why-the-default-authentication-hadoop-is-unsecured ?

https://blog.samoylenko.me/2015/05/25/hadoop-without-kerberos-examples/

https://www.iteblog.com/archives/1606.html

https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/YarnApplicationSecurity.html

https://stackoverflow.com/questions/11371134/how-to-specify-username-when-putting-files-on-hdfs-from-a-remote-machine

https://community.hortonworks.com/questions/110020/how-to-prevent-users-from-modifying-hadoop-user-na.html

https://www.learningjournal.guru/article/hadoop/hadoop-security-using-kerberos/

https://stackoverflow.com/questions/55881435/why-the-default-authentication-hadoop-is-unsecured

https://blog.cloudera.com/blog/2012/03/authorization-and-authentication-in-hadoop/