""The fake CAPTCHA has multiple steps, and each message crafted by the site is preconfigured with over a dozen phone numbers, meaning the victim isn't charged for just a single message - they're charged for sending SMSs to over 50 international destinations.""
""This type of scam also benefits from delayed billing, as the 'international SMS' charges often appear on the victim's bill weeks later and the experience with the fake CAPTCHA has been long forgotten.""
A telecommunications fraud campaign employs fake CAPTCHA tricks to deceive users into sending international text messages, leading to unexpected charges. Active since June 2020, the operation utilizes social engineering and back button hijacking. Researchers identified 35 phone numbers across 17 countries involved in the international revenue share fraud (IRSF) scheme. Victims are charged for multiple messages to over 50 destinations, with delayed billing allowing charges to appear weeks later. The scheme combines revenue share fraud with malicious traffic distribution systems to execute SMS scams on a large scale.
#telecommunications-fraud #captcha-scam #international-revenue-share-fraud #sms-scams #cybersecurity
Read at The Hacker News
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