'Fraud Technical Support' by the FBI Internet Crime Compaint Center (IC3) the agency released a public notice regarding the increase in fraudulent activity. By 2017, they receive 11,000 complaints with a total loss of $ 15 Million.
IC3 notes that criminals act as security, customers, or technical support representatives who offer to resolve the issue. And when contact is formed, they go to their plan.
It would be better if they caught them or filtered them, but did not warn them. All the same, there will be deceived people, so this is not a way out of the situation, but warned means armed.