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  1. Security+ (Plus) Certification | CompTIA

    Security+ validates the core skills required for a career in IT security and cybersecurity. Learn about the certification, available training and the exam.

  2. Security - Wikipedia

    Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and …

  3. Windows Security: Defender Antivirus, SmartScreen, and More ...

    Protect your privacy, identity, and devices with Windows Security. Explore Windows 11 security features like Microsoft Defender Antivirus that help keep you and your PC safe.

  4. TOP 10 BEST Security Guard Companies in Philadelphia, PA ...

    "Main Line Protection will be the first people I call for any security services that we will need in..." more

  5. SECURITY Definition & Meaning - Merriam-Webster

    The meaning of SECURITY is the quality or state of being secure. How to use security in a sentence.

  6. Allied Universal | Leading Security Services & Solutions ...

    Allied Universal® is one of the leading security companies that provides innovative security services and solutions to protect people, businesses, and communities worldwide.

  7. SECURITY | definition in the Cambridge English Dictionary

    SECURITY meaning: 1. protection of a person, building, organization, or country against threats such as crime or…. Learn more.

  8. What is Security? | Definition from TechTarget

    May 30, 2025 · Security in IT is the method of preventing, defending and mitigating cyberattacks. Learn the different types of security and the best security principles.

  9. SECURITY Definition & Meaning | Dictionary.com

    SECURITY definition: freedom from danger, risk, etc.; safety. See examples of security used in a sentence.

  10. security noun - Definition, pictures, pronunciation and usage ...

    Definition of security noun from the Oxford Advanced Learner's Dictionary. [uncountable] the activities involved in protecting a country, building or person against attack, danger, etc. They …