Comptia Security+ Acronyms
AAA ANS: Authentication, Authorization, Accounting
ACL ANS: Access Control List
AES ANS: Advanced Encryption Standard
AES-256 ANS: Advanced Encryption Standards 256 bit
AH ANS: Authentication Header. An authentication header is a security mechanism, typically used in
HTTP requests, that carries credentials to authenticate a user agent with a server. It helps servers verify
the identity of users or applications requesting access to protected resources. This header can contain
various forms of credentials, such as access tokens, API keys, or basic authentication information
AI ANS: Artificial Intelligence
AIS ANS: Automated Indicator Sharing (AIS) is a service the Cybersecurity and Infrastructure Security
Agency (CISA) provides to enable real-time exchange of machine-readable cyber threat indicators and
defensive measures between public and private-sector organizations.
ALE ANS: Annualized Loss Expectancy. SLE x ARO
AP ANS: Access Point
API ANS: Application Programming Interface
APT ANS: Advanced Persistent Threat. a sophisticated, sustained cyberattack in which an intruder
establishes an undetected presence in a network to steal sensitive data over a prolonged period
,ARO ANS: Annualized Rate of Occurrence. Frequency a risk event is expected to happen within a year
ARP ANS: Address Resolution Protocol. a network protocol that maps IP addresses to MAC addresses
within a local area network
ASLR ANS: Address Space Layout Randomization
ATT&CK ANS: Adversarial Tactics, Techniques, and Common Knowledge. a knowledge base that
categorizes how attackers operate
AUP ANS: Acceptable Use Policy
AV ANS: Antivirus
BASH ANS: Bourne Again Shell
BCP ANS: Business Continuity Planning
BGP ANS: Border Gateway Policy
BIA ANS: Business Impact Analysis
BIOS ANS: Basic Input/Output System
BPA ANS: Business Partners Agreement
, BPDU ANS: Bridge Protocol Data Unit
BYOD ANS: Bring Your Own Device
CA ANS: Certificate Authority
CAPTCHA ANS: Completely Automated Public Turing Test to Tell Computers and Humans Apart
CAR ANS: Corrective Action Report
CASB ANS: Cloud Access Security Broker
CBC ANS: Cipher Block Chaining
CCMP ANS: Counter Mode/CBC-Mac Protocol
CCTV ANS: Closed Circuit Television
CERT ANS: Computer Emergency Response Team
CFB ANS: Cipher Feedback
CHAP ANS: Challenge Handshake Authentication Protocol
AAA ANS: Authentication, Authorization, Accounting
ACL ANS: Access Control List
AES ANS: Advanced Encryption Standard
AES-256 ANS: Advanced Encryption Standards 256 bit
AH ANS: Authentication Header. An authentication header is a security mechanism, typically used in
HTTP requests, that carries credentials to authenticate a user agent with a server. It helps servers verify
the identity of users or applications requesting access to protected resources. This header can contain
various forms of credentials, such as access tokens, API keys, or basic authentication information
AI ANS: Artificial Intelligence
AIS ANS: Automated Indicator Sharing (AIS) is a service the Cybersecurity and Infrastructure Security
Agency (CISA) provides to enable real-time exchange of machine-readable cyber threat indicators and
defensive measures between public and private-sector organizations.
ALE ANS: Annualized Loss Expectancy. SLE x ARO
AP ANS: Access Point
API ANS: Application Programming Interface
APT ANS: Advanced Persistent Threat. a sophisticated, sustained cyberattack in which an intruder
establishes an undetected presence in a network to steal sensitive data over a prolonged period
,ARO ANS: Annualized Rate of Occurrence. Frequency a risk event is expected to happen within a year
ARP ANS: Address Resolution Protocol. a network protocol that maps IP addresses to MAC addresses
within a local area network
ASLR ANS: Address Space Layout Randomization
ATT&CK ANS: Adversarial Tactics, Techniques, and Common Knowledge. a knowledge base that
categorizes how attackers operate
AUP ANS: Acceptable Use Policy
AV ANS: Antivirus
BASH ANS: Bourne Again Shell
BCP ANS: Business Continuity Planning
BGP ANS: Border Gateway Policy
BIA ANS: Business Impact Analysis
BIOS ANS: Basic Input/Output System
BPA ANS: Business Partners Agreement
, BPDU ANS: Bridge Protocol Data Unit
BYOD ANS: Bring Your Own Device
CA ANS: Certificate Authority
CAPTCHA ANS: Completely Automated Public Turing Test to Tell Computers and Humans Apart
CAR ANS: Corrective Action Report
CASB ANS: Cloud Access Security Broker
CBC ANS: Cipher Block Chaining
CCMP ANS: Counter Mode/CBC-Mac Protocol
CCTV ANS: Closed Circuit Television
CERT ANS: Computer Emergency Response Team
CFB ANS: Cipher Feedback
CHAP ANS: Challenge Handshake Authentication Protocol
