This is a copy from the message i received:
Your device is infected with a trojan virus and now have your private info out of your device.
It previously was installed on a porn video web page after which you've selected the video clip, your device was infected by the virus and gathered all your contacts. Then, your camera started to record you soloing and also recorded videos that you have seen.
Well, If you ever wish us to wipe out all your details that we have got, give us 1,800 USD in btc to the below address (if you don’t know this, search “how to buy btc” in Google) .
(It is cAsE sensitive, so copy and paste it)
You have 24 hours after receiving this message in order to make the payment. If I don’t get the payment, I will send the evidence to all of your contacts including relatives, coworkers, and so forth. Nonetheless, if I do get paid, I will erase the video immediately.