"The stuxnet software is exceptionally well written, it makes very very sure that nothing crashes, no outward signs of the infection can be seen and, above all, it makes pretty sure that its final payload, which manipulates parameters and code in the SPS computer is only executed if it is very certain to be on the right system. In other words: it is extremly targeted and constructed and build to be as side-effect free as humanly possible."

–Knowledge Brings Fear » Blog Archive » stuxnet: targeting the iranian enrichment centrifuges in Natanz?

[Reposted from jzx]