SANS Stormcast Thursday, February 19th, 2026: Malware Image Resuse; Dell RecoveryPoint; Admin Center Vuln; DNS-PERSIST-01

Tracking Malware Campaigns With Reused Material
https://isc.sans.edu/diary/Tracking%20Malware%20Campaigns%20With%20Reused%20Material/32726
From BRICKSTORM to GRIMBOLT: UNC6201 Exploiting a Dell RecoverPoint for Virtual Machines Zero-Day
https://cloud.google.com/blog/topics/threat-intelligence/unc6201-exploiting-dell-recoverpoint-zero-day
Windows Admin Center Elevation of Privilege Vulnerability CVE-2026-26119
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26119
DNS-PERSIST-01: A New Model for DNS-based Challenge Validation
https://letsencrypt.org/2026/02/18/dns-persist-01.html
Defending Web Apps
https://www.sans.org/cyber-security-courses/application-security-securing-web-apps-api-microservices