I changed (kibana directory)/src/ui/public/chrome/directives/global_nav/global_nav.less file
as background-image: url("~ui/images/your-company-logo.png");
And put the logo file under the folder: (kibana directory)/src/ui/public/images/)
Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant
logo are trademarks of the
Apache Software Foundation
in the United States and/or other countries.