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…
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…
On Thursday, unknown attackers hijacked the official Microsoft account on X, which has over 13 million followers, in what appeared to be a pump-and-dump scheme promoting a crypto token. [...]
Available on Telegram for a $1,500 initiation fee and a recurring monthly $500 subscription, EvilTokens provided cybercriminals with artificial intelligence tools enabling them to compromise accounts, analyze breached inboxes and find the best methods for monetizing their access through fraud.
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…
Researchers analyzed a flood of fraudulent business emails and found that the threat actors had doubled-up on tactics to make them appear legitimate, including help from AI.
Every wave of technology excitement creates a new opportunity for cyberattackers, and AI is no exception. Microsoft Threat Intelligence has published research showing a growing set of campaigns that impersonate popular AI platforms and tools, including ChatGPT, Microsoft Copilot, DeepSeek, and Claude.1 The goal is to make phishing, search-driven malware campaigns, and malvertising—which is malicious advertising that uses online ads to lure users to harmful sites, downloads, or redirect…
Scammers are becoming more strategic about where they target people. Nine in ten toll scams—the fake unpaid-toll messages that threaten fines or license suspension—arrive by email or text, while roughly six in ten romance scams show up first on social media. That’s no coincidence. Rather than blasting the same message everywhere, criminals are tailoring different scams to the platforms where they’re most likely to succeed. This finding comes from Malwarebytes’ own threat research systems and…
Multiple extensions for Google Chrome and Microsoft Edge delivered a malware framework that deployed modules to steal cryptocurrency, sensitive data, and browser history, as well as inject ClickFix lures. [...]
We identified a network of 41 websites impersonating popular games and Windows software, all designed to push visitors towards the same Download Studio installer. The sites advertise everything from Counter-Strike, Half-Life, Fallout, Roblox, PUBG, and The Witcher to VLC, 7-Zip, Paint.NET, VMware, Total Commander, and Foxit PDF. They go to surprising lengths to look convincing, using accurate product information, genuine developer resources, and even real download links. But the link you see…