Recently, two of my coworkers coincidentally asked me how I kept track of security news and vulnerabilities. As it took me a long time to build a list of useful resources myself, I figured it would be useful to share it with everyone, so here goes!
A database of known attack patterns against networks.
Common Attack Pattern Enumeration and Classification (CAPEC)
A database of known attack patterns against applications.
Common Vulnerabilities and Exposures (CVE)
A database of publicly disclosed cybersecurity vulnerabilities and exposures in released software and hardware, and whether a fix or workaround exists if applicable.
Common Weakness Enumeration (CWE)
A database of software weaknesses types and how to prevent them.
A database of code snippets and research papers of successful attacks.
Have I Been Pwned?
A database of publicly leaked credentials. Can be used to search incidents by email addresses of victims, or to search the number of times a specific password has been leaked.
A service is also available for email address and domain name owners to notify them of newly-discovered breaches in which they appear in.
Server Information Lookup
A search engine for publicly-accessible services in the Internet.
A tool that provides geolocation and network intelligence information for a given IP address.
A search engine for Internet of Things (IoT) devices, e.g., security cameras, fridges and boats.
A map of publicly discovered Wi-Fi wireless networks.
Your home wireless network is probably already on it.
A mainstream technology news website offering a security news feed.
A Certificate Transparency (CT) search engine that can generate news feeds of certificates generated for a specific domain name. Useful to detect rogue certificates issued by trusted certificate autorities (CA).
A news feed of cybersecurity alerts issued by the United States of America's Department of Homeland Security.
Vulnerability Notes Database
A publication of advisory and mitigation notes of software vulnerabilities.
An HTTP proxy server that can sniff and manipulate requests and responses going through it. Can also decrypt HTTPS traffic if its certificate is set up to be trusted on the client.
A distribution of various security tools for Windows virtual machines.
An open source suite of reverse engineering tools maintained by the National Security Agency (NSA).
A Linux distribution specifically designed for penetration testing, with various built-in tools for such a task.
A collection of online tools for assessing the security of a given website.
A network sniffer and analyzer, supporting hundreds of different protocols.
Cross-Site Scripting (XSS) Cheat Sheet
A list of useful code snippets to test potential XSS vulnerabilities.
Domain-based Message Authentication, Reporting, and Conformance (DMARC)
A standard that protects domain names from being used in email forgeries.
Note that if you find this document too technical, you may be interested in my Configuring and Managing SPF, DKIM, and DMARC course on this very topic.
Open Web Application Security Project (OWASP)
A wiki of vulnerabilities and attacks on the web. Mostly known for its regular Top 10 publication of most critical web application security risks.
SQL Injection Cheat Sheet
A list of useful code snippets to test potential SQL injection vulnerabilities.
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