So, what I would recommend the people do just for security reasons is not to visit the Obamacare site and instead either register through Medicaid whose site likely is much more secure or to go to an Insurance Broker (who has access to literally all plans from all insurance companies in your state).
(At least until the Obamacare site has it's security up to a much higher level than it does now).
Most people going on this Obamacare site are lower income people like College students or people on fixed incomes at present. So, hopefully their private information won't be hacked and sold to the highest bidder worldwide.
If you want to see a humorous movie that goes into this in a lot of detail see:
Rating: 5.6/10 - 52,465 votesDirected by Seth Gordon. With Jason Bateman, Melissa McCarthy, John Cho, Amanda Peet. Mild-mannered businessman Sandy Patterson travels from Denver ...
By watching this and laughing you will not only understand how this works better, laughing about it all might be good for your health.