Malc0de Database

The was a foundational Open-Source Cyber Threat Intelligence (OSCTI) repository that historically tracked, monitored, and blacklisted malicious IP addresses, autonomous system numbers (ASNs), domains, and MD5 file hashes. For over a decade, it served as a vital tool for Security Operations Center (SOC) analysts, network administrators, and malware researchers by providing live, daily-updated feeds of active threat indicators.

Blacklists like Malc0de are more than just lists of "bad" websites; they are essential components of a multi-layered security posture. They are frequently integrated into: Intrusion Detection Systems (IDS): To block traffic to known malicious IPs. Security Information and Event Management (SIEM):

This was arguably the most utilized component. It listed IP addresses identified as hosting malicious content.

Over time, the original Malc0de database became less active, and its original public interface was retired or integrated into broader security initiatives. However, the methodology popularized by Malc0de—providing free, automated, and structured IoC feeds—laid the groundwork for contemporary open-source threat intelligence (OSINT). Top Modern Alternatives to Malc0de malc0de database

The consistency and longevity of the malc0de database made it a popular subject for academic research. A 2020 study from the University of Twente analyzed the "agility" of public DNS blocklists (DBLs), and found that to investigate blacklist effectiveness, domain fluxing, and malware infrastructure. The same study provided a detailed statistical profile of the database between July 2016 and February 2019, noting it contained 2,249 unique domain names and averaged about 92 active entries on any given day, with small but frequent daily updates of roughly three new and three removed domains.

Tracking how fast malicious sites are removed once added to a threat list.

Use it. Support it. And always verify before you block. The was a foundational Open-Source Cyber Threat Intelligence

Founded by a security researcher known as "Kafeine" (formerly of Proofpoint), malc0de gained traction between 2010 and 2018 as a go-to resource for tracking Exploit Kits (EKs) such as Angler, Nuclear, and RIG. Today, while the landscape has shifted toward document macros and PowerShell scripts, the database continues to log live malicious payloads.

The network address hosting the malicious domain.

: The server location hosting the domain, helping teams block traffic at the firewall level. Over time, the original Malc0de database became less

The hosting servers associated with the malicious domains.

If malc0de is not sufficient for your needs, consider these complementary resources:

: Developers often integrate Malc0de feeds into automated security systems, such as the IntelMQ framework.

Network administrators downloaded Malc0de’s updated blocklists in formats like TXT, XML, or RSS feeds. Firewalls, DNS sinks, and Intrusion Prevention Systems (IPS) ingested these lists to automatically drop connection requests to known bad IPs and domains. 2. Threat Hunting and Incident Response

The was once a cornerstone of the cybersecurity community, serving as a vital open-source intelligence (OSINT) tool for tracking malware distribution networks. For over a decade, security researchers, incident responders, and network administrators relied on this repository to identify malicious domains, track IPs, and block emerging cyber threats.