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This week’s ThreatsDay Bulletin tracks how attackers keep reshaping old tools and finding new angles in familiar systems. Small changes in tactics are stacking up fast, and each one hints at where the next big breach could come from. From shifting infrastructures to clever social hooks, the week’s activity shows just how fluid the threat landscape has become. Here’s the full rundown of what moved in the cyber world this week. International scam ring busted Fraudulent Call Centers Disrupted in Ukraine Authorities from the Czech Republic, Latvia, Lithuania, and Ukraine, along with Eurojust, took action against a criminal network operating call centers in Dnipro, Ivano-Frankivsk, and Kyiv that scammed more than 400 victims across Europe out of more than €10 million ($11.7 million). "The criminal group established a professional organisation with employees who received a percentage of the proceeds for each completed scam," Eur...

Today, every unpatched system, leaked password, and overlooked plugin is a doorway for attackers. Supply chains stretch deep into the code we trust, and malware hides not just in shady apps — but in job offers, hardware, and cloud services we rely on every day. Hackers don’t need sophisticated exploits anymore. Sometimes, your credentials and a little social engineering are enough. This week, we trace how simple oversights turn into major breaches — and the silent threats most companies still underestimate. Let’s dive in. ⚡ Threat of the Week UNC5221 Exploits New Ivanti Flaw to Drop Malware — The China-nexus cyber espionage group tracked as UNC5221 exploited a now-patched flaw in Ivanti Connect Secure, CVE-2025-22457 (CVSS score: 9.0), to deliver an in-memory dropper called TRAILBLAZE, a passive backdoor codenamed BRUSHFIRE, and the SPAWN malware suite. The vulnerability was originally patched by Ivanti on February 11, 2025, indicating that the threat actors studied the patch a...

Security, trust, and stability — once the pillars of our digital world — are now the tools attackers turn against us. From stolen accounts to fake job offers, cybercriminals keep finding new ways to exploit both system flaws and human behavior. Each new breach proves a harsh truth: in cybersecurity, feeling safe can be far more dangerous than being alert. Here’s how that false sense of security was broken again this week. ⚡ Threat of the Week Newly Patched Critical Microsoft WSUS Flaw Comes Under Attack — Microsoft released out-of-band security updates to patch a critical-severity Windows Server Update Service (WSUS) vulnerability that has since come under active exploitation in the wild. The vulnerability in question is CVE-2025-59287 (CVSS score: 9.8), a remote code execution flaw in WSUS that was originally fixed by the tech giant as part of its Patch Tuesday update published last week. According to Eye Security and Huntress, the security flaw is being weaponized to drop a .N...

Cybersecurity researchers have detailed an updated version of an advanced fingerprinting and redirection toolkit called  WoofLocker  that's engineered to conduct tech support scams. The sophisticated traffic redirection scheme was  first documented  by Malwarebytes in January 2020, leveraging JavaScript embedded in compromised websites to perform anti-bot and web traffic filtering checks to serve next-stage JavaScript that redirects users to a browser locker (aka browlock). This redirection mechanism, in turn, makes use of steganographic tricks to conceal the JavaScript code within a PNG image that's served only when the validation phase is successful. Should a user be detected as a bot or not interesting traffic, a decoy PNG file without the malicious code is delivered. WoofLocker is also known as 404Browlock due to the fact that visiting the browlock URL directly without the appropriate redirection or one-time session token results in a 404 error page. The cyb...