What in the world could possibly cause "unusually large score gains from a previous test"? Studying!
I know that after having failed a test, I've often buckled down, reviewed all the material from the beginning and aced the subsequent test.
Yet according to Caveon Test Security, I'd be a cheater.
I also take issue with "searching for data anomalies where the chances of random agreement are astronomical". On one recent test, a fellow student and I missed nearly exactly the same questions, because we were taught by the same TA.
We were both excellent students, with the same gaps in our knowledge, and the same mis-information on a few topics. We approached problems the same way, which led us to the same errors, exactly as we were taught.
The point is: Caveon's analysis is worthless. It apparently provides NO means to differentiate cheating from completely reasonable non-cheating explanations. All it can do is point out anomalies.
But if these tests are "used to determine graduation, graduate school admission and, the latest, merit pay and tenure for teachers", it is completely improper (and perhaps illegal?) to deny someone graduation, admission, pay, or tenure without PROOF, on the basis of an anomaly.
Really, these guys are peddling Snake Oil. Perhaps the TSA is buying?