Hacker hijacks Brazil’s national alert system, sending “misanthropy” to millions of phones

INDUSTRY NEWS 2 min read Hacker hijacks Brazil's national alert system, sending "misanthropy" to millions of phones Graham CLULEY June 23, 2026 Promo Protect all your devices, without slowing them down. Free 30-day trial Picture the scene. You're in bed fast asleep, when suddenly your phone erupts with a blaring emergency siren. . You grab the phone. It's a flood warning for your region. Except where the details should be, every field just reads "misantropi4." That was the experience for millions of Brazilians in the early hours of Saturday, 20 June 2026. Somebody had broken into Brazil's national Civil Defence alert system and used it to send fake "Extreme Alert" notifications - the most severe category, normally reserved for warnings of imminent natural disasters - to mobile phones across at least five states, including São Paulo, Rio de Janeiro, and the Federal District. In case you were wondering, "misantropia" translates to "misanthropy": hatred or aversion to humanity. The first unauthorised alert was blasted out at around 11:40 pm on June 19 in Paraná. Over the next couple of hours, ten fake alerts were sent — nine via Cell Broadcast (which bypasses silent mode and overrides whatever is on a smartphone user's screen) and one via SMS. Each state civil defence agency was quick to confirm that none of its own people had pressed any buttons, and that there was nothing going on that would actually warrant an extreme alert. In a statement posted on social media, Brazil's National Civil Defence confirmed that it had pulled the alert platform offline at 1:30am following the compromise. Officials said there was no evidence of "structural damage" to the infrastructure, but have been unable to confirm just how many devices were actually hit. National Secretary of Protection and Civil Defence Wolnei Wolff confirmed that the attackers managed to regain access after an initial attempt to block them from accessing the system. No suspects have been positively identified so far. Brazil's Cell Broadcast system was introduced in the last couple of years, and only expanded to cover the entire country in October 2025. Thankfully, no dangerous instructions accompanied the alerts. If the public had, for instance, been told to evacuate or visit a malicious webpage then things could undoubtedly have been worse. The biggest loss was an interrupted night's sleep for many people. But the damage to trust is real. Emergency alert systems work because people believe them. Every time one of these systems issues a false alert - whether through negligence or a deliberate attack - trust erodes. The risk is that next time there is a genuine flood warning or landslide alert, some people will roll over and go back to sleep, assuming it is another hacker with a grudge against humanity. TAGS industry news AUTHOR Graham CLULEY Graham Cluley is an award-winning security blogger, researcher and public speaker. He has been working in the computer security industry since the early 1990s. View all posts RIGHT NOW TOP POSTS SCAM DIGITAL PRIVACY Instagram account recovery scams: how fake helpers steal your profile twice June 16, 2026 INDUSTRY NEWS How any Instagram account could be hacked in less than 10 minutes July 15, 2019 SCAM HOW TO Scammer phone number lookup. How to check if a phone number is a scam April 19, 2024 SCAM DIGITAL PRIVACY HOW TO How scammers gain access and hack your WhatsApp account and what you can do to protect yourself May 01, 2024 FOLLOW US ON SOCIAL MEDIA YOU MIGHT ALSO LIKE INDUSTRY NEWS Hacker hijacks Brazil's national alert system, sending "misanthropy" to millions of phones Graham CLULEY June 23, 2026 2 min read INDUSTRY NEWS SCAM Cybercrime now rivals traditional crime across parts of Asia Filip TRUȚĂ June 19, 2026 4 min read INDUSTRY NEWS Apple's Hide My Email tweak leaves privacy fans fuming Graham CLULEY June 19, 2026 2 min read BOOKMARKS You have no bookmarks yet. Tap to read it later.