Principle 8: CLIENT AND EMPLOYER: 2.03

2.03. Use the property of a client or employer only in ways properly authorized, and with the knowledge and consent of client or employer.

If we are going to publish something controversial about any person it is better to get the permission because anyone has a right to go for a court if they think that someone tried to insult their character so as an owner of a gossip site you are taking a huge risk.

It's better to avoid this risk by either getting the permissions from the relevant persons or being able to depend facts you are going to publish.