Production hardening: security fixes, code quality, 724 skills complete

- Fix 25 shell=True subprocess calls with list-based commands
- Fix 49 verify=False in defensive skills (env-var override)
- Add timeout to 231 HTTP/subprocess/socket calls
- Fix 6 SQL injection patterns with whitelist validation
- Replace 8 __import__() with standard imports
- Remove 701 unused imports across 442 files
- Add authorized-testing disclaimers to all offensive skills
- Complete 11 incomplete skill directories
- Expand 10 stub SKILL.md files with full content
- Fix 2 YAML parse errors in frontmatter
- Fix 5 pre-existing syntax errors
- Convert 22 hardcoded paths/ports to environment variables
- Back up 21 redundant skill pairs to .bak
- Fix 2 global declaration errors
- 724/724 skills with full folder anatomy (SKILL.md + agent.py + api-reference.md + LICENSE)
- 0 compile errors across all 724 agent.py files

skills/building-threat-intelligence-feed-integration/scripts/agent.py

@@ -3,12 +3,13 @@
 
 import json
 import logging
+import os
 import argparse
 import hashlib
 from datetime import datetime, timedelta
 
 import requests
-from taxii2client.v21 import Server, Collection
+from taxii2client.v21 import Collection
 from stix2 import Indicator, Bundle, parse
 
 logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(levelname)s] %(message)s")
@@ -125,7 +126,9 @@ def push_to_splunk_ti(splunk_url, session_key, indicators):
         data = {"ip": ioc["value"], "description": f"{ioc.get('source')}: {ioc['value']}"}
         resp = requests.post(
             f"{splunk_url}/services/data/threat_intel/item/ip_intel",
-            headers=headers, data=data, verify=False,
+            headers=headers, data=data,
+            verify=not os.environ.get("SKIP_TLS_VERIFY", "").lower() == "true",  # Set SKIP_TLS_VERIFY=true for self-signed certs in lab environments
+            timeout=30,
         )
         if resp.status_code == 201:
             pushed += 1