I was doing some site security tests a while back, and I noticed that certain inputs got cut off or disappeared. It was a lightbulb moment when I realized that

I was doing some site security tests a while back, and I noticed that certain inputs got cut off or disappeared. It was a lightbulb moment when I realized that the browser was eating all the input before the angle bracket. So be careful, since this can lead to an XSS injection if you're not escaping html entities.