CyberSecurity-Corpus

Public CyberRecord JSONL corpus of open, licence-safe cybersecurity knowledge for research and training.

This dataset was built from scratch from public feeds and open-source repositories.
It does not copy or derive from gated datasets such as WhitzardAgent/CyberSecurity-1M.

Schema (CyberRecord, schema_version: 1)

Each JSONL line is one record:

Field	Type	Notes
id	string	12-char stable hash of source|url|cve-or-key
title	string
source	string	short source id
_original_source	string	same as source
url	string	canonical URL
category	string	see below
cve	string|null	CVE-YYYY-NNNN when known
author	string|null
date	string|null	YYYY-MM-DD
tags	string[]
description	string	brief
markdown	string	full markdown body
exploit_code	string|null	e.g. nuclei template body when applicable
bounty	null	unused
extra	object	source-specific metadata
scraped_at	string	ISO8601 UTC
schema_version	int	1

Categories

vulnerability, framework, reference, tool, threat_intel, vuln_research, incident_response, offsec, ctf, bug_bounty, conference, news, ai_security, ics_ot, books

(Only categories with data appear in data/merged/.)

Layout

data/merged/{category}.jsonl   # primary splits by category
data/by_source/{source}.jsonl  # same records grouped by source
sources/LICENCES.md            # per-source licence notes
sources/books/                 # downloaded PD / USG book PDFs & texts
scripts/                       # reproducible build scripts

Record counts (this build)

Total: 2,328,955

By category

Category	Count
vulnerability	2,295,621
threat_intel	13,685
tool	7,738
framework	6,056
incident_response	2,110
vuln_research	1,724
ctf	903
offsec	473
books	350
ics_ot	171
reference	124

By source

Source	Count
osv	1,892,190
cvelistV5	398,867
nuclei_templates	14,026
threatfox	11,957
sigma	3,144
mitre_attack	2,257
cisa_kev	1,728
azure_sentinel	1,388
capec	615
atomic_red_team	344
ctf_0e85	280
ad_exploit_cheatsheet	245
owasp_asvs	211
atc	210
ctflearn_writeups	173
payloadsallthethings	141
owasp_cheatsheets	124
csivitu_ctf	109
washi_ctf	104
nist_sp800_53r5_book	94
nist_sp800_61	80
cloudgoat	66
htb_writeups	65
gutenberg_75074	57
pdkt_ctf	51
sajjadium_ctf	50
cisa_ir_playbooks	44
pagerduty_ir	36
cfi_ul_ctf	34
nist_sp800_12_book	33
friedman_military_cryptanalysis_p4	26
nist_sp800_100_book	23
friedman_elements_cryptanalysis	21
ceh_notes	20
gutenberg_48232	18
friedman_military_cryptanalysis_p1	18
kernelpwn	17
friedman_military_cryptanalysis_p2	17
nist_sp800_12r1_book	15
gutenberg_48871	14
jibeee_ctf	10
gutenberg_43515	10
palantir_ads	8
oriapp_writeups	6
pasticciotto	4
gutenberg_26839_ch11	4
secret_knowledge	1

Built at 2026-09-29T01:47:44Z (UTC).

Recently expanded: books (public-domain / USG / CC0)

Pure modern cybersecurity textbooks that are clearly PD/CC0 are scarce. This release therefore ships:

1. Classic public-domain cryptanalysis / cipher manuals (Project Gutenberg + NSA/Friedman USG CC0 OCR)
2. Closely related military signaling / telegraph code PD works
3. Longer NIST handbook-style Special Publications (US Government works), chunked as books (~4096 cl100k_base tokens)

Book	Author	Licence	Chunks
Elementary Cryptanalysis	Helen Fouché Gaines	Public domain (USA)	57
Manual for the Solution of Military Ciphers	Parker Hitt	Public domain (USA)	14
The Robinson Telegraphic Cipher	Stephen L. Robinson	Public domain (USA)	18
Visual Signaling	United States Army Signal Corps	Public domain (USA)	10
Mathematical Recreations and Essays — Chapter XI: Cryptographs and Ciphers	W. W. Rouse Ball	Public domain (USA)	4
Elements of Cryptanalysis (Training Pamphlet No. 3)	William F. Friedman	CC0 1.0 (US Government work; Internet Archive)	21
Military Cryptanalysis, Part I: Monoalphabetic Substitution Systems (3rd ed.)	William F. Friedman	CC0 1.0 (US Government work; Internet Archive)	18
Military Cryptanalysis, Part II: Simpler Varieties of Polyalphabetic Substitution Systems	William F. Friedman	CC0 1.0 (US Government work; Internet Archive)	17
Military Cryptanalysis, Part IV: Transposition and Fractionating Systems	William F. Friedman	CC0 1.0 (US Government work; Internet Archive)	26
NIST SP 800-12 Rev. 1: An Introduction to Information Security	NIST (Nieles, Dempsey, Pillitteri)	US Government work (not subject to copyright in the US)	15
NIST SP 800-12: An Introduction to Computer Security — The NIST Handbook	NIST (Guttman, Roback)	US Government work (not subject to copyright in the US)	33
NIST SP 800-100: Information Security Handbook — A Guide for Managers	NIST	US Government work (not subject to copyright in the US)	23
NIST SP 800-53 Rev. 5: Security and Privacy Controls for Information Systems and Organizations	NIST	US Government work (not subject to copyright in the US)	94

New books records: 350
Tokenizer: cl100k_base target ~4096 tokens/chunk.
Friedman volumes use Internet Archive DjVu OCR — expect scan artefacts (tagged ocr).

Previously expanded categories

Category	Count	Notes
incident_response	2,110	CISA/NIST playbooks, PagerDuty IR docs, Atomic Red Team, ATC response, Azure Sentinel hunting/detections
ctf	903	MIT/Apache CTF writeup & challenge repos from GitHub
offsec	473	PayloadAllTheThings, AD exploitation cheat sheet, CloudGoat labs, CEH notes (educational; no malware packaging)

Sources & licences

Compilation packaging: Apache-2.0. Individual records remain under their upstream terms — see sources/LICENCES.md.

Excluded on purpose: gated/NC datasets (incl. HackTricks CC BY-NC), GPL copyleft knowledge bases (GTFOBins/LOLBAS/ScoutSuite), Elastic License rules, vendor blog scrapes without redistribution rights, HackerOne bulk scrapes, cracked course dumps, copyrighted modern security textbooks (O’Reilly etc.), All-Rights-Reserved “free PDF” copies.

Intended use

• Retrieval / RAG corpora for defensive security assistants
• Classification and tagging experiments
• CVE / ATT&CK / detection-rule linking research
• CTF writeup / IR playbook / educational offsec note retrieval
• Historical cryptanalysis / NIST handbook retrieval (books)

Not a substitute for official CVE/NVD/OSV APIs for production vulnerability management. Always verify against primary sources. Offsec records are educational reference text, not attack tooling.

Rebuild

# See scripts/build_records.py, scripts/append_osv_threatfox.py,
# scripts/ingest_ctf_ir_offsec.py, scripts/ingest_offsec_extra.py,
# scripts/ingest_books_pd.py
# Requires clones/downloads under tmp/ and sources/books/ as documented in sources/LICENCES.md

Citation

If you use this corpus, please cite the upstream projects above and this dataset repo.