There are 500 million phone numbers for sale on the Internet after a massive data breach from Facebook users, and among them 2.2 million Portuguese who will see their information disclosed. The warning was issued by cybersecurity company Hudson Rock, which ensures that phone numbers are being sold through a Telegram “bot” active since January 12, 2021, and that they can be used in “smishing” and “other fraudulent activities.” . Mark Zuckerberg’s social network has already acknowledged the leak, which was due to a “vulnerability” that was guaranteed to be patched in August 2019. Many of the stolen numbers may be outdated, but the company recommends paying close attention to potential victims.