On Security - John George

One thing I learned from this week's lessons that I had not already heard of is that there is such a thing as a denial-of-sleep attack. This is when a sensor network that has a power-conserving sleep mode is constantly bombarded with traffic to keep it awake and prematurely run down the chemical power sources keeping the sensors powered, thus disabling the network until they are replaced.  I also learned about the CIA of Confidentiality, Integrity and Availability.  Although I was already aware of the concepts involved of keeping data private, intact, and accessible, now I have learned of a new way to refer to these concepts that I wasn't previously aware of.  I also had forgotten that the difference between a computer worm and a virus is that a worm is fully self-propagating, whereas a virus depends upon an e-mail program to transfer copies of itself to additional host computers.  I was already familiar with the fact that trojans are programs that contain malware ma...