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> I swear I had not looked at your text before writing mine I'm asking this out of curiosity, rather than to imply either that it is the case or that if it wer

• jacquesm 14y ago
  No, I've already related that particular trick on several occasions to various people. I even remember the very first time I talked about it with a guy named Nick (who worked for me at the time) while walking in Toronto, we came across a utility plant (basically nothing but a very large transformer) on the edge of downtown that was so exposed that I thought it was unsafe and remarked how easy it would be to throw some chain over the wires. The station wasn't particularly big and I'm not sure how much damage such a move would have made but I still felt quite weird given that there ought to be at least a fair sized fence around an installation like that if only for safety. Low $ sabotage is an interesting subject, it shows well how asymmetry works to the advantage of an attacker, not unlike how our computer security is arranged for. Attackers only need to get through once, defenders have to succeed all the time. You by yourself could undo the work of many more people of a similar skill level. It's quite sobering to realize just how fragile all this stuff is.