WhatsApp strengthens its shield against scams with alerts for unknown numbers

Last update: 27 June, 2026
  • New verification screen that appears before starting chats with people who are not in your address book.
  • Improvements to device linking security to prevent account hijacking via QR codes.
  • Contextual information about the origin of the number and shared groups to identify potential fraud.
  • Expert recommendations for activating two-step verification and periodically reviewing active sessions.

Security and protection on WhatsApp

Security in our communications has become an absolute priority, especially in Spain, where fraud attempts through messaging apps continue to rise. It's not uncommon to receive a message on any given Tuesday from a completely unknown number. posing as a relative in distress or promising you a job with an outrageously high salary that, of course, doesn't exist. This situation has forced Meta to take action to prevent users from falling for these scams. social engineering networks which are becoming increasingly sophisticated.

To make things harder for thieves, WhatsApp is implementing a series of tools designed to give us a moment's peace of mind before we make a mistake. The idea is simple but effective: create a pause for reflection that forces us to look twice at who is writing to us and what their true intentions might be. It's not just about blocking, but about having useful information at hand to decide whether that chat deserves our attention or if it's better to simply delete it without replying.

WhatsApp scam alert.
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A barrier of trust before talking to strangers

Unknown contact alert on WhatsApp

One of the biggest new features coming to users' phones is a warning screen that pops up when you try to contact a number you don't have saved. Until recently, you could just start typing, but now the app analyze whether the contact is reliable And it shows us key details like the country of origin of the phone number. This is crucial because, if someone claims to be your cousin from Cuenca but the country code is from a remote country, you already have the first clue that something's not right.

In addition to identifying the person's origin, this new layer of security will tell us if we share any groups with them, helping to determine if they could be a real person in our network. This feature aims to curb the rise of phishing, where scammers They create fake profiles with stolen photos to quickly gain our trust. By requiring us to confirm that we really want to talk to this stranger, the sense of urgency that criminals often use to manipulate us is broken.

preview on WhatsApp
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It's important to note that the system doesn't notify the other person if you decide to end the chat or if you just stare at the security screen. This compromises our privacy. She remains fully protected while we investigate. whether the contact is legitimate or simply a bot trying to sneak in a malicious link. In places like Zamora or Madrid, where the app is used extensively for everyday tasks, these filters prevent many users, especially the elderly, from falling victim to financial scams.

The application is also working on automating the detection of these suspicious behaviors directly on the device. Although the messages remain encrypted, the software can identify if a message It contains typical scam patterns.such as strange spelling mistakes or unusual requests for codes and money. This is in addition to the existing option to mute calls from unknown numbers, creating a much calmer environment free from fraudulent interruptions aimed at stealing our personal information.

Data protection in mobile messaging

Protection against account hijacking and QR codes

Another open front is scams linked to technical access to our accounts. A very common method involves tricking the user into scanning a QR code on someone else's computer, allowing the attacker to take control of their conversations. To prevent this, WhatsApp has released an improvement that sends an immediate warning when a suspicious linking attempt is detected, including the approximate location of the device attempting to connect to our profile.

This alert is crucial because it gives us time to cancel the operation before the intruder can read our chats or send messages on our behalf. By detecting anomalies in location or devices that have never been used before, the platform It acts as a handbrake Against manipulation. If you weren't the one trying to open WhatsApp Web, this notification will save you from a nasty surprise by proactively blocking third-party access.

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Digital Security Tips

Although technology helps, common sense remains the best defense. Cybersecurity experts recommend that, upon receiving any suspicious message from a family member asking for money for a supposed emergency, the first thing to do is... make a conventional phone call to verify identity. Never share personal data that you should not share nor the account PIN, since these are the master keys that criminals seek to kick us out of our own application.

Here are some warning signs that should make you suspicious immediately:

  • messages with spelling or grammar mistakes which look like machine translations.
  • Urgent requests to click on links or download unknown files.
  • Promises of prizes, miraculous investments, or jobs without prior interview.
  • People claiming to be from technical support ask you to perform actions on your settings.

Constant improvements for a more reliable environment

Mobile security verification

The fight against cyber fraud in Spain, which already accounts for a large proportion of known crimes, requires constant vigilance and keeping the app updated. Regularly checking the linked devices section in the app settings is an excellent practice for this. make sure there are no open sessions that we don't recognize. The combination of these new trust alerts with two-step verification and know-how How to report scams on WhatsApp It creates a very solid barrier that protects both our private conversations and our banking data.

Staying calm when faced with messages demanding an immediate response and using the blocking and reporting tools offered by the platform are fundamental steps to avoid becoming just another statistic. Ultimately, being informed about how these new alerts work allows us to... browse the internet with much more peace of mindKnowing that we have control over who can contact us and who is left out of our circle of trust.

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