{"id":958,"date":"2025-07-20T17:03:33","date_gmt":"2025-07-20T20:03:33","guid":{"rendered":"https:\/\/holfik.com\/golpistas-usam-antenas-falsas-para-fraudes-via-sms\/"},"modified":"2025-07-20T17:03:33","modified_gmt":"2025-07-20T20:03:33","slug":"golpistas-usam-antenas-falsas-para-fraudes-via-sms","status":"publish","type":"post","link":"https:\/\/holfik.com\/en\/golpistas-usam-antenas-falsas-para-fraudes-via-sms\/","title":{"rendered":"Scammers Use Fake Antennas for SMS Fraud"},"content":{"rendered":"

Fake Antennas<\/strong> are becoming a serious problem in the digital fraud scenario, especially via SMS.<\/p>\n

In this article, we'll explore how scammers use these illegal antennas, located on high-rise buildings, to send mass fraudulent messages and deceive unsuspecting victims.<\/p>\n

With the ability to send hundreds of thousands of messages in a single day, these persuasion tactics create a sense of urgency, leading people to click on dangerous links or contact fake call centers.<\/p>\n

We will analyze recent cases in S\u00e3o Paulo and other cities, as well as the challenges faced by users and mobile operators in detecting and preventing these scams.<\/p>\n

<\/strong><\/p>\n

Overview of the Fake Antenna Scam<\/h2>\n

Scammers are using fake antennas to send Fraudulent SMS<\/strong>, assuming the identity of banks, stores and delivery companies.<\/p>\n

These antennas are strategically positioned on tall buildings, with a range of up to 2 km<\/strong>.<\/p>\n

From this position, the antennas are capable of firing more than 100,000 messages in a single day<\/strong>.<\/p>\n

The main objective is to alarm victims by creating a sense of urgency<\/strong> in messages, often involving unauthorized financial transactions, as exemplified in messages such as: \u201cLoan made<\/u> in the amount of R$ 2,500. Wasn't it you? Talk to the center\u201dReported scam about sending loan SMS<\/a>.<\/p>\n

Operators are able to detect these activities due to interference on their networks, thus enabling the location and deactivation of these illegal antennas.<\/p>\n

However, users have no way to avoid receiving<\/strong><\/u> of these fraudulent messages, which makes this type of scam even more dangerous and widespread in several cities Recent operation focusing on deactivating antennas<\/a>.<\/p>\n

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  1. Antennas send more than 100 thousand SMS per day.<\/li>\n
  2. Messages create a strong sense of urgency.<\/li>\n
  3. It is common to use messages pretending to be from banks.<\/li>\n
  4. Users cannot avoid receiving messages.<\/li>\n<\/ol>\n

    Antenna Operational Capacity and Range<\/h2>\n

    Fake antennas have the astonishing ability to send more than 100,000 messages per day, exploiting fundamental elements of telecommunications technology.<\/p>\n

    They are positioned in strategic locations, such as tall buildings, increasing signal effectiveness.<\/p>\n

    Through an unauthorized process, these antennas connect to the network of legitimate operators, enabling the issuance of SMS messages to numerous potential victims.<\/p>\n

    The central mechanism of these antennas resembles a base station, capturing frequencies and emitting signals in a clandestine manner.<\/p>\n

    Range up to 2 km<\/strong><\/u> allows them to affect a vast number of mobile devices.<\/p>\n

    According to Anatel, the technology used, often called fake ERB, can hijack 2G network frequencies, complicating immediate detection by operators.<\/p>\n

    Additional information about this operation can be found at Anatel report<\/a>, which details the measures underway to mitigate these crimes.<\/p>\n

    Fraudulent Message Strategies<\/h2>\n

    Criminals have used fake antennas<\/strong> to send fraudulent SMS messages, creating a sense of urgency in their victims.<\/p>\n

    Tactics include the use of disguised malicious links<\/strong> important announcements from banks or delivery companies.<\/p>\n

    Victims are persuaded to believe that immediate action is required, such as confirming a suspicious card purchase or scheduling a delivery.<\/p>\n

    This forces the person to click on links and provide sensitive data, which is then used by scammers.<\/p>\n

    Another prevalent strategy is the installation of fake telephone exchanges<\/u>, which simulate real care.<\/p>\n

    Messages indicating potential problems, such as account locks or duplicate subscriptions, prompt the recipient to call these fraudulent call centers urgently.<\/p>\n

    Calls result in the collection of personal information, making scams even easier.<\/p>\n

    Even with advances in detection, victims remain exposed until the illegal devices are disabled.<\/p>\n

    Example of fraudulent messages:<\/p>\n