Alternatively, they might train in a different manner than what you expect. They might have determined that your canaries (whether it is a unique string, URL o

Alternatively, they might train in a different manner than what you expect. They might have determined that your canaries (whether it is a unique string, URL or similar) have a low signal-to-noise ratio and not worth following up. Unless you provide more details, it's difficult to ascertain whether your conclusion is correct.