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A: While that risk does exist, there are some limiting factors.
The creation, possession, or distribution of child pornography carries very serious penalties, not to mention social condemnation, even in some criminal circles, and one would hope this limits its use in malware schemes.
It would take a single person 5,246 centuries to watch all of it.
The malware infection rate isn’t known; a lot of the problem goes unreported.
Q: I’ve also read that some users receive pop-up messages on their screens saying things like, “Microsoft windows has detected that a porn virus has infected your system and is trying to steal pictures, data and social networking passwords.” How should a user respond to a message like that?
No sense in pretending this isn’t an issue; few things generate as much traffic online as pornography.