The scammers will contact you and claim to be from big companies such as Apple or Microsoft, or maybe show a pop-up message on a website to warn you about a technical problem on your computer or that they detected a virus or a malware. They will claim to be tech support from one of the big technology companies and offer to fix those problems because its making your computer unsafe. One they have said to have fixed the problem, they will send you a huge bills from helping you.