Security
Introduction
History/Background
Key Concepts
Types of Security
- Information Security: Protecting sensitive information from unauthorized access, use, or disclosure.
- Cybersecurity: Protecting computer systems, networks, and data from cyber-attacks and other online threats.
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Security Measures
- Access controls: Limiting access to sensitive areas or resources.
- Cryptography: Using encryption to protect data from unauthorized access.
- Firewalls: Blocking incoming and outgoing network traffic based on predetermined security rules.
- Biometric authentication: Using unique physical characteristics, such as fingerprints or facial recognition, to verify identity.
Security Threats
- Cyber-attacks: Unauthorized access to computer systems or networks.
- Data breaches: Unauthorized disclosure of sensitive information.
Technical Details
Network Security
- Firewalls: Blocking incoming and outgoing network traffic based on predetermined security rules.
- Intrusion detection and prevention systems (IDPS): Detecting and preventing unauthorized access to computer systems or networks.
- Virtual private networks (VPNs): Encrypting internet traffic between a user's device and a VPN server.
Cryptography
- Encryption algorithms: Methods for transforming plaintext into ciphertext to protect data.
- Cryptographic keys: Secret values used to encrypt and decrypt data.
- Hash functions: One-way mathematical functions that take input data of any size and produce a fixed-size output.
Data Security
- Encryption: Protecting data at rest or in transit using encryption algorithms and cryptographic keys.
- Access controls: Limiting access to sensitive areas or resources.
- Data backups: Regularly backing up critical data to ensure business continuity.
Applications/Uses
Cybersecurity
- Firewalls: Blocking incoming and outgoing network traffic based on predetermined security rules.
- Intrusion detection and prevention systems (IDPS): Detecting and preventing unauthorized access to computer systems or networks.
- Virtual private networks (VPNs): Encrypting internet traffic between a user's device and a VPN server.
- Access controls: Limiting access to sensitive areas or resources.
- Cryptography: Using encryption to protect data from unauthorized access.
- Data backups: Regularly backing up critical data to ensure business continuity.
Physical Security
- Access controls: Limiting access to sensitive areas or resources.
- CCTV cameras: Installing video surveillance systems to deter crime and investigate incidents.
- Alarm systems: Installing motion detectors, pressure pads, and other sensors to detect potential threats.
Impact/Significance
- Protection of sensitive information: Preserving confidentiality, integrity, and availability of critical data.
- Safeguarding physical assets: Protecting property, infrastructure, and people from harm or destruction.
- Prevention of cyber-attacks: Blocking unauthorized access to computer systems or networks.
Cybersecurity and Privacy
- Data protection laws: Ensuring compliance with regulations governing data handling and storage.
-li>Privacy policies: Establishing clear guidelines for collecting, using, and disclosing personal data.
Intelligence Security
- Human intelligence (HUMINT): Collecting information from human sources, such as spies or informants.
- Signals intelligence (SIGINT): Intercepting electronic communications to gather sensitive information.
References & Further Reading
References / Further Reading
Sources
The following sources were referenced in the creation of this article. Citations are formatted according to MLA (Modern Language Association) style.
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1.
"U.S. Department of Homeland Security: Security." usccb.gov, https://www.usccb.gov/security.html. Accessed 01 Jan. 2026.
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2.
"National Institute of Standards and Technology: Security." nist.gov, https://www.nist.gov/topics/security. Accessed 01 Jan. 2026.
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3.
"Cybersecurity and Infrastructure Security Agency (CISA): Security." cisa.gov, https://www.cisa.gov/security. Accessed 01 Jan. 2026.
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4.
"ISSNUPs: Security in the Enterprise." issnups.com, https://www.issnups.com/security-in-the-enterprise/. Accessed 01 Jan. 2026.
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5.
"SANS Institute: Security Terms." sans.org, https://www.sans.org/security-terms. Accessed 01 Jan. 2026.
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6.
"SecurityFocus: Vulnerability Information." securityfocus.com, https://www.securityfocus.com/vulnerability/moreinfo/2049. Accessed 01 Jan. 2026.
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