What "answering the phone" means in a security context
When security experts talk about "answering the phone," they are not just talking about picking up and saying hello. They mean the moment you decide whether to take a call, who you believe is on the other end, and what information you share before you hang up. The risk is that someone pretending to be your bank, your utility company, or a government agency can sound convincing enough to trick you into giving them passwords, account numbers, or personal details they should never have.
The core problem is that a voice on the phone tells you almost nothing about who is actually calling. Phone numbers can be spoofed — made to look like they are coming from a real organization when they are not. A caller can claim to be anyone. You cannot see their face or verify their identity the way you might in person. This gap between who they claim to be and who they actually are is where most phone scams live.
Key Takeaways
- Never give out passwords, Social Security numbers, credit card numbers, or one-time codes to anyone who calls you, even if they claim to be from your bank or a government agency.
- Legitimate organizations almost never call you asking for sensitive information — they already have it, and they know you know that.
- If you are unsure about a call, hang up and call the organization back using a phone number you find yourself on their official website or your bill.
- Scammers often create urgency by claiming your account is locked, your payment failed, or there is a legal problem — this pressure is a red flag, not a reason to hurry.
- Your phone's caller ID can show a fake number, so even if it says "Bank of America" or "IRS," the person on the line may not be from that organization.
Why you should never give sensitive information over the phone
If a real bank or government agency needs to verify who you are, they will ask you to confirm information they already have on file — the last four digits of your Social Security number, your account number, or the amount of your last deposit. They will not ask you to provide your full Social Security number, password, or the codes that appear in your authenticator app or text messages.
One-time codes — the six-digit numbers that text to your phone or appear in an app like Google Authenticator — are designed to prove you are the account holder. If someone calls you and asks for that code, they are trying to break into your account right now. Hang up when ready. A legitimate company will never ask for it by phone.
The same rule applies to passwords. Your bank does not need your password. Your email provider does not need your password. If someone calls claiming to be from either and asks for it, they are a scammer. Real organizations have other ways to verify you without ever needing that information.
How to tell if a call is actually from who they claim to be
The safest approach is to assume any unsolicited call — one you did not make first — could be fake. Caller ID spoofing is cheap and straightforward. Scammers can make a call appear to come from your bank's real phone number, your local police department, or the IRS. The number on your screen is not proof of who is calling.
If someone calls you claiming to be from a company or agency you do business with, tell them you will call them back. Then hang up. Do not use any phone number they give you. Instead, find the official phone number yourself: look it up on your bill, on the organization's official website, or by searching the organization's name plus "customer service" in a search engine. Call that number and ask if anyone from their organization just tried to reach you. They will have a record if it was real.
This step takes an extra five minutes but stops almost every phone scam. Scammers count on you staying on the line and staying flustered. Breaking the connection and calling back on your own terms puts you back in control.
Red flags that signal a scam call
Pressure and urgency are the loudest warning signs. Scammers often claim your account is locked, your payment failed, there is a legal problem, or you owe money and must act when ready. Real organizations give you time to handle problems. They send letters. They do not threaten you into giving up sensitive information over the phone.
Another red flag is when a caller asks you to do something unusual: buy gift cards, wire money, or install remote access software on your computer. Legitimate companies do not ask you to do these things to fix account problems. If someone is pushing you toward any of these actions, hang up.
Vague threats are also a sign of a scam. A caller might say "there is a problem with your account" without explaining what it is, or claim "we need to verify your information for security" without saying why. Real organizations are specific. They tell you exactly what happened and what you need to do. Vagueness is a tactic to keep you confused and compliant.
What to do if you have already given out information
If you gave a caller your password, one-time code, or credit card number, treat it as a security emergency. Change your password when ready from a device you trust — a computer or phone you know is yours. Use a strong password: at least 12 characters, mixing uppercase and lowercase letters, numbers, and symbols.
If you gave out a one-time code, the scammer may have already tried to access your account in the minutes after you hung up. Log into that account right away and check for any unauthorized activity. Look at recent login history, recent transactions, or any changes to your contact information or recovery email. If you see something wrong, contact the organization's customer service using a phone number you find yourself, not one the scammer gave you.
If you gave out your Social Security number or credit card number, consider placing a fraud alert with the credit bureaus. You can do this for free by contacting Equifax, Experian, or TransUnion. A fraud alert tells creditors to verify your identity before opening new accounts in your name. It does not prevent fraud, but it makes it harder for a scammer to open credit cards or loans using your information.
How to set up your phone to reduce unwanted calls
Most phones have built-in tools to filter spam and scam calls. On an iPhone, go to Settings, then Phone, then turn on "Silence Unknown Callers." This sends calls from numbers not in your contacts to voicemail. On Android, the process varies by phone, but most have a "Spam and Abuse" or "Call Screen" setting in the Phone app. Turn on spam filtering and let it block suspected spam calls automatically.
You can also add numbers to your block list manually. If a scammer calls from a specific number, block it. This does not stop them from spoofing a different number next time, but it stops that particular number from reaching you again.
Do not rely on these tools alone. They catch many scams but not all. The most important defense is still your own judgment: never give out sensitive information over an unsolicited call, and always hang up and call back on your own terms if you are unsure.
Frequently Asked Questions
What should I do if I think a call is a scam but I am not sure?
Hang up. If it is real, the organization will call back or send you a letter. If you are worried you missed something important, find the organization's phone number yourself and call them to ask if they tried to reach you. This takes a few minutes and costs nothing. Staying on the line with someone you do not trust costs much more.
Can my bank really call me and ask me to verify my account?
Yes, but they will ask you to confirm information they already have, not give them new information. They might say "Is your address still 123 Main Street?" and you say yes or no. They will not ask "What is your full Social Security number?" or "What is your password?" If they do, it is a scam.
What if the caller has information about me that only my real bank would know?
Scammers often have real information about you — your name, address, the last four digits of your account number — because they bought it from a data breach or a public record. Having some correct information does not mean the rest of what they say is true. Hang up and call the organization back yourself.
Is it safe to answer the phone if I do not recognize the number?
It is safe to answer, but you do not have to. You can let it go to voicemail. If it is important, they will leave a message or call back. If you do answer, do not give out any information. You can say "Who is calling?" and "What is this about?" but you do not have to stay on the line if you feel uncomfortable.
What if someone calls saying they are from my utility company and my bill is overdue?
Utility companies do send bills in the mail and do call about overdue accounts, so this can be real. But you should still verify. Ask for a reference number or account number, then hang up and call the utility company using the number on your bill. Give them the reference number and ask if that call was real. This takes two minutes and protects you completely.