I would suggest that we can look at this matter at two different levels. First of all, there are the messages sent from people in the business sectors. They don't have malicious intent when sending out those emails. Maybe those are for a commercial purpose, but they're just abusing the system. This is one form of it.
What we are talking about here are the people who obviously have a malicious intent when sending out those emails, so what I am talking about is focusing on those people. For these kinds of people, I think that even with the most comprehensive legislation, you can't stop them from sending. The most effective way is to do it from the infrastructure level. We do it from either the ISP level or the infrastructure level to block these kinds of emails. This is the most effective way.
When we're trying to understand this situation, we need to understand that those origins are different. These are two totally different types of spamming emails that we're talking about.