The Professional scams can falsify certificates, or even use some real company's name and certificate, but this person is not related to the firm. Cases of phishing are getting more and more popular among scammers as this is more convincing.
There is a wise saying: Greater power comes greater responsibility.
The Internet is a very good marketing tool, not without risks and snares. So, the risk is also great, even to experienced traders, they may get into seller's traps and sometimes buyer's deception.
To be successful in the business, one has to be honest, not to be a cheat, and always keep your promises, and not get cheated. Do your Business Intelligence, search, ask for authentications and ask the tough questions and demand direct answers.