List Of Security-Focused Operating Systems

This is a list of operating systems specifically focused on security. Similar concepts include security-evaluated operating systems that have achieved certification from an auditing organization, and trusted operating systems that provide sufficient support for multilevel security and evidence of correctness to meet a particular set of requirements.

• GrapheneOS is a Security-focused, Android-based mobile OS that uses a hardened kernel, C library, custom memory allocator (hardened_malloc), and custom privacy and security focused Chromium based browser named Vanadium^[1]. it also offers privacy/security features, such as Duress PIN/Password or disabling the USB-C port at a driver/hardware level to avoid exploitation. it enables multiple exploit mitigations such as memory tagging, secure app spawning, restricted dynamic code loading, and more.^[2]

• Linux Kodachi is a security-focused operating system.^[3]
• Tails is aimed at preserving privacy and anonymity.^[4]
• KickSecure is a security-focused Linux distribution that aims to be "hardened by default". It uses network hardening, kernel hardening, Strong Linux User Account Isolation, better randomness, root access restrictions, and app-specific hardening.^[5]
  • Whonix is an anonymity focused operating system based on KickSecure. It consists of two virtual machines, And all communications are routed through Tor.^[6][7][8]

• Alpine Linux is designed to be small, simple, and secure.^[9] It uses musl, BusyBox, and OpenRC instead of the more commonly used glibc, GNU Core Utilities, and systemd.^[10]
• Owl - Openwall GNU/Linux, a security-enhanced Linux distribution for servers.
• Secureblue, a Fedora Silverblue based distro that uses a hardened kernel, custom memory allocator (hardened_malloc), Trivalent, a security-focused, Chromium-based browser inspired by Vanadium, and many other exploit mitigations.^[11]

• OpenBSD is a Unix-like operating system that emphasizes portability, standardization, correctness, proactive security, and integrated cryptography.^[12]

• Qubes OS aims to provide security through isolation.^[13] Isolation is provided through the use of virtualization technology. This allows the segmentation of applications into secure virtual machines.

• Computer security
• Comparison of operating systems
• Comparison of mobile operating systems
• Security engineering

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Information security
Related security categories
Internet security Automotive security Cyberwarfare Computer security Mobile security Network security
Threats
Advanced persistent threat Computer crime Vulnerabilities Eavesdropping Malware Spyware Ransomware Trojans Viruses Worms Rootkits Bootkits Keyloggers Screen scrapers Exploits Backdoors Logic bombs Payloads Denial of service Web shells Web application security Phishing
Defenses
Computer access control Application security Antivirus software Secure coding Secure by default Secure by design Secure operating systems Authentication Multi-factor authentication Authorization Data-centric security Encryption Firewall Intrusion detection system Mobile secure gateway Runtime application self-protection (RASP)
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