SANS Internet Storm Diary is reporting a dramatic increase in the scanning for a vulnerability in the CMS Movable Type – software similar in function to WordPress for the development of web sites and web content.
Scans for Movable Type Vulnerability (CVE-2021-20837) – SANS Internet Storm Centre
National Vulnerability Database – CVE-2021-20837 (nist.gov)
Check if this impacts you and check that the patches have been applied – a hacked web site is a cyber security issues and could be a PR and PII disaster.
If you do not know if this impacts you – then your business continuity documentation is not up to date!