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mukul975
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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
44 lines
1.9 KiB
Markdown
44 lines
1.9 KiB
Markdown
# API Reference: Insider Threat Investigation
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## Data Sources
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| Source | Log Type | Key Fields |
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|--------|----------|------------|
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| DLP System | File transfers, USB connections | user, action, file_path, bytes, device_id |
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| Email Gateway | Sent/received/forwarded emails | sender, recipient, subject, attachment_size |
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| VPN / Auth Logs | Authentication events | user, timestamp, source_ip, result |
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| Cloud Access Broker | SaaS application activity | user, app, action, data_volume |
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| Badge Access | Physical access events | user, location, timestamp, direction |
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## Microsoft Graph API (for Microsoft 365 environments)
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| Endpoint | Method | Description |
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|----------|--------|-------------|
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| `/auditLogs/signIns` | GET | User sign-in activity logs |
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| `/security/alerts` | GET | Security alerts including DLP |
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| `/users/{id}/activities` | GET | User activity feed |
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| `/users/{id}/mailFolders/{id}/messages` | GET | Email messages (eDiscovery) |
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## Exabeam UEBA API
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| Endpoint | Description |
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|----------|-------------|
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| `/api/users/{user}/timeline` | User activity timeline with risk scores |
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| `/api/users/{user}/risk` | Current risk score and contributing factors |
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## Python Libraries
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| Library | Version | Purpose |
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|---------|---------|---------|
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| `csv` | stdlib | Parse exported log files |
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| `json` | stdlib | Report generation and data exchange |
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| `datetime` | stdlib | Timestamp parsing and time-window analysis |
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| `requests` | >=2.28 | API access for UEBA and SIEM platforms |
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## References
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- CISA Insider Threat Guide: https://www.cisa.gov/topics/physical-security/insider-threat-mitigation
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- NIST SP 800-53 (PS-6 Access Agreements): https://csrc.nist.gov/publications/detail/sp/800-53/rev-5/final
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- Microsoft Purview Insider Risk: https://learn.microsoft.com/en-us/purview/insider-risk-management
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- MITRE Insider Threat: https://attack.mitre.org/techniques/T1078/
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