Weekly CYBER NEWS

Cybersecurity Alert: GPU Rowhammer Breakthrough, Medusa Ransomware Surge, AI RCE Exploits & Nation-State Attacks (April 2026)

7 min · 8 de abr de 2026
Portada del episodio Cybersecurity Alert: GPU Rowhammer Breakthrough, Medusa Ransomware Surge, AI RCE Exploits & Nation-State Attacks (April 2026)

Descripción

In today’s Cybersecurity Alert, we unpack the most critical threats emerging in April 2026. A groundbreaking GPUBreach attack demonstrates how GPU Rowhammer techniques can escalate into full system compromise even bypassing traditional protections like IOMMU—raising serious concerns for AI infrastructure and cloud environments. We also examine Microsoft’s warning on Storm-1175, a fast-moving threat group deploying Medusa ransomware within hours of exploiting new vulnerabilities across enterprise systems. Meanwhile, attackers are actively targeting the Flowise AI platform with a CVSS 10.0 RCE flaw, exposing thousands of internet-facing instances. On the geopolitical front, we cover an Iran-linked password spraying campaign targeting Microsoft 365 tenants and DPRK actors abusing GitHub as command-and-control infrastructure. Plus, new developments in ransomware attribution as authorities identify key figures behind REvil and GandCrab. The key takeaway: attackers are accelerating faster than patch cycles—leveraging hardware, identity, and AI systems as new attack surfaces.

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episode Cybersecurity Daily: OpenAI Supply Chain Scare, Adobe Zero-Day, Marimo RCE Exploits & APT37 Social Engineering (April 2026) artwork

Cybersecurity Daily: OpenAI Supply Chain Scare, Adobe Zero-Day, Marimo RCE Exploits & APT37 Social Engineering (April 2026)

In today’s Cybersecurity Daily, we break down the most critical cyber threats impacting April 2026. OpenAI revokes its macOS signing certificate after the Axios supply chain compromise exposed risks to software-signing pipelines, highlighting how deeply modern attacks can reach into trusted development workflows. We also cover an actively exploited Adobe Acrobat Reader vulnerability (CVE-2026-34621) that enables remote code execution through malicious PDFs, alongside a rapidly exploited Marimo pre-auth RCE flaw where attackers began harvesting secrets within hours of disclosure. On the threat actor side, we analyze North Korea’s APT37 campaign, using Facebook, Messenger, and Telegram to deliver RokRAT malware through a trojanized PDF viewer—showing how social engineering is evolving into long-term trust-based intrusion. Plus, a CPUID supply chain attack distributing malware via CPU-Z and HWMonitor downloads, reinforcing that even official download sources can no longer be fully trusted. The key takeaway: trust is now the primary attack surface—from code signing to social platforms to software distribution.

13 de abr de 20265 min