When the Eye of Sauron gazes upon you, by nature of the gaze you are under suspicion. Depending what is found while the gaze is upon you might decide if you are guilty or not. However, you cannot be ruled out as a terrorist until you've been under that gaze. By falsifying your data just means that the gaze will be much more intense because you're clearly behaving in the manner of someone guilty. It takes time to determine if that guilty looking behavior is because of guilty actions or just some nerd trying to corrupt the data. Either way, you are behaving like a subversive, so you'll just be remembered for that for future investigations.