>Researchers have discovered malware so stealthy it remained hidden for six years despite infecting at least 100 computers worldwide.<p>Maybe I am reading it the wrong way, but if we are talking of around 100 computers worldwide, the "despite" doesn't seem to me appropriate.<p>Given the context and the published map of victims it is clearly a very "targeted" kind of malware, so if it was limited to those "declared" victims and it is so well designed (with reference to its stealthness) I am not surprised at all that it passed below attention.