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2adfc10
Add Ellio:Community feed
elliotechayush Sep 11, 2023
502af80
Add free Validin DNS database to the list of OSINT sources
warmer Oct 27, 2023
93d58b4
Merge pull request #260 from warmer/patch-1
hslatman Apr 10, 2025
9956d7e
Remove Alexa top 1 million - no longer active and not coming back
Apr 24, 2025
0e24583
Merge pull request #289 from nkroberts01/remove-alexatopmillion
hslatman May 8, 2025
b3a0310
Merge pull request #258 from elliotechayush/main
hslatman May 16, 2025
a49904e
Update README.md
marcruef May 30, 2025
ea05fbd
Add Q-Feeds
Q-Feeds Aug 1, 2025
d7b7c2b
Merge pull request #297 from Q-Feeds/main
hslatman Oct 2, 2025
297dbc9
Merge pull request #292 from marcruef/patch-1
hslatman Oct 2, 2025
9128547
Reorder Q-Feeds and ELLIO
hslatman Oct 2, 2025
9fe3a60
Merge pull request #299 from hslatman/herman/cleanup-20251002
hslatman Oct 2, 2025
8be99ba
Add the Open Cybersecurity Schema Framework (OCSF)
hslatman Oct 3, 2025
ca348f0
Merge pull request #300 from hslatman/herman/ocsf
hslatman Oct 3, 2025
74cd740
add OCSF
k4otix Jan 8, 2023
b49df60
Merge OCSF entries
hslatman Oct 3, 2025
a0e5fff
Remove Netlab 360
hslatman Oct 4, 2025
1829eab
Merge pull request #301 from hslatman/herman/ocsf
hslatman Oct 4, 2025
82bbbf8
Add CTI-Transmute
hslatman Oct 10, 2025
2c81c99
Merge pull request #302 from hslatman/herman/cti-transmute
hslatman Oct 10, 2025
300afed
Reorder some tools alphabetically
hslatman Oct 10, 2025
798677a
Update `lychee` action
hslatman Oct 10, 2025
d7d1c48
Merge pull request #303 from hslatman/herman/cleanup-20251010
hslatman Oct 10, 2025
62ffc8a
Add GriffinGuard description to README
HarmGriffioen Oct 27, 2025
fe20631
Merge pull request #304 from hslatman/herman/ci
hslatman Dec 15, 2025
d769f5a
Merge pull request #308 from HarmGriffioen/patch-1
hslatman Jan 19, 2026
bc47192
Add IPASIS - real-time bot detection and IP reputation API
theadsguy Apr 18, 2026
e506c84
Merge pull request #358 from theadsguy/add-ipasis
hslatman May 31, 2026
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2 changes: 1 addition & 1 deletion .github/workflows/links.yml
Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ jobs:
- uses: actions/checkout@v2
- name: Link Checker
id: lychee
uses: lycheeverse/lychee-action@v1.0.8
uses: lycheeverse/lychee-action@885c65f3dc543b57c898c8099f4e08c8afd178a2 # v2.6.1
with:
args: --verbose --no-progress **/*.md **/*.html
env:
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91 changes: 70 additions & 21 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -27,14 +27,6 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
AbuseIPDB is a project dedicated to helping combat the spread of hackers, spammers, and abusive activity on the internet. It's mission is to help make Web safer by providing a central blacklist for webmasters, system administrators, and other interested parties to report and find IP addresses that have been associated with malicious activity online..
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<td>
<a href="http://s3.amazonaws.com/alexa-static/top-1m.csv.zip" target="_blank">Alexa Top 1 Million sites</a>
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<td>
The top 1 Million sites from Amazon(Alexa). Never use this as a <a href="https://www.netresec.com/?page=Blog&month=2017-04&post=Domain-Whitelist-Benchmark%3a-Alexa-vs-Umbrella" target="_blank">whitelist</a>.
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<a href="https://docs.google.com/spreadsheets/u/1/d/1H9_xaxQHpWaa4O_Son4Gx0YOIzlcBWMsdvePFX68EKU/pubhtml" target="_blank">APT Groups and Operations</a>
Expand Down Expand Up @@ -195,6 +187,14 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
Free intelligence source for current and historical DNS information, WHOIS information, finding other websites associated with certain IPs, subdomain knowledge and technologies. There is a <a href="https://securitytrails.com/">IP and domain intelligence API available</a> as well.
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<td>
<a href="https://feed.ellio.tech" target="_blank">ELLIO: IP Feed (community free version)</a>
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<td>
A threat list of known malicious IP addresses anticipated to pose potential threats to your network in the near future, known benign scanners, and IP addresses of actors with unknown intent. It is provided with a 24-hour delay for personal, non-commercial use but still provides exceptional protection compared to other open IP threat lists/feeds.
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<a href="http://rules.emergingthreats.net/fwrules/" target="_blank">Emerging Threats Firewall Rules</a>
Expand Down Expand Up @@ -267,6 +267,14 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
GreyNoise collects and analyzes data on Internet-wide scanning activity. It collects data on benign scanners such as Shodan.io, as well as malicious actors like SSH and telnet worms.
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<a href="http://griffinguard.io/" target="_blank">GriffinGuard</a>
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<td>
GriffinGuard is a cybersecurity platform delivering real-time threat intelligence by continuously analyzing global internet traffic and exploitation patterns. It provides free data search, and some free IP blocklists.
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<a href="https://honeydb.io/" target="_blank">HoneyDB</a>
Expand Down Expand Up @@ -307,6 +315,14 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
I-Blocklist maintains several types of lists containing IP addresses belonging to various categories. Some of these main categories include countries, ISPs and organizations. Other lists include web attacks, TOR, spyware and proxies. Many are free to use, and available in various formats.
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<td>
<a href="https://ipasis.com" target="_blank">IPASIS</a>
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<td>
IPASIS is a real-time bot detection and fraud prevention API that combines IP intelligence, proxy/VPN/Tor detection, and email validation into a single API call. Each request returns an Interaction Trust Score (0-100) with sub-20ms response time. Free tier includes 1,000 requests/day. <a href="https://ipasis.com/docs" target="_blank">API documentation</a> and a <a href="https://ipasis.com/scan" target="_blank">live scanner</a> are available.
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<a href="https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt" target="_blank">IPsum</a>
Expand Down Expand Up @@ -419,13 +435,6 @@ The primary goal of Malpedia is to provide a resource for rapid identification a
MetaDefender Cloud Threat Intelligence Feeds contains top new malware hash signatures, including MD5, SHA1, and SHA256. These new malicious hashes have been spotted by MetaDefender Cloud within the last 24 hours. The feeds are updated daily with newly detected and reported malware to provide actionable and timely threat intelligence.
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<td><a href="https://blog.netlab.360.com/tag/english/">Netlab OpenData Project</a>
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The Netlab OpenData project was presented to the public first at ISC' 2016 on August 16, 2016. We currently provide multiple data feeds, including DGA, EK, MalCon, Mirai C2, Mirai-Scanner, Hajime-Scanner and DRDoS Reflector.
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<a href="http://www.nothink.org">NoThink!</a>
Expand Down Expand Up @@ -488,6 +497,14 @@ The primary goal of Malpedia is to provide a resource for rapid identification a
PickupSTIX is a feed of free, open-source, and non-commercialized cyber threat intelligence. Currently, PickupSTIX uses three public feeds and distributes about 100 new pieces of intelligence each day. PickupSTIX translates the various feeds into STIX, which can communicate with any TAXII server. The data is free to use and is a great way to begin using cyber threat intelligence.
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<a href="https://qfeeds.com" target="_blank">Q-Feeds Threat Intelligence</a>
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<td>
Q-Feeds is a cybersecurity company that brings together data from OSINT, proprietary research, and commercial threat intelligence feeds to offer a well-rounded and highly actionable solution. Their Threat Intelligence Portal (TIP) makes it easy for organizations to access and manage this data in real-time. By integrating with firewalls, SIEMs, and other security platforms, Q-Feeds helps businesses proactively block connections to known malicious IPs, domains, and URLs—before threats can do harm. They also have a community version available on request.
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<a href="https://rescure.fruxlabs.com/" target="_blank">REScure Threat Intel Feed</a>
Expand Down Expand Up @@ -674,6 +691,14 @@ The primary goal of Malpedia is to provide a resource for rapid identification a
VirusShare.com is a repository of malware samples to provide security researchers, incident responders, forensic analysts, and the morbidly curious access to samples of malicious code. Access to the site is granted via invitation only.
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<a href="https://vuldb.com/?actor" target="_blank">VulDB CTI</a>
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VulDB is a vulnerability database which associates actor activities and attack details with vulnerabilities. The predictive approach helps to determine emerging research and attack activities by malicious actors.
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<a href="https://github.com/Yara-Rules/rules" target="_blank">Yara-Rules</a>
Expand All @@ -690,6 +715,14 @@ The primary goal of Malpedia is to provide a resource for rapid identification a
Mrlooquer has created the first threat feed focused on systems with dual stack. Since IPv6 protocol has begun to be part of malware and fraud communications, It is necessary to detect and mitigate the threats in both protocols (IPv4 and IPv6).
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<a href="https://app.validin.com/">Validin DNS Database</a>
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Free intelligence source for current and historical DNS information, finding other websites associated with certain IPs, and subdomain knowledge There is a <a href="https://app.validin.com/docs">free API for IP and domain intelligence</a> as well.
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</table>

## Formats
Expand Down Expand Up @@ -937,6 +970,14 @@ Frameworks, platforms and services for collecting, analyzing, creating and shari
n6 (Network Security Incident eXchange) is a system to collect, manage and distribute security information on a large scale. Distribution is realized through a simple REST API and a web interface that authorized users can use to receive various types of data, in particular information on threats and incidents in their networks. It is developed by <a href="https://www.cert.pl/en/" target="_blank">CERT Polska</a>.
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<a href="https://ocsf.io/" target="_blank">Open Cybersecurity Schema Framework (OCSF)</a>
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<td>
The Open Cybersecurity Schema Framework is an open-source project, delivering an extensible framework for developing schemas, along with a vendor-agnostic core security schema. Vendors and other data producers can adopt and extend the schema for their specific domains. Data engineers can map differing schemas to help security teams simplify data ingestion and normalization, so that data scientists and analysts can work with a common language for threat detection and investigation. The goal is to provide an open standard, adopted in any environment, application, or solution, while complementing existing security standards and processes.
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<a href="https://www.opencti.io/en/" target="_blank">OpenCTI</a>
Expand Down Expand Up @@ -1227,26 +1268,34 @@ All kinds of tools for parsing, creating and editing Threat Intelligence. Mostly
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<td>
<a href="https://cybergordon.com/" target="_blank">CyberGordon</a>
<a href="https://cti-transmute.org/" target="_blank">CTI-Transmute</a>
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CyberGordon is a threat intelligence search engine. It leverages 30+ sources.
CTI-Transmute is a tool for converting Cyber Threat Intelligence (CTI) data between MISP and STIX formats. It provides a set of API endpoints that allow automated conversion of data, making it easier to integrate different threat intelligence platforms and workflows. Source available on <a href="https://github.com/MISP/cti-transmute" target="_blank">GitHub</a>.
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<td>
<a href="https://github.com/CylanceSPEAR/CyBot" target="_blank">CyBot</a>
<a href="https://github.com/cuckoosandbox/cuckoo" target="_blank">Cuckoo Sandbox</a>
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<td>
CyBot is a threat intelligence chat bot. It can perform several types of lookups offered by custom modules.
Cuckoo Sandbox is an automated dynamic malware analysis system. It's the most well-known open source malware analysis sandbox around and is frequently deployed by researchers, CERT/SOC teams, and threat intelligence teams all around the globe. For many organizations Cuckoo Sandbox provides a first insight into potential malware samples.
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<a href="https://github.com/cuckoosandbox/cuckoo" target="_blank">Cuckoo Sandbox</a>
<a href="https://cybergordon.com/" target="_blank">CyberGordon</a>
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<td>
Cuckoo Sandbox is an automated dynamic malware analysis system. It's the most well-known open source malware analysis sandbox around and is frequently deployed by researchers, CERT/SOC teams, and threat intelligence teams all around the globe. For many organizations Cuckoo Sandbox provides a first insight into potential malware samples.
CyberGordon is a threat intelligence search engine. It leverages 30+ sources.
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<a href="https://github.com/CylanceSPEAR/CyBot" target="_blank">CyBot</a>
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CyBot is a threat intelligence chat bot. It can perform several types of lookups offered by custom modules.
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