ISC StormCast for Wednesday, September 8th, 2021

Microsoft MSHTML Remote Code Execution Vulnerability CVE-2021-40444
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40444
ProntonMail/VPN Releasing User's IP Address
https://protonmail.com/blog/climate-activist-arrest/
What's App End To End Encryption Questioned (but upheld)
https://twitter.com/evacide/status/1435288900587589632?s=20
PRIVATELOG and STASHLOG Malware Store Payload in Common Log File System (CLFS)
https://www.fireeye.com/blog/threat-research/2021/09/unknown-actor-using-clfs-log-files-for-stealth.html