[quote=@Techspert]
<Snipped quote by Mammalia>

Has he? It wouldn't change the monitoring equipment; it doesn't stop people, but only detects it. More than you know.
[/quote]

I see. But, you may remember a very, very old incident, during an era when universes filled with tremendous power were exceptionally common. One random day every year for 90 years, a villain by the name of Wraith showed up and destroyed a universe. For the rest of the year, he could not be found. At the end of the 90 years, he disappeared entirely and never returned.