Document that SecurityManager is not supported atm
@@ -151,3 +151,5 @@ Distributed tracing will only work if you are using one of the supported network
`java.lang.NoClassDefFoundError: co/elastic/apm/jdbc/StatementInstrumentation`:
`org.osgi.framework.bootdelegation=co.elastic.apm.*`
* Other JVM languages, like Scala, Kotlin and Groovy have not been tested yet.
+* The agent does currently not support running on JVMs with an enabled `SecurityManager`.
+ You may see exceptions like this: `java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "getProtectionDomain")`
