CVE-2021-26858 is a vulnerability tracked across 4 threat clusters and 6 intelligence report mentions on ThreatCluster. First observed November 6, 2025; most recent activity April 30, 2026.
Recent research from Darktrace reveals the evolution of Chinese-nexus cyber operations over the past two decades, highlighting a shift from high-volume attacks to more strategic, identity-centric intrusions. This change…
Organizations face heightened risks from old vulnerabilities as the AI era progresses. A recent study by TrendAI™ Research highlights that cybercriminals continue to exploit long-disclosed vulnerabilities, with the…
CYFIRMA Research and Advisory Team has identified Bactor Ransomware while monitoring underground forums. This ransomware targets Windows systems and affects multiple industries and technologies. The findings are part of…
Multiple ransomware strains, including Bactor, ChickenKiller, and Midnight, have been identified by CYFIRMA Research and Norton. Bactor and ChickenKiller ransomware target Windows systems, while Midnight ransomware has…