ISC Stormcast for Tuesday, 21 April 2026 notes the ongoing ISC event with a threat level set to green. The diary lists the Handler on Duty as Xavier Mertens. It also references a podcast detail at sans[.]edu and invites readers to click to learn more about Johannes Ullrich’s classes for SANS. The page repeatedly directs readers to additional ISC resources, including links to the ISC homepage, diaries, podcasts, and data portals.
According to the page, the material is part of the ISC Stormcast publication for that date, with no specific incidents or advisories described beyond the general “green” status and the listed resources.