# security-focused operating system

> operating systems, that are focused on anonymous, privacy and security

**Wikidata**: [Q3496042](https://www.wikidata.org/wiki/Q3496042)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Security-focused_operating_system)  
**Source**: https://4ort.xyz/entity/security-focused-operating-system

## Summary
A security-focused operating system is a type of operating system designed to prioritize anonymity, privacy, and security. These systems are built to protect user data, resist attacks, and minimize vulnerabilities, often used in environments where security is critical.

## Key Facts
- Security-focused operating systems are a subclass of operating systems, specifically designed for enhanced privacy and security.
- Examples include OpenBSD (founded October 18, 1995), GrapheneOS (founded 2014), and Kaspersky OS (introduced in February 2015).
- OpenBSD is a widely recognized Unix-like operating system known for its security features.
- GrapheneOS is a privacy-focused mobile OS based on Android, developed in Canada.
- Kaspersky OS is a proprietary operating system developed by Kaspersky Lab.
- Other notable examples include EROS (developed since 1991), LibertyBSD, and TrustedBSD.
- These systems often include features like mandatory access control, sandboxing, and minimal attack surfaces.

## FAQs
### Q: What is the purpose of a security-focused operating system?
A: The primary purpose is to provide a secure computing environment by prioritizing privacy, anonymity, and protection against cyber threats. These systems are often used in sensitive applications where data security is critical.

### Q: What are some examples of security-focused operating systems?
A: Notable examples include OpenBSD, GrapheneOS, Kaspersky OS, and LibertyBSD. Each of these systems is designed with specific security features to protect user data and resist attacks.

### Q: How does a security-focused operating system differ from a regular operating system?
A: Unlike regular operating systems, security-focused OSes are built with additional layers of protection, such as stricter access controls, reduced attack surfaces, and enhanced encryption to prevent unauthorized access and data breaches.

### Q: When was OpenBSD first released?
A: OpenBSD was first released on October 18, 1995. It is known for its strong emphasis on security and proactive approach to vulnerability management.

### Q: What is GrapheneOS?
A: GrapheneOS is a security and privacy-focused mobile operating system based on Android. It was developed in Canada and first introduced in 2014, offering enhanced protections for mobile devices.

## Why It Matters
Security-focused operating systems play a crucial role in protecting sensitive data and ensuring privacy in an increasingly digital world. As cyber threats become more sophisticated, these systems provide a robust defense against attacks, data breaches, and unauthorized access. They are essential for individuals and organizations that handle confidential information, such as governments, financial institutions, and privacy-conscious users. By prioritizing security in their design, these operating systems help mitigate risks associated with malware, hacking, and surveillance, making them a vital tool in the fight for digital security and privacy.

## Notable For
- **OpenBSD**: One of the earliest and most influential security-focused operating systems, known for its proactive security measures and open-source development.
- **GrapheneOS**: A mobile OS that brings advanced security features to Android devices, including strong sandboxing and privacy protections.
- **Kaspersky OS**: Developed by a leading cybersecurity company, this OS is designed for industrial and embedded systems where security is paramount.
- **EROS and CapROS**: Research-oriented operating systems that explore new approaches to security through capability-based architectures.
- **LibertyBSD and TrustedBSD**: Variants of BSD operating systems that enhance security features for specific use cases.

## Body
### Overview
Security-focused operating systems are specialized versions of operating systems designed to address security and privacy concerns. They are built with features that minimize vulnerabilities, resist attacks, and protect user data. These systems are often used in environments where security is a top priority, such as military, financial, and personal privacy applications.

### Key Features
- **Mandatory Access Control (MAC)**: Enforces strict policies on what users and processes can access, reducing the risk of unauthorized actions.
- **Sandboxing**: Isolates applications to prevent them from affecting other parts of the system or accessing sensitive data.
- **Minimal Attack Surface**: Reduces the number of potential entry points for attackers by limiting unnecessary services and features.
- **Encryption**: Uses strong encryption to protect data at rest and in transit.
- **Proactive Security Measures**: Regularly updates and patches vulnerabilities to stay ahead of emerging threats.

### Notable Examples
- **OpenBSD**: Released in 1995, OpenBSD is a Unix-like operating system known for its focus on security and code correctness. It includes features like memory protection, cryptography, and a secure default configuration.
- **GrapheneOS**: A mobile operating system based on Android, GrapheneOS enhances privacy and security with features like hardened memory allocators, sandboxed applications, and strict permission controls. It was developed in Canada and first introduced in 2014.
- **Kaspersky OS**: Introduced in 2015 by Kaspersky Lab, this operating system is designed for embedded and industrial systems. It uses a microkernel architecture and mandatory access control to provide robust security.
- **LibertyBSD**: A free operating system based on OpenBSD, LibertyBSD removes non-free software components while maintaining a strong focus on security.
- **TrustedBSD**: An extension of the FreeBSD operating system that adds security features like mandatory access control and event auditing.

### Development and Research
Some security-focused operating systems, such as EROS and CapROS, are research projects exploring new security models. EROS, developed since 1991, is based on a capability-based architecture, while CapROS is an open-source continuation of this work. These systems contribute to the broader understanding of secure computing and influence the development of future operating systems.

### Applications
Security-focused operating systems are used in various contexts, including:
- **Personal Privacy**: Protecting individual users from surveillance and data breaches.
- **Enterprise Security**: Securing corporate networks and sensitive business data.
- **Government and Military**: Ensuring the confidentiality and integrity of classified information.
- **Embedded Systems**: Providing secure environments for IoT devices and industrial control systems.

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