The 1998 remake of the "McPherson Tape".

Originally aired on UPN, this found footage video was apparently mistaken as fact when it aired after "Real Vampires: Exposed!", a tabloid investigation of vampires. This was compounded by the fact that it had no preceding disclaimer and some channels cut out the ending credits which reveal that it was portrayed by actors.

https://en.wikipedia.org/wiki/Alien_Abduction:_Incident_in_Lake_County