This page automatically appears if there are a certain number of accesses within a specified period to inform you of its safety.

While many sites are safe, there has been a significant increase in emails and social media messages (short messages) impersonating financial institutions and directing users to suspicious sites.
At these destinations, sites resembling legitimate ones may request input of account information and passwords.
If entered, this could lead to fraudulent transactions and other damages.
If you have any concerns, please consult the FBI.gov:Scams and Safety or your nearest police station.