20 Free Cybersecurity Tools You Should Know

The cybersecurityCybersecurity solutions are essential in the era of … open source offers effective and accessible solutions to protect individuals, organizations, and critical infrastructures.

In an increasingly digitalized world, free cybersecurity tools have become essential resources to face ever-evolving threats. These solutions, developed collaboratively and transparently, allow users of all levels to reinforce their security without resorting to expensive proprietary applications. Below is a curated list of 20 free tools that every cybersecurity professional should consider.

Authentication and Security Assessment Tools

1. Authelia
   An open-source authentication and authorization server that offers two-factor authentication (2FA) and single sign-on (SSO) through a web portal. Ideal for integrating with reverse proxies and managing access centrally.
2. BLint
   Designed to evaluate the security properties of executables, BLint can also generate Software Bill of Materials (SBOM) for compliant software, facilitating risk management for dependencies.

Cloud Protection and Activity Monitoring

3. Cloud Active Defense
   An open-source solution that incorporates decoys in cloud infrastructures, complicating attackers’ operations by forcing them to expose themselves or reducing their effectiveness.
4. Cloud Console Cartographer
   A tool for simplifying log analysis, turning noisy activities into concise events that enable security teams to detect anomalous behavior.

Training and Vulnerability Analysis

5. Damn Vulnerable RESTaurant
   Designed for developers, this APIAn API, short for “Application Programming Interface,”… is an interactive platform that allows users to learn to identify and fix vulnerabilities in code through attack simulations.
6. Drozer
   A security assessment framework for Android that facilitates mobile app testing, helping analysts identify and mitigate risks efficiently.

Key Management, Encryption, and Log Analysis

7. EJBCA
   A comprehensive public key infrastructure (PKI) and certificate authority (CA) solution, perfect for securely managing digital certificates.
8. Encrypted Notepad
   A text editor with AES-256 encryption, ad-free and offline. It ensures file security with a minimalist interface.
9. Fail2Ban
   Monitors log files to block IP addresses after multiple failed login attempts, strengthening protection against brute-force attacks.
10. Graylog
    A solution for centralized log management. It allows for the collection, storage, and analysis of data to quickly respond to security incidents.

Visualization Platforms and Network Tools

11. Grafana
    A data visualization platform that facilitates real-time monitoring and analysis of metrics, traces, and logs.
12. Pktstat
    A tool for monitoring traffic on Ethernet interfaces, ideal for diagnosing issues in local networks.

Automation, Artificial Intelligence, and Ransomware Protection

13. Mantis
    An automated framework for asset discovery and reconnaissance analysis. Perfect for identifying subdomains and certificates associated with a primary domain.
14. Prompt Fuzzer
    Designed for generative artificial intelligence applications, it assesses their resilience against dynamic LLM-based threats.
15. RansomLord
    Automatically generates PE files to analyze how ransomware acts before encrypting data.

Risk Assessment and Software Supply Chains

16. OWASP dep-scan
    Audits security risks and licenses in software dependencies, easily integrating into continuous integration (CI) environments.
17. Protobom
    Generates and translates SBOMs to facilitate management of software supply chains in organizations of any size.

Simulation Platforms and Incident Response

18. LSA Whisperer
    A set of tools that interact with authentication packets, providing support for AzureAD and protocols like Kerberos.
19. reNgine
    An automated reconnaissance framework for web applications, optimizing scanning processes with customizable configurations.
20. Tracecat
    An incident response automation platform designed for small or resource-limited teams, making cybersecurity more accessible.

Conclusion

The availability of these free cybersecurity tools demonstrates how open-source solutions are revolutionizing digital protection. From key management to response automation, these tools offer accessible and effective alternatives to confront growing threats in cyberspace.