Meta has officially launched a robust suite of anti-scam tools across its core platforms—Facebook, Messenger, and WhatsApp—to combat the rising tide of increasingly sophisticated cyberattacks. In a major security update announced on March 11, 2026, the tech giant revealed that it removed over 159 million scam-related advertisements in 2025 alone. However, acknowledging that criminals are constantly evolving their tactics, Meta is now deploying artificial intelligence and behavioral signaling to protect its billions of users from fraudulent friend requests and malicious device-linking attempts.
WhatsApp: Fighting Malicious "Linked Devices" Attacks
One of the most significant threats recently identified involves attackers exploiting WhatsApp’s "linked devices" feature. Scammers have been using malicious chat group invitations and deceptive codes to trick users into granting them access to their accounts. To neutralize this, Meta has introduced suspicious linking alerts on WhatsApp.
When the system detects behavioral signals suggesting a request might be fraudulent—such as a request originating from an unrecognized location or a suspicious device—the app will now trigger a warning. These alerts will explicitly show the origin of the request and warn the user that the attempt could be malicious, preventing unauthorized account takeovers before they happen.
Facebook: Cracking Down on Fraudulent Friend Requests
Facebook users are frequently targeted by "browser-in-the-browser" attacks and phishing schemes designed to harvest credentials. Meta is now testing advanced account warnings to help users navigate these risks when sending or receiving friend requests.
The new system flags accounts that exhibit signs of suspicious activity, such as:
Minimal Mutual Friends: Accounts reaching out without a verified social connection.
Location Discrepancies: Profiles that indicate a different country location than their actual network signal suggests.
Phishing Patterns: Accounts that mirror the behavior of known credential-harvesting bots.
These alerts empower users to make informed decisions to block or reject requests that could lead to identity theft or financial fraud.
Messenger: AI-Powered Scam Detection for New Contacts
Meta is also expanding its AI-driven scam detection for Messenger to a wider global audience. This tool is specifically designed to catch patterns common in scams, such as fraudulent job offers or "get rich quick" schemes.
When a user begins a chat with a new contact, the AI analyzes recent messages for red flags. If a potential scam is detected, Messenger will provide information on common tactics used by fraudsters and suggest immediate actions, such as reporting or blocking the account. Meta emphasized that these tools are part of a broader effort to stay ahead of criminals who use increasingly "sophisticated measures" to defraud people.
A Proactive Stance Against Global Threat Actors
The update comes at a critical time, as security analysts have noted global campaigns targeting encrypted services like WhatsApp and Signal. By integrating behavioral signals and real-time alerts, Meta aims to reduce the "threat surface" available to hackers. These tools are being rolled out gradually to Android and iOS users worldwide, ensuring a layered defense against the 159 million+ scams that attempt to penetrate the ecosystem annually.
Summary: Meta has launched new security tools on WhatsApp, Facebook, and Messenger to block scammers. Key updates include suspicious device-linking warnings on WhatsApp, AI-powered scam detection on Messenger, and fraudulent friend request alerts on Facebook. These measures target the 159 million+ scam adverts Meta faced in the past year, focusing on protecting user credentials and preventing account compromises.