect and possibly that the system was crippled by malware.<p>Here is a better article (Spanish to English translation): <a href="http://translate.google.com/translate?js=y&prev=_t&hl=en&ie=UTF-8&layout=1&eotf=1&u=http://www.elpais.com/articulo/espana/ordenador/Spanair/anotaba/fallos/aviones/tenia/virus/elpepiesp/20100820elpepinac_11/Tes&sl=es&tl=en&act=url" rel="nofollow">http://translate.google.com/translate?js=y&prev=_t&h...</a>