Indeed. For the record, I don't think it borders on paranoia. It's just basic rigor, the simplest and easiest way to ensure someone isn't pulling your chain.
This story happens to be corroborated by several other sites, which was pointed out to me with all the aplomb of a serial villain explaining his full-proof plan to the tied-up protagonist:
Originally posted by Tzeentch._
Anyway, the article is parroted on Fox, MD and the Telegraph... it took me three seconds to find that out on google..
...but it's at least nice to have it confirmed.