How to Tell If a Call Is a Scam: Warning Signs and What to Do

October 4, 2026

The phone rings. A serious voice says they're calling from your bank, there's unusual activity on your account, and you need to act now. Or maybe it's someone crying who says, "Grandma, it's me, I'm in trouble."

In that moment, it's hard to think calmly, and that's exactly what the people behind these calls are counting on. The good news is that scam calls follow patterns you can learn to recognize. Here's how to spot them and what to do if you already picked up.

What is a scam call?

A scam call is when someone pretends to be a person or an organization you trust so they can take your money or your personal information. It's sometimes called "vishing," a blend of "voice" and "phishing," which is the trick of pretending to be someone trustworthy to steal passwords or personal details.

These calls don't just happen to people who aren't paying attention. Scammers rehearse their scripts, sound professional, and know how to use fear, urgency, and love against you. Falling for one is nothing to be ashamed of: it can happen to anyone.

What are the warning signs of a scam call?

You don't have to be an expert to notice that something doesn't add up. Here are some common warning signs:

They rush you: "You need to do this right now" or "If you hang up, your account will be locked."
They ask for information no one should ever ask for over the phone, like your PIN or the code you get by text.
They ask you to keep the call a secret, even from your family.
They ask you to pay in unusual ways: gift cards, transfers to strangers' accounts, or cash that someone will come by to pick up.
They tell you that you won a prize, but you have to pay something first to get it.
The story changes or gets confusing when you ask questions.
They ask you to install an app on your phone or give them access to your computer.
They pressure you with strong emotions: a family member in trouble, a debt, or a threat of arrest.

Keep in mind that the number on your screen can be fake. Scammers can make a call look like it's coming from your bank or a government office. That's why the number alone doesn't prove anything.

What do scammers say on the phone?

The scripts vary, but they tend to sound alike. These examples are made up, but they're similar to real calls:

"This is the security department at your bank. We detected a suspicious purchase, and we need you to confirm the code we just sent you."
"Grandpa, it's me, your grandson. I was in an accident and I need money right away. Please don't tell Mom and Dad."
"Your account will be locked today if you don't update your information with us."
"You have an unpaid fine and you could be arrested. To avoid that, you need to pay right now."
"Congratulations, you've won a prize! You just need to cover the shipping cost."

Notice that they all use the same trick: a strong emotion, like fear, excitement, or worry, combined with urgency. When you feel both at the same time, stop and don't make any decision in that moment.

What will your bank never ask for over the phone?

Your bank and other legitimate organizations have clear rules. Over the phone, they will never ask you for:

Your password or your PIN.
The code you get by text.
To move your money to a "safe account."
To install an app to "protect" your account.
To hand over your card to someone who comes to your home.

If someone asks you for any of these things, it's a scam, even if they know your name, your address, or other details about you. Scammers sometimes get that information before they call, just to win your trust.

What should you do if you get a suspicious call?

The most important thing to remember is that you can always hang up. It isn't rude: it's protecting yourself.

Hang up without giving any information, even if the caller insists or gets angry.
Don't confirm your name or answer personal questions.
If they say they're from your bank, call the number on the back of your card or on your bank's official website yourself. Don't use a number they give you during the call.
If they say they're a family member, hang up and call that person directly, or someone close to them.
Wait a few minutes before calling back, or use a different phone, in case the scammer is still on the line.
Tell someone you trust what happened before you make any decision.

How can you help your parents or grandparents avoid these calls?

Scammers often target older adults because they assume they'll be home and polite on the phone. Talking about it without scolding or scaring them is one of the best ways to protect them.

Agree on a family code word that only you know, so you can confirm who's calling in an emergency.
Repeat this rule together: no one in the family asks for money in secret.
Write down trusted numbers and keep them somewhere easy to see: the number on the bank card and the numbers of children or grandchildren.
Practice what to say when a call seems strange: "I can't talk right now. I'll call you back."
Remind them they can call you anytime if something seems off, without worrying that you'll judge them.

If your loved one has already talked to a scammer, listen calmly. Embarrassment keeps many people quiet, and staying quiet gives the scammer more time.

What should you do if you already gave money or a password?

If you already handed over money, personal information, or a password, don't blame yourself. What matters now is acting quickly and calmly.

Call your bank using the number on your card. Explain what happened and ask them to block your cards and review your account activity.
Change your passwords, starting with your bank and your email. If you used the same password anywhere else, change it there too.
If you installed an app they asked you to, get help from someone you trust to remove it and check your phone.
File a report with your local police or the consumer protection office where you live. Write down the time of the call, the number that showed up, and what they told you.
Tell your family. That way they can help you and stay alert in case the scammers call again.

After a scam, new calls sometimes come in promising to recover your money in exchange for a fee. Those are scams too. Be wary of anyone who asks you to pay up front to get back what you lost.

Remember the main idea: if a call makes you feel scared and rushed at the same time, hang up and check things out on your own. That pause is your best defense.

Educational article adapted with the help of artificial intelligence from its Spanish version, which the Watcher24 team reviewed before publication.