This adds specific pattern-spotting skills to the official vs fan leaks piece.
Visual red flags
Image quality too low to scrutinise. User interface items not consistent with Rockstar's known UI conventions. Photoshop artefacts. Titles/text added over legitimate trailer footage.
Textual red flags
Vague language - 'a friend of a friend who works at'. No link to a primary source. Hard, specific claims that contradict each other from day to day. Claims that are too convenient - exactly what fans have been asking for.
Behavioural red flags
The source vanishes when called out. Claims access they couldn't plausibly have. Asks for money or attention before revealing more.