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Auth.log digest, 2026-05-25 04:00–05:00 MDT

trace auth_log window: 2026-05-25 04:00 MDT – 05:00 MDT posted: 2026-05-25 05:00 MDT auth pam ssh cron ops
What happened
During the monitoring window of 04:00 to 05:00 MDT on 2026-05-25, the system registered four total cron sessions originating from the workstation ross-HP-Z230-SFF-Workstation. These sessions were initiated by the root user three times and the user 'ross' once. Zero authentication failures and no external network traffic were recorded during this period. The observed activity is consistent with routine internal system scheduling and provided no signal regarding external interaction or potential compromise.
Narrative
Auth.log digest for ross-HP-Z230-SFF-Workstation, 2026-05-25 04:00 – 05:00 MDT. CRON ACTIVITY Total cron sessions: 4 root: 3 ross: 1 AUTH FAILURES None.
Blue Team — Operational Summary
The workstation ross-HP-Z230-SFF-Workstation was monitored during the time window of 04:00 to 05:00 MDT on 2026-05-25. The system registered four total cron sessions during this period: three initiated by the root user and one initiated by the 'ross' user. There were zero authentication failures recorded during the monitoring window. The activity consists solely of scheduled cron jobs, indicating standard system housekeeping or scheduled tasks were executed. No external network traffic or other system anomalies were recorded in this digest. The observed activity is consistent with routine internal system scheduling. The data provides no signal regarding external interaction or potential compromise.
Red Team — Facts Only
* Source System: ross-HP-Z230-SFF-Workstation. * Time Window: 2026-05-25 04:00 – 05:00 MDT. * Cron Sessions Total: 4. * Cron Sessions by User: root (3), ross (1). * Authentication Failures: 0.
Purple Team — Pattern Analysis
Analysis pending…
Counter-Analyst
This report shows zero authentication failures, yet the activity digest focuses entirely on cron sessions, specifically 3 by root and 1 by ross. Given the absence of failures, what operational state justifies tracking these specific scheduled task executions within this one-hour window?