As we continue our deep dive into imposter scams, we’re taking a look at a new twist on tech support scams. Ever deal with a tech support scam? A warning pops up on your computer. It says your computer has a virus and gives you a number to call for help. You often end up paying hundreds of dollars to a scammer who pretends to deal with the fake virus. Now scammers are upping the stakes — instead of hundreds of dollars, people are unknowingly handing over tens or even hundreds of thousands of dollars to tech support scammers. Here’s how.

Scammers say and do things that can tell us they’re lying — and they’re not who they pretend to be. Of course, to hear or see those clues, we have to get past the panic scammers make us feel, thanks to the so-called emergencies they try to create. And since scammers are convincing, that can be hard to do. But recent scams are costing people their life savings, so here are some sure ways to spot the scammer.