ISC StormCast for Tuesday, August 22nd, 2023

SystemBC Scans and ProxyNation
https://isc.sans.edu/diary/SystemBC%20Malware%20Activity%20/30138
https://cybersecurity.att.com/blogs/labs-research/proxynation-the-dark-nexus-between-proxy-apps-and-malware
Exchange Server Security Update Re-Release
https://techcommunity.microsoft.com/t5/exchange-team-blog/re-release-of-august-2023-exchange-server-security-update/ba-p/3900025
Ivanti Sentry Vulnerability Exploited
https://forums.ivanti.com/s/article/CVE-2023-38035-API-Authentication-Bypass-on-Sentry-Administrator-Interface?language=en_US
DUO Security Outage
https://status.duo.com/incidents/rw7g0q7ztj8f
mTLS Vulnerabilities
https://github.blog/2023-08-17-mtls-when-certificate-authentication-is-done-wrong/