Thousands of people are bilked every year by criminals who enter the lives of their victims through their telephones. Not long ago, AARP found that about half of all mobile calls were fraudulent, and the problem was worsening. Fraudulent landline calls are declining as the technology fades, but scam calls to fixed lines still nab plenty of unsuspecting victims. And while seniors are often the target of scammers, the reality is that anyone can be taken for a ride if they're not careful. Here's everything you need to know about phone scams — including some that took advantage of coronavirus fears — how to avoid becoming a victim, and what to do if you are targeted.