A brief daily summary of what is important in information security. The podcast is published every weekday and designed to get you ready for the day with a brief, usually 5 minute long, summary of current network security related events. The content is late breaking, educational and based on listener input as well as on input received by the SANS Internet Stormcenter. You may submit questions and comments via our contact form at https://isc.sans.edu/contact.html .
SANS Stormcast Tuesday, January 20th, 2026: Scans Against LLMs; NTLM Rainbow Table; OOB MSFT Patch
January 19, 2026
6:00
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"How many states are there in the United States?"
Attackers are actively scanning for LLMs, fingerprinting them using the query How many states are there in the United States? .
https://isc.sans.edu/diary/%22How%20many%20states%20are%20there%20in%20the%20United%20States%3F%22/32618
Closing the Door on Net-NTLMv1: Releasing Rainbow Tables to Accelerate Protocol Deprecation
Mandiant is publicly releasing a comprehensive dataset of Net-NTLMv1 rainbow tables to underscore the urgency of migrating away from this outdated protocol.
https://cloud.google.com/blog/topics/threat-intelligence/net-ntlmv1-deprecation-rainbow-tables
Out-of-band update to address issues observed with the January 2026 Windows security update
Microsoft has identified issues upon installing the January 2026 Windows security update. To address these issues, an out-of-band (OOB) update was released today, January 17, 2026
https://learn.microsoft.com/en-us/windows/release-health/windows-message-center