Largest crypto exchange in Brazil confirms cyberattack as millions flow out of platform
Blockchain security companies said more than $46 million left the Mercado Bitcoin platform.
Blockchain security companies said more than $46 million left the Mercado Bitcoin platform.
In a post-mortem on an October 29 incident, prediction market Polymarket said it will pay people back what they lost, as well as compensate them for the site's downtime.
For the latest discoveries in cyber research for the week of 2nd November, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Binance, a global cryptocurrency exchange, has suffered a cyberattack resulting in the theft of approximately $6.3 billion in digital assets. Attackers reportedly compromised a DevOps engineer’s laptop and abused internal wallet infrastructure to authorize unauthorized withdrawals. The incident ranks among the largest cryptocurrency thefts ever…
KEV ✓ EPSS 0.83 CVSS 9.8 CVE-2026-111497 CVE-2026-118539 CVE-2026-76418 CVE-2026-98432 Linux Cisco Drupal Microsoft finance doprava školství obrana IL
The maintainer of BTCPay Server, an open-source cryptocurrency payment processor, has urged users to install the latest version as hackers have been draining "hot wallets" on instances running older versions. [...]
Written by: Christopher Romano, Codi Starks, Garrett Mahoney, John Wolfram, Josh Murchie, K Singh, Mathew Potaczek, Mike Lombardi, Rik Dolfing Introduction Mandiant responded to multiple incidents in 2026 in which threat actors hijacked enterprise access to Large Language Models (LLMs), a tactic known as "LLMJacking." Spanning a variety of cloud and LLM providers, these intrusions impacted organizations in North America, South America, and Asia Pacific across the financial services, retail,…
The FBI and U.S. Secret Service alleged this weekend that North Korean hackers were responsible for stealing more than $6.3 billion from cryptocurrency platform Binance last week.
The FBI has confirmed that North Korean state-sponsored hackers known as TraderTraitor were behind the $6.3 billion crypto-theft attack on Binance, making it the largest cryptocurrency heist on record. [...]
The Binance hack may have started with a compromised developer laptop, Binance says. See how that can lead to stolen funds and how to protect against it. Category: News
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Binance, the world's largest crypto exchange, has linked the theft of about $6.3 billion in cryptocurrency to a DevOps engineer's compromised laptop. [...]
Binance, the world's largest cryptocurrency exchange, confirmed Thursday that it had been hacked in a $6.3 billion cyber heist that blockchain investigators are blaming on North Korea.
Cryptocurrency exchange Binance is investigating a potential security breach involving up to $5.8 billion in digital assets, in what could become the largest cryptocurrency hack in history. [...]
Prediction market platform Polymarket temporarily suspended trading on Thursday after hackers compromised a third-party service to distribute cryptocurrency-draining JavaScript, with approximately $2.5 million in assets traced to a suspected attacker wallet. [...]
A fake cryptocurrency trading app called Padre Terminal, previously available on the Apple App Store for iOS devices, has been linked to the theft of approximately $23,000 from 27 Solana wallets. [...]
In this article Stages of AI adoption by North Korean threat actors AI use across North Korean threat operations AI-assisted targeting and reconnaissance AI-assisted social engineering and identity deception AI-assisted software and tooling development AI-assisted operational scaling and analysis Mitigation and protection guidance Microsoft Defender detections As Microsoft Threat Intelligence continues to track how threat actors operationalize AI to increase the speed, efficiency, and…
Socket’s threat researchers found three malicious Firefox extensions that impersonated the Phantom, Jupiter, and Bitget crypto wallets. Once installed, the malicious extensions stole recovery phrases and private keys, which would provide the attacker with full control of a wallet. A crypto wallet is an app, browser extension, or physical device that lets you manage cryptocurrency such as Bitcoin. Despite its name, it doesn’t actually hold your coins. Those are recorded on a blockchain, a shared…
This technical analysis details a sophisticated Android malware campaign targeting the Indian banking sector. The report examines seven distinct trojan families that facilitate banking fraud through coordinated phishing, credential theft, and unauthorized cryptojacking. Group-IB provides an in-depth breakdown of the attack chain, malware capabilities, and the infrastructure used to compromise mobile devices.
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A Nigerian national who worked with a group to hack tax prep businesses and conduct millions of dollars in fraud using customer data was sentenced this week.
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A Nigerian national was sentenced to eight years in prison for his involvement in a series of spearphishing attacks targeting US tax preparation businesses since 2019. [...]
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How criminals turn spend-management onboarding into fraud infrastructure, and why you may be accountable for the fraud you never see.
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Cybercriminals are selling forged identity documents, deepfake videos, and live verification services to help buyers bypass Know Your Client (KYC) checks. Flare examines how these underground services operate and the techniques used to create and maintain fraudulent verified accounts. [...]
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Nacionalni CERT upozorava građane na phishing kampanju putem SMS poruka u kojima se napadači predstavljaju kao Porezna uprava i obavještavaju primatelje da im je odobren povrat poreza. Cilj kampanje je navesti građane na odavanje osobnih i financijskih podataka, koji se potom mogu zloupotrijebiti za financijske prijevare. U poruci se nalazi poveznica koja vodi na lažnu internetsku stranicu. Od građana se najprije traži unos imena i prezimena, IBAN-a, broja mobitela i datuma rođenja, a zatim i…
In this article Uncovering the shadow world of a phishing kit ecosystem Storm-3119: YAM Store, the power broker Storm-2990: The Iron Man System phishing kit Downstream activity from Storm-2990 phishing kits Mitigation and protection guidance Microsoft Defender detections Over the past year, Microsoft uncovered a Chinese-language cybercriminal ecosystem, an interconnected network of phishing kit operators, developers, and an illicit marketplace selling tools and infrastructure for large-scale…
A new Android malware called Hirudo steals bank account credentials by replacing legitimate banking apps with modified versions that disable security checks. [...]
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Ledger cryptocurrency wallets sold through a Southeast Asian reseller had an implant allowing outsiders to drain funds, the company said.
Ledger has confirmed that some of its devices distributed through Southeast Asian reseller CryptoBilis were compromised with a hardware implant that drained users' cryptocurrency wallets. [...]
Elastic Security Labs identified a malicious npm package, @apexacc/cli, which led us to an operation posing as a Web3 accelerator. That operation had spent months building a public presence, targeting cryptocurrency start-ups and founders with offers of free AI credits and coding tools, along with security audits. The group also advertised an in-person event through a dedicated invitation page, adding to its efforts to appear legitimate. The tools delivered information-stealing malware and…
A Ukrainian-Russian dual citizen has pleaded guilty to running a massive money laundering operation that laundered millions for cybercriminals worldwide. [...]
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A Maryland man was found guilty of stealing more than $53 million after hacking the decentralized crypto exchange Uranium Finance twice in April 2021. [...]
The U.S. Department of Justice has announced the arrest of the alleged developer of Ploutus malware, used to steal millions of dollars in ATM jackpotting attacks across the United States. [...]
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The U.S. Treasury Department has sanctioned eight members of the Venezuelan gang Tren de Aragua (TdA) for their role in the theft of millions of dollars in ATM jackpotting attacks across the United States. [...]
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We found 70 websites that impersonate legitimate crypto projects that invite visitors to vote on the date of an upcoming rewards distribution. The pages copy the look of the real sites closely, and on most of them the offer is small and believable: Cast a vote, and as an active voter you get a 1.25x boost when the rewards are paid out. However, the vote is fake and clicking the Vote now button opens a wallet connection prompt. It’s the first step toward requests that could trick visitors into…
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Treasury’s Office of Foreign Assets Control (OFAC) targeted multiple Venezuelan nationals and several companies they control that are part of the effort to launder the money stolen from dozens of ATMs.
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Cryptocurrency exchange Bitget revealed today that attackers who stole $387.5 million last week breached its systems after exploiting a zero-day flaw in third-party security products. [...]
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Cryptocurrency exchange Bitget has resumed Bitcoin withdrawals suspended after suspected North Korean hackers breached its systems last week and stole over $350 million. [...]
The CEO said the company has a User Protection Fund that has over $464 million and those funds will be used to cover the losses.
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Cryptocurrency exchange Bitget disclosed today that suspected North Korean hackers have stolen $351.6 million from its hot and warm wallets. [...]
A new Android malware-as-a-service (MaaS) platform called RemControl is targeting users through malvertising campaigns that impersonate the TVTap IPTV application. [...]
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Group-IB uncovers RemControl, a new Android banking trojan targeting European, Middle Eastern and Canadian banks, whose criminal infrastructure was unknowingly built by AI.
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Researchers at Zimperium’s zLabs have analyzed an Android Trojan that uses an automated, multi-stage infection process. What’s new is that RatHat gives a live AI assistant the keys to the accessibility tree of the infected device and uses it to determine where to tap or scroll, rather than following a hardcoded script. The variable attack path makes it harder for signature- and rule-based mobile security tools to detect this Trojan. It also abuses Android Debug Bridge (ADB), a legitimate tool…
Only days after Revolut acknowledged that it disclosed sensitive customer records to an unauthorized party, affected customers are receiving phishing texts. However, we don’t know yet if the phishing texts are linked to the breach. The company had accepted fraudulent information requests sent from an email address on a legitimate government agency domain. Through this social engineering attack, rather than by gaining access to Revolut’s systems, the criminals obtained the following types of…
Most fraud platforms only see a threat once it becomes a transaction. This guide compares the top 5 fraud prevention platforms for banks and fintechs in 2026, including Group-IB, Feedzai, Sift, DataVisor, and Kount, and what actually separates them.
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A banking malware operation active since mid-2025 has been using a toolkit named KREMLIN to install malicious Chrome and Edge extensions that steal credentials, session tokens, and sensitive data. [...]
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Five alleged leaders of the Black Axe cybercrime syndicate, known for its involvement in global-scale cyber-enabled financial fraud, have been extradited to the United States to face wire fraud and money laundering charges. [...]
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British fintech Revolut confirmed disclosing sensitive customer data to fraudsters who submitted emergency data requests from a legitimate government email account.
Revolut has acknowledged that it disclosed sensitive customer records to an unauthorized party. The company had accepted fraudulent information requests sent from an email address on a legitimate government agency domain, according to TechCrunch. Revolut is a London-based banking and financial platform with more than 80 million customers globally, according to the company. Revolut describes this as an external impersonation scam, not an intrusion into its systems. It also says customer funds…
Elastic Security Labs has tracked REF9334, a Brazilian banking malware operation, since May 2025. Its toolkit is called KREMLIN (as named by the malware author, Kr3mlin4rt1st), though nothing about the operation is Russian. Lures impersonate twelve Brazilian banks; error messages and code comments are written in Portuguese, and the operators' Ethereum transactions cluster during São Paulo working hours. Over 15 months and seven campaigns, they built a malicious browser extension that installs…
An attacker breached an email marketing platform and launched targeted attacks against the newsletter subscribers of some of its customers, especially those working in cryptocurrency and adjacent fields. The incident was a supply-chain phishing campaign carried out through Brevo, an email marketing provider used by several cryptocurrency companies and other firms. Brevo initially said an attacker had gained access to 120 customer accounts, some of which were used to send phishing emails to the…
Researchers at Group-IB found that the Android banking Trojan Gigabud can create a separate work profile on an infected phone and run a cloned banking app inside it. The attacker can then carry out fraudulent transactions in the new profile, potentially separating them from signs of malware detected elsewhere on the device. To do this, Gigabud installs Vwork, a malicious version of the legitimate open-source tool Shelter. Shelter normally lets Android users isolate apps or run second copies of…
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As the cyber scam industry expands globally, the U.S. government wants banks to share more information about what's happening to their customers.
FortiGuard Labs examines how a new Casbaneiro campaign targeting Latin America uses geofencing and distributed servers to evade analysis and detection
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How the Gigabud Android banking trojan abuses Shelter, an open-source app cloner, and what that means for banks, users, and defenders.
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A Russian web developer who played a role in a multimillion-dollar bank account takeover scheme has been extradited to the U.S. to face an indictment.
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Public negotiations between hackers and the operators of the Liquid Network crypto platform ended with the attackers sending back most — but not all — of what they took.
Five Venezuelan nationals pleaded guilty to attempting to empty automated teller machines (ATMs) using malware in a series of ATM jackpotting attacks. [...]
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Introduction Beginning in 2024 Mandiant investigated a string of compromises affecting Brazilian financial services, retail, and eCommerce organizations. Google Threat Intelligence Group (GTIG) tracks this activity as BREEZE COMET (formerly UNC5669), a financially motivated threat actor specializing in manipulating payment systems and banking software in Brazil to conduct fraudulent transfers. This activity overlaps with operations publicly reported as Plump Spider and SHADOW-AETHER-064. In…
The Cronos blockchain network has resumed trading activity after a price-manipulation attack on the Tectonic cryptocurrency lending platform allowed an attacker to borrow $74 million. [...]
Federal law enforcement continued to warn about ATM jackpotting gangs as it announced guilty pleas from five Venezuelan nationals.
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At least $6 million was stolen from crypto platform Tectonic after an attacker manipulated the price of the Tonic coin over the weekend.
Group-IB expone una operación mexicana de PhaaS dirigida a más de 20 instituciones financieras, con capacidades de phishing en tiempo real, vishing con IA y RAT para dispositivos móviles.
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