Demande rançon suite à installation de Malware

Bonjour,

J'ai reçu aujourd'hui le message suivant :

"I hope you don't mind my english sentence structure, considering that im
from Philippines. I infected your machine with a malware and now have all
of your private files out of your operating system.

It was installed on a mature web page and then you have chosen the video
clip, viewed it, my program instantly gain access to your system.

Afterward, your cam captured you wank, also i captured a video that you've
looked at.

Immediately after a short while it also picked up all your social contact
info. If you happen to want me to remove your everything i have - transmit
me 900 us in btc it's a cryptocurrency. Its my btc account address -
1MTtFuS8XieWAfCZ5Q5XhY1seq7Jk3mGG4

Now you will have 28 hrs. to produce a decision Once i will receive the
transfer i'm going get rid of this movie and everything completely. In any
other case, please be certain that this video is going to be sent to your
contacts."

Pensez-vous qu'il puisse s'agir d'une arnaque ?
Ou bien y a-t-il un risque ?
Sachant que le rançonneur ne donne aucune preuve à l'appui.

Merci