Joomla Content History SQLi attack blocked.

Hello

we are receiving event id 400 stating.......

[SID: 28940] Web Attack: Joomla Content History SQLi attack blocked. Traffic has been blocked for this application: SYSTEM 

and

[SID: 29972] Attack: Apache Struts CVE-2017-5638 attack blocked. Traffic has been blocked for this application: SYSTEM 

We do not have Joomla on this server or network nor do we have and Apache server.

Is this a cause to be concerned?

Thank you