Based on a November 29th, 2011 broadcast of a John Hagee show I watched, I take it that Hagee believes in Conditional Security, though he did not use the term “Conditional Security.”
I do not recall his exact words, but he said something to the effect that “once saved, always saved” is not true.
He quoted a few verses from Galatians and a part of Revelation to “prove” that a Christian can lose his or her salvation, or that a Christian has to continue to be good or to do good works to retain one’s salvation.
He made some remarks about how a Christian cannot expect to live any old way he wants to and expect to be saved.
CS (Conditional Security) is a false teaching, since it is a works-based salvation. Hagee, and those like him, believe that the atoning work and blood of Jesus Christ is not enough for salvation, but that it is up to one’s own effort and goodness to “remain saved.”
Here are links to pages by other people about these issues: