Worldwide there was a warning according an issue around log4shell (
CVE-2021-44228) which caused a vulnerability of many cloud services. Swisscom’s security team informed all Swisscom services about this issue in time and Swisscom Trust Services investigated this issue carefully and mitigate this thread wherever necessary on systems which could potentially be affected. This means since Friday Dec. 10
th 2021 all systems are safe against this thread.