ggp1/internal/skills/catalog/last
internal/skills/catalog/last/SKILL.md
# last / lastb / lastlog — Login History ## Category Log Analysis ## License GPLv2 (util-linux / shadow-utils) ## Source Included in all Linux distributions. ## Purpose Display login history (`last`), failed login attempts (`lastb`), and per-user last login times (`lastlog`). ## Use Cases - Detect unauthorized logins - Identify brute-force patterns via failed attempts - Find accounts that have never logged in - Review login sources and timestamps - Detect logins from unusual IP addresses or
development
Updated Apr 21, 2026
$ install --global
skillsauthnpx skillsauth add ggp1/mitiga internal/skills/catalog/lastInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 21, 2026, 7:09 PM210.1s1 file scanned
SKILL.md
last / lastb / lastlog — Login History
Category
Log Analysis
License
GPLv2 (util-linux / shadow-utils)
Source
Included in all Linux distributions.
Purpose
Display login history (last), failed login attempts (lastb), and per-user last login times (lastlog).
Use Cases
- Detect unauthorized logins
- Identify brute-force patterns via failed attempts
- Find accounts that have never logged in
- Review login sources and timestamps
- Detect logins from unusual IP addresses or terminals
Examples
# Recent login history with full timestamps
last -n 50 -F
# Failed login attempts (requires root)
lastb -n 50 -F
# Per-user last login times
lastlog
# Logins for a specific user
last -n 20 username
# Currently logged-in users
last -w | head -5
Safety Notes
- Read-only operations — do not modify login records.
lastbrequires root or appropriate permissions to access/var/log/btmp.
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