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Satellites Are Rife With Basic Security Flaws
(www.wired.com)
This is a most excellent place for technology news and articles.
Reading this article made me wonder if a satellite can be turned off and then back on. I've never really thought about how satellites are maintained and serviced. You can't exactly send IT up there to fix things.
Normally, they’re not fixed. They just let it crash very literally and send up a new one. NASA’s apparently working on repairable satellites.