Re: Just an idea
Waiting 4 weeks would create problems and not solve any.
Put simply, organizations sometimes have to make quick decisions, or keep decisions (like a merger) quiet until they're announced. Any waiting period complicates things and might signal competitors and investors.
Attackers have time to prepare before they attack. "Do I think I might attack someone in 2 months? What about 6 months? Next year? I do? *buy domains*"