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Some weeks are loud. This one was quieter but not in a good way. Long-running operations are finally hitting courtrooms, old attack methods are showing up in new places, and research that stopped being theoretical right around the time defenders stopped paying attention. There's a bit of everything this week. Persistence plays, legal wins, influence ops, and at least one thing that looks boring until you see what it connects to. All of it below. Let's go. ⚡ Threat of the Week Citrix Flaw Comes Under Active Exploitation — A critical security flaw in Citrix NetScaler ADC and NetScaler Gateway (CVE-2026-3055, CVSS score: 9.3) has come under active exploitation as of March 27, 2026. The vulnerability refers to a case of insufficient input validation leading to memory overread, which an attacker could exploit to leak potentially sensitive information. Per Citrix, successful exploitation of the flaw hinges on the appliance being configured as a SAML Identity Provider (SAML IDP)...

Another week in cybersecurity. Another week of "you've got to be kidding me." Attackers were busy. Defenders were busy. And somewhere in the middle, a whole lot of people had a very bad Monday morning. That's kind of just how it goes now. The good news? There were some actual wins this week. Real ones. The kind where the good guys showed up, did the work, and made a dent. It doesn't always happen, so when it does, it's worth noting. The bad news? For every win, there's a fresh headache waiting right behind it. New tricks, old tricks dressed up in new clothes, and a few things that'll make you want to go touch grass and never log back in. But you will. We all do. So here's everything that mattered this week — the wins, the warnings, and the stuff you really shouldn't ignore. ⚡ Threat of the Week Tycoon 2FA and LeakBase Operations Dismantled — The infrastructure hosting the Tycoon2FA service, which Europol said was among the largest advers...

This past week has been packed with unsettling developments in the world of cybersecurity. From silent but serious attacks on popular business tools to unexpected flaws lurking in everyday devices, there’s a lot that might have flown under your radar. Attackers are adapting old tricks, uncovering new ones, and targeting systems both large and small. Meanwhile, law enforcement has scored wins against some shady online marketplaces, and technology giants are racing to patch problems before they become a full-blown crisis. If you’ve been too busy to keep track, now is the perfect time to catch up on what you may have missed. ⚡ Threat of the Week Cleo Vulnerability Comes Under Active Exploitation — A critical vulnerability (CVE-2024-50623) in Cleo's file transfer software—Harmony, VLTrader, and LexiCom—has been actively exploited by cybercriminals , creating major security risks for organizations worldwide. The flaw enables attackers to execute code remotely without authorization...

Ever wonder what happens when attackers don’t break the rules—they just follow them better than we do? When systems work exactly as they’re built to, but that “by design” behavior quietly opens the door to risk? This week brings stories that make you stop and rethink what’s truly under control. It’s not always about a broken firewall or missed patch—it’s about the small choices, default settings, and shortcuts that feel harmless until they’re not. The real surprise? Sometimes the threat doesn’t come from outside—it’s baked right into how things are set up. Dive in to see what’s quietly shaping today’s security challenges. ⚡ Threat of the Week FBI Warns of Scattered Spider's on Airlines — The U.S. Federal Bureau of Investigation (FBI) has warned of a new set of attacks mounted by the notorious cybercrime group Scattered Spider targeting the airline sector using sophisticated social engineering techniques to obtain initial access. Cybersecurity vendors Palo Alto Networks Unit 4...

Behind every click, there’s a risk waiting to be tested. A simple ad, email, or link can now hide something dangerous. Hackers are getting smarter, using new tools to sneak past filters and turn trusted systems against us. But security teams are fighting back. They’re building faster defenses, better ways to spot attacks, and stronger systems to keep people safe. It’s a constant race — every move by attackers sparks a new response from defenders. In this week’s ThreatsDay Bulletin, we look at the latest moves in that race — from new malware and data leaks to AI tools, government actions, and major security updates shaping the digital world right now. U.K. moves to tighten cyber rules for key sectors U.K. Debuts Cyber Security and Resilience Bill The U.K. government has proposed a new Cyber Security and Resilience Bill that aims to strengthen national security and secure public services like healthcare, drinking wat...