On the basis that many Mayhemers also frequent this forum I thought that I would mention that this afternoon Malwarebytes Premium is blocking my access to the Model Boat Mayhem forum due to a Trojan.
I have just done a search on Mayhem and the problem was discussed earlier this year. It seems to be associated with later versions/upgrades of Malwarebytes and the solution is to add the Mayhem URL to the allowed list.