Phone Scams: How to Block Spam and Dangerous Calls

Protect yourself from phone scams! Discover how to block spam calls, aggressive telemarketing, and premium-rate services with this practical guide.

Published on Nov 29, 2025
Updated on Nov 29, 2025
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In Brief (TL;DR)

Learn how to defend yourself against phone scams and aggressive telemarketing with this practical guide to recognizing and blocking unwanted calls and premium-rate services.

Find out how to identify suspicious numbers and protect your phone from unwanted subscriptions and persistent call centers.

Discover the most effective methods to block suspicious numbers and disable unwanted paid services.

The devil is in the details. 👇 Keep reading to discover the critical steps and practical tips to avoid mistakes.

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The phone rings. Once, this sound represented a moment of social connection, an invitation to conversation typical of our Mediterranean culture. Today, for millions of Italians, that ring triggers anxiety or annoyance. We live in an era where our most personal device has become the main gateway for fraud attempts, aggressive marketing, and identity theft.

Technological evolution has brought countless advantages, but it has also provided scammers with sophisticated tools to bypass traditional defenses. It’s no longer just about the classic unwanted sales call; we are facing full-fledged criminal organizations that exploit social engineering and loopholes in telecommunication systems. In Italy, the phenomenon has reached alarming proportions, indiscriminately affecting both digital-savvy youth and more vulnerable elderly individuals.

Phone security is no longer an option, but a fundamental skill to protect not only your wallet but also your daily peace of mind.

Defending yourself requires a change in mindset. It’s not enough to ignore calls; you need to understand the enemy’s tactics and use the right tools. In this guide, we will analyze how to recognize threats, which technologies to activate to filter them, and how to act promptly if you fall into the trap.

Smartphone displaying an incoming spam call alert with a block option on the screen
Seeing the caller’s number is the first step to security. Learn how to set up anti-spam filters on your device to prevent fraud.

The Landscape of Phone Scams in Italy

Italy consistently ranks at the top of European charts for the number of unwanted calls received per capita. This unfortunate distinction is due to a combination of legislative and cultural factors. On one hand, our habit of always answering, a legacy of innate courtesy, exposes us more. On the other, the illegal sale of phone number databases fuels a thriving black market.

Recent statistics indicate that an average user receives several spam calls per week. These range from simple aggressive “teleselling,” which often violates GDPR regulations, to complex scams aimed at emptying bank accounts. The line between an unfair business practice and a criminal offense is often thin and difficult for the average user to trace.

Scammers know that the legal system is slow and that tracing calls from VoIP servers located abroad is complex. For this reason, the first line of defense must necessarily be the end-user, armed with awareness and skepticism.

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The Most Common Techniques: Know Your Enemy

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To defend yourself effectively, you must be able to recognize the weapons used by attackers. Techniques evolve rapidly, but some remain timeless classics due to their effectiveness.

Wangiri: The One-Ring-and-Cut Scam

The Japanese term “Wangiri” literally means “one ring and cut.” The technique is as simple as it is insidious: the phone rings just once, usually from a foreign number (often Tunisia, Moldova, or the UK). Curiosity prompts the victim to call back. By doing so, they are redirected to premium-rate numbers that drain their phone credit in seconds.

Many users fall into this trap thinking they’ve missed an important call or a work-related one. It is crucial to never call back unknown international numbers unless you are expecting contact from abroad. To learn more about this specific mechanism, you can consult our article on the Wangiri scam and how it drains your credit.

Spoofing: The Identity Disguise

Spoofing is a technique that allows a scammer to fake the caller ID. The real number of your bank, the post office, or even law enforcement might appear on your smartphone’s display. This immediately lowers the victim’s defenses, as they believe they are speaking with a trustworthy institution.

Often, the fake operator warns of a “suspicious transaction” on the account and asks for credentials to block it. In reality, they are obtaining the very data needed to carry out the theft. Remember: no bank will ever ask for your full passwords or PIN codes over the phone.

Vishing: Voice Phishing

Vishing (voice phishing) combines voice with social engineering. Scammers use alarmist tones or promise easy money (online trading, cryptocurrencies). They prey on primary emotions: fear of losing money or greed. They often record your voice saying “yes” (perhaps in response to the question “Are you Mr. Smith?”) and then edit the audio to use it as consent for unsolicited voice contracts.

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The Psychology of the Scam: Why Do We Fall for It?

You shouldn’t feel foolish for falling for a phone scam. These schemes are designed by professionals in psychological manipulation. The key factor is urgency. By creating an emergency situation (“Your account is about to be blocked,” “Your son had an accident”), the scammer bypasses the rational part of the victim’s brain.

When emotions run high, intelligence runs low. Scammers know this and do everything they can to prevent you from having time to think or verify the information.

Furthermore, in the Italian context, there is a strong deference to authority. If someone introduces themselves as an “Inspector” or “Bank Manager,” we tend to cooperate. Added to this is the difficulty, especially for less digitally-native generations, of distinguishing between authentic and fraudulent communications in an increasingly paperless world.

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Technological Tools for Defense

Fortunately, the same technology that enables scams also provides us with shields to defend ourselves. Modern smartphones and third-party apps offer levels of protection that, if configured correctly, can filter up to 90% of unwanted calls.

Built-in Android and iOS Filters

Both Google and Apple have integrated anti-spam features into their operating systems. On Android, the Google Phone app flags suspicious calls in red or blocks them directly. On iPhone, you can enable the option to silence unknown callers, sending anyone not in your contacts directly to voicemail. For optimal setup, read our guide on how to put a definitive stop to spam calls.

Third-Party Applications

There are dedicated applications like Truecaller or Hiya that rely on huge collaborative databases. When a user reports a number as a “scam,” it is shared with the entire community. These apps are very effective, but they often require access to your contact list, raising privacy concerns that should be carefully considered.

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The Public Do-Not-Call Registry: Does It Really Work?

The Public Do-Not-Call Registry (Registro Pubblico delle Opposizioni – RPO) is the official Italian tool that allows citizens to object to the use of their number for advertising purposes. Since its reform in 2022, it also includes mobile numbers. Signing up is free and should revoke previously given telemarketing consents.

However, its effectiveness is not absolute. The RPO only binds operators who act legally. Illegal call centers, which often operate from abroad and use spoofing techniques, completely ignore this registry. Nevertheless, signing up is a fundamental step to reduce the volume of “legal” but annoying calls. If you haven’t done so yet, find out how to sign up for the Do-Not-Call Registry in just a few minutes.

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Blocking Premium-Rate Services and VAS

One of the costliest consequences of phone scams is the unintentional activation of value-added services (VAS): horoscopes, games, weather, or ringtones that deduct credit weekly. Often, a wrong click on a banner or a reply to an SMS is enough to subscribe.

The best defense is preventive: contact your phone carrier and request the “barring” or preventive blocking of all premium-rate services. This operation is free and protects your remaining credit from unauthorized charges. For more details on how to handle this threat, consult the guide on value-added numbers and how to block them.

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What to Do If You’ve Answered or Been Scammed

If you realize you have provided sensitive data or have had money stolen, time is the critical factor. Immediate action can significantly limit the damage.

  • End the communication: Hang up immediately. Don’t worry about being rude.
  • Block the number: Use your phone’s features to prevent further contact.
  • Contact your bank: If you have provided financial data, immediately call your institution’s toll-free number to block your cards.
  • Change your passwords: If you have given away login credentials, change them immediately from another secure device.
  • File a report: Report the incident to the Postal Police (the Italian cybercrime unit). Even if recovering the funds is not guaranteed, the report helps authorities map criminal activities.

Protecting the Most Vulnerable: The Elderly and the Very Young

The fight against scams is also a matter of intergenerational solidarity. The elderly, often alone at home, see the phone as a lifeline and are ideal prey for scammers pretending to be grandchildren in trouble or social security employees. On the other hand, the very young, despite being digital natives, can be naive about the privacy of their data.

It’s important to install anti-spam filters on your parents’ or grandparents’ phones and instruct them never to trust strangers. For the little ones, correctly configuring devices is essential to prevent them from ending up on dangerous sites or answering malicious numbers. Using parental control tools can be a great help in this regard.

Conclusion

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Defending against phone scams and spam requires a multi-layered approach: technological, legal, and psychological. There is no magic solution that eliminates 100% of the risks, but the combination of blocking tools, registration with the Do-Not-Call Registry, and a healthy dose of skepticism can make our digital lives much more peaceful.

The tradition of hospitality and conversation should not make us victims. On the contrary, we must adapt our way of communicating to modern times, becoming conscious guardians of our privacy. Always remember that our phone number is a digital house key: we would never give it to a stranger we met on the street, and the same principle must apply to those who call us.

Frequently Asked Questions

disegno di un ragazzo seduto con nuvolette di testo con dentro la parola FAQ
How can I block unwanted advertising calls on my cell phone?

The first essential step is to sign up for the Public Do-Not-Call Registry, a free service that now includes mobile numbers and revokes previously given marketing consents. However, since some call centers operate illegally from abroad, it is advisable to supplement this measure with the use of smartphone apps like Truecaller or Hiya, which automatically identify and block numbers reported as spam by the community.

What is the “yes” scam and how can I defend myself?

It’s an insidious technique where scammers record your voice saying the word “yes” and then cleverly edit it to simulate verbal consent to utility or phone contracts you never requested. To protect yourself, absolutely avoid answering with “yes” when you pick up the phone or when they ask for confirmation of your name; instead, use neutral responses like “hello,” “speaking,” or “who’s calling?”

What should I do if I get a ring from an unknown foreign number?

This is most likely the Wangiri or one-ring-and-cut scam. Scammers call for a split second hoping you’ll call back out of curiosity: if you do, you’ll be redirected to premium-rate numbers that drain your phone credit in seconds. The golden rule is to never call back and to block the contact immediately.

How can I tell if a call is from my bank or if it’s spoofing?

Spoofing is a technique that allows scammers to mask their number, making it appear on your display as the real number of your bank or an official institution. Remember that legitimate operators never ask for passwords, PINs, or OTP codes over the phone. If you have any doubts, hang up and call the official customer service yourself using the number on the back of your card or on the secure website.

Who can I report aggressive or illegal telemarketing to?

In Italy, you can report violations to the Data Protection Authority (Garante per la protezione dei dati personali) using the specific online form available on their official website. It is important to note the caller’s number, the time, and, if possible, the company they claimed to be calling on behalf of, to allow the authority to initiate investigations against unscrupulous operators.

Francesco Zinghinì

Electronic Engineer with a mission to simplify digital tech. Thanks to his background in Systems Theory, he analyzes software, hardware, and network infrastructures to offer practical guides on IT and telecommunications. Transforming technological complexity into accessible solutions.

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