Alasdair Keane climbs aboard an electric boat in Norway.
The family alleges the firm knew the perpetrator was planning a “mass casualty event” but failed to contact the authorities.
The warning comes as work to spot and combat deepfakes ahead of the Senedd election is taking place.
Signal says its systems are secure but it is taking reports of targeted attempts to hack some officials “very seriously”.
Epic Games said it had to increase the price as the cost of running the game had “gone up a lot”