**Phase 1: Completed pre-decoding.
       full event: 'Nov  1 14:54:03 melancia runuser: pam_unix(runuser:session): session opened for user root by (uid=0)'
       hostname: 'melancia'
       program_name: 'runuser'
       log: 'pam_unix(runuser:session): session opened for user root by (uid=0)'

**Phase 2: Completed decoding.
       decoder: 'pam'

**Phase 3: Completed filtering (rules).
       Rule id: '5501'
       Level: '3'
       Description: 'Login session opened.'
**Alert to be generated.