Acronym Security+ Flashcards

(347 cards)

1
Q

XSS

A

Cross-site Scripting

*Occurs when an attacker embeds malicious scripting commands on a trusted website
*Stored / Persistent = attempts to get data provided by the attacker to be saved on the webserver (so that anyone who visits will be infected)
*Reflected = Attempts to have a non-persistent effective, it’s activated by a victim clicking on a link
*DOM - based = AAtemptse to xeloit the vvictim’sweb browswer

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2
Q

XSRF

A

Cross-site Request Forgery

*aka one click attack or session-riding
*Takes advantage of the trust that a web browser and web site have with each other

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3
Q

XOR

A

Exclusive OR

*Compares two input bits and generates one output bit
*if bits are the same, result = 0,
*if bits are different result = 1
*A way to make data less readable, it’s a cipher

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4
Q

XML

A

Extensible Markup Language

*Markup language similar to HTML, but without predefined tags to use
*Instead you define your own tags for your needs
*Powerful way to store data in a format that can be stored, searched, and shared
*Stores and transfers data (Whereas HTML displays data and describes the structure of a webpage), standard language which can define other computer languages

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5
Q

XDR

A

Extended Detection and Response

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6
Q

XaaS

A

Anything as a Service

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7
Q

WPS

A

Wi-Fi Protected Setup

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8
Q

WPA

A

Wi-Fi Protected Access

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9
Q

WORM

A

Write Once Read Many

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10
Q

WIPS

A

Wireless Intrusion Prevention System

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11
Q

WIDS

A

Wireless Intrusion Detection System

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12
Q

WEP

A

Wired Equivalent Privacy

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13
Q

WAP

A

Wireless Access Point

*It’s a bridge
*Switch configuration that’s taking traffic from the wireless network and switching it on to the Ethernet network
*Very similar to a switch as a layer 2 device on a network
*Some let you control the power to the WAP (which controls its range)
*Different than the wireless router at home

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14
Q

WAF

A

Web Application Firewall

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15
Q

VTC

A

Video Teleconferencing

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16
Q

VPN

A

Virtual Private Network

*Allows end users to create a tunnel over an untrusted network and connect remotely and securely back into the enterprise network
*Client to Site VPN or Remote Access VPN
*VPN Concentrator = Specialized hardware device that allows for hundreds of simultaneous VPN connections for remote workers

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17
Q

VPC

A

Virtual Private Cloud

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18
Q

VoIP

A

Voice over IP

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19
Q

VM

A

Virtual Machine

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20
Q

VLSM

A

Variable-length Subnet Masking

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21
Q

VLAN

A

Virtual Local Area Network

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22
Q

VDI

A

Virtual Desktop Infrastructure

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23
Q

VDE

A

Virtual Desktop Environment

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24
Q

VBA

A

Visual Basic for Applications

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25
UTP
Unshielded Twisted Pair
26
UTM
Unified Threat Management
27
USB OTG
USB On-The-Go
28
USB
Universal Serial Bus
29
URL
Universal Resource Locator
30
URI
Uniform Resource Identifier
31
UPS
Uninterruptible Power Supply
32
UEM
Unified Endpoint Management
33
UEFI
Unified Extensible Firmware Interface *A type of system firmware providing support for a 64-bit CPU operation at boot, full GUI and mouse operation at boot and better boot security
34
UEBA
User and Entity Behavior Analytics
35
UDP
User Datagram Protocol
36
UAT
User Acceptance Testing
37
TTP
Tactics, Techniques, and Procedures
38
TSIG
Transaction Signature
39
TPM
Trusted Platform Module *A specification for hardware based storage of digital certificates, keys, hashed passwords, and other user and platform identification information *A TPM can be managed in Windows via the tpm.msc console or group policy
40
TOTP
Time-based One Time Password *A password is computed from a shared secret and current time
41
TLS
Transport Layer Security *Cryptographic protocol to encrypt online communications. *Uses certificates and asymmetrical cryptography to authenticate hosts and exchange security keys *Better option than SSL which functions similarly
42
TKIP
Temporal Key Integrity Protocol
43
TGT
Ticket Granting Ticket
44
TCP/IP
Transmission Control Protocol/Internet Protocol
45
TAXII
Trusted Automated eXchange of Intelligence Information *The trusted transportation to securely exchange STIX information
46
TACACS+
Terminal Access Controller Access Control System *Cisco's proprietary version of RADIUS *Port 49 (TCP) *Encrypts the entire payload of the access-request packet *Primarily used for device administration *Separates authentication and authorization *part of 802.1x (along with RADIUS)
47
SWG
Secure Web Gateway
48
STP
Shielded Twisted Pair
49
STIX
Structured Threat Information eXpression *Standardized format for threats *Includes motivations, abilities, capabilities and response information Part of AIS
50
SSO
Single Sign-on *A default user profile for each user is created and linked with all of the resources needed *Compromised SSO credentials are a big security breach
51
SSL
Secure Sockets Layer
52
SSID
Service Set Identifier
53
SSH
Secure Shell
54
SSD
Solid State Drive
55
SRTP
Secure Real-time Transport Protocol
56
SQLi
SQL Injection
57
SQL
Structured Query Language
58
SPIM
Spam over Instant Messaging
59
SPF
Sender Policy Framework
60
SOC
Security Operations Center
61
SoC
System on Chip *A processor that integrates the platform functionality of multiple logical controllers onto a single chip *They are power efficient and used with embedded systems (IoT)
62
SOAR
Security Orchestration, Automation, Response
63
SOAP
Simple Object Access Protocol
64
SNMP
Simple Network Management Protocol
65
SMTPS
Simple Mail Transfer Protocol Secure
66
SMTP
Simple Mail Transfer Protocol
67
SMS
Short Message Service
68
S/MIME
Secure/Multipurpose Internet Mail Extensions
69
SMB
Server Message Block
70
SLE
Single Loss Expectancy *Describes how much money we will lose if a single event occurs *ARO X SLE = ALE
71
SLA
Service-level Agreement *Agreement between a service provider and users defining the nature, availability, quality and scope of the service to be provided *Specifies performance requirements for a vendor (and penalties)
72
SIP
Session Initiation Protocol *Protocol used for managing real-time sessions that include voice, video, application sharing or IM services
73
SIM
Subscriber Identity Module
74
SIEM
Security Information and Event Management
75
SHA
Secure Hashing Algorithm
76
SFTP
SSH File Transfer Protocol
77
SEH
Structured Exception Handling *Provides control over what the application should do when faced with a runtime or syntax error
78
SED
Self-Encrypting Drives *Can provide whole disk encryption *The controller can automatically encrypt data that is written to it on the disk drive
79
SDV
Software-defined Visibility
80
SDP
Service Delivery Platform
81
SDN
Software-defined Networking
82
SDLM
Software Development Life-cycle Methodology
83
SDLC
Software Development Life Cycle
84
SDK
Software Development Kit
85
SCEP
Simple Certificate Enrollment Protocol
86
SCAP
Security Content Automation Protocol
87
SCADA
Supervisory Control and Data Acquisition *A type of industrial control system that manages large-scale, multiple-site devices and equipment spread over geographical region *Typically run as software on ordinary computers to gather data from and manage plant devices and equipment with embedded PLCs (Programmable Logic Controller - a type of computer designed for deployment in an industrial / outdoor setting that can automate and monitor mechanical systems)
88
SAML
Security Assertions Markup Language
89
SAE
Simultaneous Authentication of Equals
90
SaaS
Software as a Service
91
S/MIME
Secure/Multipurpose Internet Mail Extensions
92
RTP
Real-time Transport Protocol
93
RTOS
Real-time Operating System
94
RTO
Recovery Time Objective *Maximum tolerable period of time required for restoring business functions after a failure or disaster
95
RTBH
Remotely Triggered Black Hole
96
RSA
Rivest, Shamir, & Adleman
97
RPO
Recovery Point Objective *maximum tolerable point in time to which systems and data must be recovered after an outage
98
ROI
Return on Investment
99
RIPEMD
RACE Integrity Primitives | Evaluation Message Digest
100
RFID
Radio Frequency Identification
101
RFC
Request for Comments
102
RCS
Rich Communication Services *a technology designated as a successor to SMS and MMS
103
RC4
Rivest Cipher version 4 *A legacy symmetric encryption algorithm *Rivest Cipher 4 (Ron Rivest) *Part of the original WEP standard (no longer in use in today's wireless) *Also part of the SSL Standard (But when TLS replaced SSL, RC4 was also replaced) *One problem: Biased output Uncommon today
104
RAT
Remote Access Server
105
RAS
Remote Access Server
106
RAM
Random Access Memory
107
RAID
Redundant Array of Inexpensive Disks
108
RADIUS
Remote Authentication Dial-in User Service *Provides centralized administration of dial-up, VPN, and wireless authentication services for 802.1x and the Extensible Authentication Protocol (EAP) *Operates at the application layer *Authentication = Port 1812 or 1645 *Authorization = Port 1813 or 1646 Standard ports vs proprietary
109
RAD
Rapid Application Development
110
RA
Registration Authority
111
QoS
Quality of Service
112
QA
Quality Assurance
113
PUP
Potentially Unwanted Program
114
PTZ
Pan-Tilt-Zoom
115
PSK
Pre-shared Key
116
PPTP
Point-to-Point Tunneling Protocol
117
PPP
Point-to-Point Protocol
118
POTS
Plain Old Telephone Service
119
POP
Post Office Protocol
120
PoC
Proof of Concept
121
PKI
Public Key Infrastructure
122
PKCS
Public Key Cryptography Standards
123
PIV
Personal Identity Verification
124
PIN
Personal Identification Number
125
PII
Personally Identifiable Information
126
PHI
Personal Health Information
127
PGP
Pretty Good Privacy
128
PFS
Perfect Forward Secrecy
129
PEM
Privacy Enhanced Mail
130
PED
Protected Extensible Authentication Protocol
131
PEAP
Protected Extensible Authentication Protocol
132
PE
Portable Executable
133
PDU
Power Distribution Unit
134
PCI DSS
Payment Card Industry Data Security Standard
135
PCAP
Packet Capture
136
PBX
Private Branch Exchange
137
PBKDF2
Password-based Key Derivation Function 2
138
PAT
Port Address Translation *Router keeps track of requests from internal hosts by assigning them random high number ports for each request
139
PAP
Password Authentication Protocol *Used to provide authentication but is not considered secure since it transmits login credentials in the clear
140
PAM
Pluggable Authentication Modules
141
PAM
Privileged Access Management
142
PAC
Proxy Auto Configuration
143
PaaS
Platform as a Service
144
P2P
Peer-to-Peer
145
P12
PKCS #12
146
OWASP
Open Web Application Security Project
147
OVAL
Open Vulnerability and Assessment Language
148
OTG
On-The-Go *technology enables establishing direct communication links between two USB devices (ex: mobile phone to usb port)
149
OTA
Over-The-Air
150
OT
Operational Technology *A communications network designed to implement an industrial control system rather than data networking *Industrial Systems prioritize availability and integrity over confidentiality *(ICS, SCADA vulnerabilities)
151
OSPF
Open-source Intelligence
152
OSINT
Open-source Intelligence
153
OSI
Open Systems Interconnection
154
OS
Operating System
155
OID
Object Identifier
156
OCSP
Online Certificate Status Protocol *allows the browser to check for certificate revocation
157
NTP
Network Time Protocol *Protocol used to synchronize computer clock times in a network. *One of the oldest parts of the TCP/IP protocol suite *ensures the reliability of the Kerberos authentication process
158
NTLM
New Technology LAN Manager
159
NTFS
New Technology File System
160
NOC
Network Operations Center
161
NIST
National Institute of Standards & Technology *CSF = NIST's voluntary framework outlining best practices for computer security
162
NIPS
Network-based Intrusion Prevention System
163
NIDS
Network-based Intrusion Detection System
164
NIC
Network Interface Card
165
NG-SWG
Next-generation Secure Web Gateway
166
NGFW
Next-generation Firewall
167
NFV
Network Function Virtualization
168
NFC
Near-field Communication
169
NDA
Non-disclosure Agreement
170
NAT
Network Address Translation *Process of changing an IP address while it transits across a router *NAT can help hide network IPs
171
NAS
Network-attached Storage A storage appliance that is placed on the network. *Specially designed to store data more efficiently than standard data methods *(Note a SAN often includes many NAS. A SAN = storage area network, which is a an actual network of devices that have the sole purpose of storing data efficiently)
172
NAC
Network Access Control * Method of controlling who or what gains access to a wired or wireless network * Most cases NAC uses a combination of 802.1x security and some form of posture assessment for a device attempting to log into the network (a posture assessment considers the state of the requesting device (the device must meet a minimum set of standards before it is allowed access to the network. Ex: type of device, OS, patch level, presence of anti malware and is software up to date)
173
MTU
Maximum Transmission Unit
174
MTTR
Mean Time to Repair
175
MTTF
Mean Time to Failure
176
MTBF
Mean Time Between Failures
177
MSSP
Managed Security Service Provider *Provides outsourced monitoring and management of security devices and systems. *Common services: managed firewall, IDS, VPN, vulnerability scanning and anti viral services. *use high availability security operation centers to provide 24/7 services designed to reduce the number of operational security personnel an enterprise needs
178
MSP
Managed Service Provider *Delivers services (like network, application, infrastructure and security) via ongoing and regular support and active administration on customers premise.
179
MS-CHAP
Microsoft Challenge-Handshake
180
MSA
Measurement Systems Analysis *provides a way for a company to evaluate and assess the quality of the process used in their measurement systems. *ex six sigma *will assess the measurement itself and then be able to calculate any uncertainty that may be in place during the measurement process *Specifies generic terms to simplify negotiation of future contracts
181
MPLS
Multiprotocol Label Switching
182
MOU
Memorandum of Understanding
183
MOA
Memorandum of Agreement
184
MMS
Multimedia Message Service
185
ML
Machine Learning
186
MFP
Multifunction Printer
187
MFD
Multifunction Device
188
MFA
Multifactor Authentication
189
MDM
Mobile Device Management
190
MDF
Main Distribution Frame
191
MD5
Message Digest 5
192
MBR
Master Boot Record
193
MAN
Metropolitan Area Network
194
MAM
Mobile Application Management
195
MAC
Media Access Control *Address of a network card, the physical address (every adaptor has a different MAC address) *46 bits long (6 bytes) *1st section, is the OUI (manufacturer portion) 2nd section is the Serial Number *Switches interpret the MAC addresses *MAC flooding turns switch into a hub *One issue with MAC filtering, easy to circumvent, you just need a packet capturing device to see which MAC addresses are allowed to communicate and then simply spoof that address (MAC filtering attempts security through obscurity but is really not effective at all)
196
MaaS
Monitoring as a Service
197
LEAP
Lightweight Extensible Authentication Protocol *proprietary to Cisco based networks
198
LDAP
Lightweight Directory Access Protocol *A databased used to centralize information about clients and objects on the network *Port 389 Unecrypted *Port 636 encrypted *(Active Directory is Microsoft's version)
199
LAN
Local Area Network
200
L2TP
Layer 2 Tunneling Protocol
201
KEK
Key Encryption Key
202
KDC
Key Distribution Center
203
IV
Initialization Vector
204
ITCP
IT Contingency Plan
205
ISSO
Information Systems Security Officer
206
ISP
Internet Service Provider
207
ISO
International Standards Organization
208
ISFW
Internal Segmentation Firewall
209
ISA
Interconnection Security Agreement *Document that regulates security-relevant aspects of an intended connection between an agency and an external system. *Supports / usually proceeded by a MOU / MOA
210
IRP
Incident Response Plan
211
IRC
Internet Relay Chat
212
IR
Incident Response
213
IPsec
Internet Protocol Security
214
IPS
Intrusion Prevention System
215
IP
Internet Protocol *IPv4 32-bit addressing scheme that provides over 4B possible unique addresses *commonly represented in dotted decimal format *3 ways of transmitting data through networks: unicast, multicast (1 to few), broadcast (1 to many) *IPv6 128 bit that provides over 340 undecillion possible unique addresses (eventually this will over take IPv4 as IPv4 is currently running out.) *Commonly represented in comma separated hexadecimal *Unicast, multicast and anycast (to replace broadcast)
216
IoT
Internet of Things
217
IoC
Indicators of Compromise *A specific activity that could indicate that someone is now inside your network *Ex: Increase traffic, could be normal or could indicate data exfiltration *Ex: files that should have constant hash values, are now different (hacker is modifying trusted documents)
218
IMAP4
Internet Message Access Protocol v4
219
IM
Instant Messaging
220
IKE
Internet Key Exchange
221
IEEE
Institute of Electrical and Electronics Engineers
222
IDS
Intrusion Detection System
223
IdP
Identity Provider *a trusted third-party service for validating user identity in a federated identity system
224
IDF
Intermediate Distribution Frame
225
IDEA
International Data Encryption Algorithm
226
ICS
Industrial Control Systems *A network that manages embedded devices *Used for electrical power stations, water suppliers, health services, telecommunications, manufacturing and defense needs
227
ICMP
Internet Control Message Protocol
228
IAM
Identity and Access Management
229
IaaS
Infrastructure as a Service
230
HVAC
Heating, Ventilation, Air-conditioning
231
HTTPS
Hyper Text Transfer Protocol Secure
232
HTTP
Hyper Text Transfer Protocol
233
HTML
Hypertext Markup Language
234
HSMaaS
Hardware Security Module as a Service
235
HSM
Hardware Security Module *An appliance for generating and storing cryptographic keys that is less susceptible to tampering and insider threats than software based storage
236
HOTP
HMAC based One-time Password *A password is computed from a shared secret and is synchronized between the client and server *This was the original standard *Uses a counter, that increments with each new validation *It's still used but companies like Google use TOTP
237
HMAC
Hash-based Message Authentication Code
238
HIPS
Host-based Intrusion Prevention System
239
HIDS
Host-based Intrusion Detection System
240
HDD
Hard Disk Drive
241
HA
High Availability
242
GRE
Generic Routing Encapsulation
243
GPU
Graphics Processing Unit
244
GPS
Global Positioning System
245
GPO
Group Policy Object
246
GPG
GNU Privacy Guard
247
GDPR
General Data Protection Regulation
248
GCM
Galois/Counter Mode
249
ESN
Electronic Serial Number
250
FTPS
File Transport Protocol Secure
251
FTP
File Transfer Protocol
252
FRR
False Rejection Rate
253
FPGA
Field Programmable Gate Array *A processor that can be programmed to perform a specific function by a customer rather than at the time of manufacture *End customer can configure the programming logic to run a specific application instead of using ASIC (application-specific integrated circuit) *(IoT) *considered an anti-tamper mechanism
254
FIM
File Integrity Monitoring
255
FDE
Full Disk Encryption
256
FACL
File-system Access Control List
257
ESSID
Extended Service Set Identifier
258
ESP
Encapsulation Security Payload *member of IPSec *encrypts and authenticated packed if data between computers using a VPN *one of two layers of protection for IP sec (other is AH) *ESP + Ah can operate in two modes transport (less secure) and tunnel (more secure)
259
ERP
Enterprise Resource Planning
260
EOS
End of Service
261
EOL
End of Life
262
EIP
Extended Instructions Pointer *tracks the address of the current instruction running in an application *holds the address to (points to) the first byte of the next instruction to be executed
263
EFS
Encrypted File System
264
EDR
Endpoint Detection and Response
265
ECDSA
Elliptic-curve Digital Signature Algorithm
266
ECDHE
Elliptic-curve Diffie-Hellman Ephemeral
267
ECC
Elliptic-curve Cryptography
268
ECB
Electronic Code Book
269
EAP
Extensible Authentication Protocol *A framework of protocols that allows for numerous methods of authentication including passwords, digital certificates and public key infrastructure *EAP-MD5 uses simple passwords for challenge-authentication *EAP-TLS uses digital certificates for mutual authentication *EAP-TTLS uses server-side digital certificate and a client-side password for mutual authentication *EAP-FAST provides flexible authentication via secure tunneling (FAST) by using a protected access credential instead of a certificate for mutual authentication *Protected EAP - supports mutal authentication by using server certificates and Active Director to authenticate a client's passcode
270
DSL
Digital Subscriber Line
271
DSA
Digital Signature Algorithm
272
DRP
Disaster Recovery Plan
273
DPO
Data Protection Officer
274
DoS
Denial of Service
275
DNSSEC
Domain Name System Security Extension
276
DNS
Domain Name System *Maps the IP addresses into a human-readable name and vice versa *Ex: IP address 1234… = professormesser.com *See also ARP and DHCP
277
DNAT
Destination Network Address Translation
278
DMARC
Domain Message Authentication Reporting and Conformance
279
DLP
Data Loss Prevention
280
DLL
Dynamic-link Library
281
DKIM
Domain Keys Identified Mail
282
DHE
Diffie-Hellman Ephemeral
283
DHCP
Dynamic Host Configuration Protocol *Network protocol that dynamically (automatically) assigns IP addresses to the computers or other devices on each LAN network *Can assign an IP address from within a given range *See also ARP and DNS *DHCP snooping = switch configured with a series of trusted interfaces that may have routers, switches and other DHCP servers on it, but it would have other interfaces that are not trusted, the switch is constantly monitoring the conversations
284
DES
Data Encryption Standard *Created by the NSA and IBM b/n 1972 -1977, used to be the most popular symmetric encryption algorithm in use *Part of FIPs *Used 64-bit block cypher (encrypted 64 bits of data at a time) *Used a 56-bit key, which is small so now it is easy to brute force. *No longer practically used today as a result
285
DER
Distinguished Encoding Rules *most popular way to store X.509 file certificates *DER encoding certificates are supported by almost all applications *Ex: OpenSSL and keytool
286
DEP
Data Execution Prevention
287
DDoS
Distributed Denial of Service
288
DBA
Database Administrator
289
DAC
Discretionary Access Control
290
CYOD
Choose Your Own Device
291
CVSS
Common Vulnerability Scoring System
292
CVE
Common Vulnerabilities and Exposures
293
CTO
Chief Technology Officer
294
CTM
Counter-Mode
295
CSU
Channel Service Unit *hardware that concerts digital data frames from LAN into frames for WAN and vice versa *received and transmits signals to and from the WAN line and provided a barrier for electrical interference from either side of the unit *can echo loop back signals for testing purposes *connects the network provider side *CSU/DSU (Data service Unit). The DSU connects to your Data Terminal Equipment (often a router)
296
CSRF
Cross-Site Request Forgery
297
CSR
Certificate Signing Request
298
CSP
Cloud Service Provider
299
CRC
Cyclic Redundancy Check
300
CP
Contingency Planning
301
COPE
Corporate-owned Personally Enabled
302
COOP
Continuity of Operations Planning
303
CN
Common Name
304
CMS
Content Management System
305
CIS
Center for Internet Security *Non profit organization focused on developing globally-recognized best practices for securing IT systems and data against cyber attacks
306
CIRT
Computer Incident Response Team
307
CIO
Chief Information Officer
308
CHAP
Challenge-Handshake Authentication Protocol *Used to provide authentication by using the user's password to encrypt a challenge string of random numbers *PAP and CHAP are mostly used with dial-up MS-CHAP = Microsoft's versions
309
CFB
Cipher Feedback
310
CERT
Computer Emergency Response Team
311
CCTV
Closed Circuit Television
312
CCMP
Counter-Mode/CBC-MAC Protocol
313
CBC
Cipher Block Chaining
314
CASB
Cloud Access Security Broker
315
CAR
Corrective Action Report
316
CAPTCHA
Completely Automated Public Turning Test to Tell Computers and Humans Apart
317
CA
Certificate Authority
318
BYOD
Bring Your Own Device
319
BSSID
Basic Service Set Identifier
320
BPDU
Bridge Protocol Data Unit *Primary protocol used by the Spanning tree protocol
321
BPA
Business Partnership Agreement
322
BIOS
Basic Input Output Systems
323
BASH
Bourne Again Shell
324
AV
Antivirus
325
BIA
Business Impact Analysis
326
BGP
Border Gateway Protocol *allows different autonomous systems on the internet to share routing information *more flexible than OSPF and can be used on larger networks *emphasis on determining the best path (OSPF, the fastest)
327
BCP
Business Continuity Plan
328
AUP
Acceptable Use Policy *Many organizations have them *Detailed documentation that covers how all of the different technologies in your environment should be used *Covers internet, telephones, computers, mobile devices *A way for employer to set expectations
329
ATT&CK
Adversarial Tactics, Techniques and Common Knowledge *MITRE framework *Identify broad categories of attacks, find exact intrusions and how they are occurring and how attackers are moving around after the attack and identify security techniques that can help you block future attacks
330
ASP
Active Server Pages
331
ASLR
Address Space Layout Randomization *Method used by programmers to randomly arrange the different address spaces used by a program or process to prevent buffer overflow exploits
332
ARP
Address Resolution Protocol *A way to translate IP address to MAC address. *Purpose is to find out the MAC address of a device on the LAN *used when IPV4 is used over ethernet *Helps resolve an address of a specific computer by sending a piece of information from the local computer to a remote computer where the server process is executed. This piece of information allows the server to identify the network system and provide the address *See also DHCP and DNS
333
ARO
Annualized Rate of Occurrence *The number of times / year something happens *ARO X SLE = ALE *can be based on historical data, how often a threat would be successful exploiting a vulnerability
334
APT
Advanced Persistent Threat
335
API
Application Programming Interface
336
AP
Access Point *Most APs allow you to configure MAC- level filtering to the AP itself
337
ALE
Annualized Loss Expectancy *ARO X SLE = ALE *The total number in dollars if an event occurs based on its frequency
338
AIS
Automated Indicator Sharing *A way to automate the process of gathering and disseminating threat information that’s secure *A way to process and move the information between organizations over the internet
339
AI
Artificial Intelligence
340
AH
Authentication Header *Can provide data integrity (Ex: in IPSec)
341
AES256
Advanced Encryption Standard 256bit *largest key size for AES (symmetric)
342
AES
Advanced Encryption Standard *Most popular SYMMETRIC encryption in use today *Standard of the US Federal Government *Added to FIPS 197 in 2001 (It took five years to standardize and eventually replace DES) *128 cipher block encryption (in a single pass) *Supports 128, 192, and 256 bit key sizes *Ex: A wireless network where all information is encrypted with WPA2 uses AES
343
AD
Active Directory *Directory servers that runs on Microsoft Windows Server *Main function is to enable administrators to manage permissions and control access to network resources
344
ACL
Access Control List *set of permissions that are then assigned to an object *Used in firewalls, switches, routers, and OS *All of them to some degree allow/restrict access to certain parts of the network or to an OS *They can be very specific (to ports) and / or very complex
345
ABAC
Attribute Based Access Control *An access control paradigm whereby access rights are granted to users through the use of policies which combine attributes together. *The policies can use any type of attributes (user attributes, resource attributes, environment attribute etc.). *Ex: Permit managers to **, provided that **, if ** or ** unless **
346
AAA
Authentication, Authorization, Accounting *Proving who you are *Deciding what you have access to *## Keeping track of who authenticated onto network
347
3DES
Triple Data Encryption Standard *Variant of DES that uses 3 different keys to perform the encryption process. (3 separate passes through the data) *Symmetrical *No longer use 3DES either *(AES is the workhorse encryption standard today)