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While the government's occasional use of webcams for spying purposes isn't a surprise to anyone who's been paying attention to the news, more benign public institutions have also dabbled in the practice.
A few years ago, one school's policy of remotely activating webcams came to a very public head when parents and students complained of privacy violations.
But while hacking using trojan horse viruses is the most malicious way to infiltrate a system, shifty websites sometimes use basic techniques that take advantage of human behavior patterns.