However, a fact forum would be less informative on these, and such issues would distract from the progress we can make. Each section includes a table of sub-topics. Each table cell is or will be a link to a child page expanding on that sub-topic, and often with a table of links to further children. Ideally, prevention systems provide the analog of physical law for computation. For example, given a correct realization of the Java architecture, a Java applet could no more write to an arbitrary memory location than you or I can go faster than the speed of light.
Deterrence is more like the world of human military, legal, or commercial arrangements.
These systems seek to discourage attack by arranging for it not to be in anyone's interest to attack, or better, for it to be against the interests of those with the opportunity. On this topic, we can be badly mislead by our intuitions of the real world. One cannot punish an object by jailing it. Much of the world works by polite request, or admonition , and the decent willingness of others to often abide by these admonitions, even when there are no consequences for violation. Often, you can get someone to avoid endangering you just by asking them.