It does not use the original Flash code, making it significantly more secure.
The Debugger version distinguished itself through several critical features that the standard player lacked: adobe flash player debugger
The browser console said nothing. The network tab showed the file loaded. Your client was on the phone. And somewhere, deep inside the Flash Player runtime, an uncaught #1009 (null reference) was laughing at you. It does not use the original Flash code,
Using any version of the Flash Player Debugger today on a modern, internet-connected machine is highly discouraged. Because Adobe no longer issues security patches, the software is vulnerable to exploits that could allow unauthorized access to your system. How to Use Flash Content Today Your client was on the phone
Most users ran the “release” version of Flash Player. It was fast, lightweight, and utterly silent. If an error occurred—say, a misplaced MovieClip or a malformed NetStream —the release player did the worst possible thing: nothing . It failed silently, or froze at a random frame.