The following new features affect cluster security.
User credential authorization
LSF has enhanced the security of authorizing user credentials. LSF uses an external authentication network to secure user credentials for the data stream between LSF clients and servers. LSF now has an enhanced version of the external authorization command eauth (named eauth.cve) that prevents users from changing the job user at the job submission time.
For more details on how to set up LSF hosts to secure the eauth command, refer to the README for Fix 501633.