B2 Security

Definition of B2 Security

B2 security is a security level in the context of computer systems, as defined in the now-classic Orange Book developed by the US National Computer Security Center. It refers to systems that incorporate Mandatory Access Control (MAC), ensuring that users have the appropriate security clearances and adhere to need-to-know policies. Additionally, B2 security level systems provide extensive security testing, auditing, and stronger authentication to protect sensitive information and maintain system integrity.


The phonetic pronunciation of the keyword “B2 Security” would be:”Bravo Two Sɪˈkjʊriti”

Key Takeaways

  1. B2 Security focuses on providing top-notch protection for digital assets, applications, and data against potential cyber threats and attacks.
  2. It offers a wide range of services, including vulnerability assessments, penetration testing, security audits, and incident response, to safeguard businesses from evolving security challenges.
  3. B2 Security emphasizes the need for continuous security improvement by providing customized solutions that can adapt to the ever-changing digital landscape.

Importance of B2 Security

B2 security is an important technology term because it refers to a specific level of security evaluation for computer systems, ensuring a high level of protection for sensitive or critical data.

By adhering to the B2 security criteria, which is part of the Trusted Computer System Evaluation Criteria (TCSEC), also known as the Orange Book, developers and system administrators can guarantee that their systems maintain stringent access control mechanisms, comprehensive auditing capabilities, and robust security policies.

This level of security is crucial for organizations handling classified or confidential information, as it minimizes the risks of unauthorized access, data breaches, or other security threats that can lead to significant financial and reputational damages.


B2 Security, originating from the United States Department of Defense’s (DoD) Trusted Computer System Evaluation Criteria (TCSEC), serves as a crucial and trusted security standard specifically designed for safeguarding sensitive information against potential threats. The primary purpose of B2 Security is to ensure that organizations can securely and effectively manage their classified data through the implementation of various security protocols, access controls, and auditing mechanisms.

As a result, B2 Security not only helps in maintaining confidentiality but also promotes accountability, traceability, and data integrity. These aspects are vital for industries such as defense, finance, and healthcare, where unauthorized access to critical information could have severe consequences.

One of the main components of B2 Security is the implementation of Mandatory Access Controls (MAC) which restricts the access of classified data based on security labels attached to information and user clearance levels. This ensures that an individual can access the information only if their security clearance level matches or is higher than the data’s security level.

Apart from MAC policies, B2 Security also consists of robust auditing and documentation mechanisms to provide a comprehensive record of every transaction and access attempt made within the system. In this way, B2 Security fosters a secure environment for sensitive data handling by offering an optimal balance between data protection, user accessibility, and administrative control, thus significantly reducing the risks of unauthorized access and security breaches.

Examples of B2 Security

B2 Security, also known as Biba Model, is a formal model developed by Kenneth J. Biba, focused on data integrity and confidentiality. Although not used explicitly in its original form, several real-world applications have built upon the principles of the B2 Security model. Here are three examples:

Military and Government Systems: Defense organizations and government agencies require strict control and monitoring of classified information. These organizations often use security models with principles inspired by B2 Security, ensuring that sensitive data is accessed and handled at appropriate security levels. Examples include the U.S Department of Defense’s multilevel security systems.

Financial Institutions and Banks: Financial sectors require high levels of data integrity to prevent fraud, unauthorized data manipulation, and ensure the confidentiality of sensitive customer information. These organizations often implement security policies reflecting principles from the B2 Security model, making sure that only specific users have access to modify sensitive data or execute specific transactions.

Healthcare Industry: Healthcare organizations manage sensitive patient data that requires strict levels of confidentiality and integrity. Systems such as Electronic Health Records (EHR) incorporate principles of B2 Security to ensure that patient information is only accessed and modified by authorized personnel, and unauthorized users cannot tamper with or compromise data integrity.

B2 Security FAQ

What is B2 security?

B2 security is a stringent security standard that has been designed for organizations and systems that handle sensitive and classified information. It is essential for ensuring that data is protected from unauthorized access, tampering, and destruction. Adhering to B2 security standards can help organizations maintain a high level of information security and safeguard their digital assets.

How does B2 security protect confidential information?

B2 security employs various security measures, such as data encryption, access control, intrusion detection, and auditing. These measures help in preventing unauthorized access, modification, and leakage of sensitive data. By implementing B2 security, organizations can also demonstrate their commitment to information security and build trust with their stakeholders, including customers, partners, and regulators.

What are the benefits of implementing B2 security?

Implementing B2 security provides several benefits, such as improved data protection, enhanced reputation, regulatory compliance, and reduced risk of cyber incidents. By adhering to B2 security standards, organizations can effectively safeguard their sensitive data, support business continuity, and comply with relevant laws and regulations. This can ultimately lead to increased customer trust, competitive advantage, and business growth.

Is B2 security suitable for all types of organizations and systems?

While B2 security offers robust protection for sensitive information, it may not be suitable for all types of organizations and systems. Implementing B2 security can be resource-intensive, and its stringent security requirements might not be necessary for every organization. It is essential to conduct a thorough risk assessment and evaluate the specific security needs of your organization before deciding whether B2 security is an appropriate solution for you.

How can an organization achieve B2 security compliance?

Achieving B2 security compliance involves implementing a set of security controls, policies, processes, and technologies that align with the B2 security standard. Organizations may need to consult with security experts or seek assistance from specialized security service providers to identify gaps in their existing security posture, design effective security solutions, and ensure proper implementation. Regular security audits and continuous monitoring can also help maintain B2 security compliance and ensure ongoing data protection.

Related Technology Terms

  • Access Control Model
  • Trusted Computing Base (TCB)
  • Covert Channel Analysis
  • Security Labeling
  • Reference Monitor

Sources for More Information


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