Blackmail and extortion scams take place in many different ways. A common method is hacking your computer. The hacker takes ownership of your computer and "promises" to give your data back to you after you have paid him (usually with an untraceable cryptocurrency). If you do not pay, he threatens to publish your computer data on the Internet. Another form is where scammers email you stating that they installed malware on your computer and created videos of you visiting adult web sites.
Have you fallen for a hoax, bought a fake product? Share your scam story and warn others.