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A critical token validation failure in Microsoft Entra ID (previously Azure Active Directory) could have allowed attackers to impersonate any user, including Global Administrators, across any tenant. The vulnerability, tracked as CVE-2025-55241 , has been assigned the maximum CVSS score of 10.0. It has been described by Microsoft as a privilege escalation flaw in Azure Entra. There is no indication that the issue was exploited in the wild. It has been addressed by the Windows maker as of July 17, 2025, requiring no customer action. The CVE was formally issued on September 4. Security researcher Dirk-jan Mollema, who discovered and reported the shortcoming on July 14, said the shortcoming made it possible to compromise every Entra ID tenant in the world, with the likely exception of national cloud deployments . The problem stems from a combination of two components: the use of service-to-service (S2S) actor tokens issued by the Access Control Service (ACS) and a fatal flaw in th...

Not every risk looks like an attack. Some problems start as small glitches, strange logs, or quiet delays that don't seem urgent—until they are. What if your environment is already being tested, just not in ways you expected? Some of the most dangerous moves are hidden in plain sight. It's worth asking: what patterns are we missing, and what signals are we ignoring because they don't match old playbooks? This week's reports bring those quiet signals into focus—from attacks that bypassed MFA using trusted tools, to supply chain compromises hiding behind everyday interfaces. Here's what stood out across the cybersecurity landscape: ⚡ Threat of the Week Cloudflare Blocks Massive 7.3 Tbps DDoS Attack — Cloudflare said it autonomously blocked the largest distributed denial-of-service (DDoS) attack ever recorded, which hit a peak of 7.3 terabits per second (Tbps). The attack, the company said, targeted an unnamed hosting provider and delivered 37.4 terabytes in 45 seconds. It origi...

Malware isn't just trying to hide anymore—it's trying to belong. We're seeing code that talks like us, logs like us, even documents itself like a helpful teammate. Some threats now look more like developer tools than exploits. Others borrow trust from open-source platforms, or quietly build themselves out of AI-written snippets. It's not just about being malicious—it's about being believable. In this week's cybersecurity recap, we explore how today's threats are becoming more social, more automated, and far too sophisticated for yesterday's instincts to catch. ⚡ Threat of the Week Secret Blizzard Conduct ISP-Level AitM Attacks to Deploy ApolloShadow — Russian cyberspies are abusing local internet service providers' networks to target foreign embassies in Moscow and likely collect intelligence from diplomats' devices. The activity has been attributed to the Russian advanced persistent threat (APT) known as Secret Blizzard (aka Turla). It likely involves using an adversary-...

Cybersecurity researchers are warning about a new phishing campaign that targets Microsoft OneDrive users with the aim of executing a malicious PowerShell script. "This campaign heavily relies on social engineering tactics to deceive users into executing a PowerShell script, thereby compromising their systems," Trellix security researcher Rafael Pena said in a Monday analysis. The cybersecurity company is tracking the "crafty" phishing and downloader campaign under the name OneDrive Pastejacking. The attack unfolds via an email containing an HTML file that, when opened, displays an image simulating an OneDrive page and includes the error message that says: "Failed to connect to the 'OneDrive' cloud service. To fix the error, you need to update the DNS cache manually." The message also comes with two options, namely "How to fix" and "Details," with the latter directing the email recipient to a legitimate Microsoft Learn pag...