computer system security final exam

66 flashcardsby gabriele
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1
access control matrix (ACM)
method to extensively define rule details for all subjects & objects
2
polymorphic
virus that changes the code without changing the algorithm to evade static detection
3
availability
security principle that resources are accessible
4
collision
when 2 datasets generate same hash value
5
anomaly detection
IDS model for finding zero-day viruses & intruders by examining the system behavior data for suspicious activity
6
digital encryption standard (DES)
initial symmetric digital standard for encrypting blocks of data that has since been depreciated
7
substitution
cryptographic process that exchanges one pattern for another
8
specification
IDS model for defining proper parameter ranges and marking anything outside the range as a violation
9
block cypher
cypher that operates using a large group of data at a time vs a single char
10
director
IDS component that analyzes the incoming data
11
clark wilson model
policy model that enforces integrity by validating constrained data source
12
AES
current symmetric digital standard that uses 128, 192, or 250 bit keys
13
worm
maleficent program that replicates & propagates on its own
14
practice
security responsibility that implements the actions involved in attaining security
15
confidentiality
security principle that information should only be shared with appropriate parties
16
access control
rules that govern which identities can access which sources
17
stealth virus
virus that catches kernel traces and calls to remove any revealing details
18
multi-factor authentication
using several forms in binding an entity to an identity
19
integrity
communication should not be modified between parties
20
RSA
method that uses large prime numbers for generating key pairs
21
access control list (ACL)
defines access from the perspective of resource objects
22
network agent
IDS data collector that resides on a firewall in front of the machines its protecting
23
firewall
used to limit access between internet networks
24
auto run
a virus that runs as soon as the disk is started
25
brute force
method for testing all possible options
26
steganography
an act of hiding data within plain sight
27
denial of service (DOS)
an attack that uses multiple agents against a single victim
28
honeypot
a fake website or service designed to be attacked by malficient actors for analysis
29
script virus
virus that leverages immediate response interpreted languages are designed around
30
reverse engineering
to break apart an application to figure out how it works by generating the source code from the application’s object code and examining it
31
backups
a defensive methodology that allows an entity to recover lost or damaged data
32
DNS security
protocol used to prevent urls from getting spoofed to fake websites
33
biometric
an application method that uses personal characteristics ie fingerprints
34
blockchain
a decentralized method for compiling a ledger that ensures integrity for the life of the ledger
35
salt
small amount of data added to an encryption key or data to localize the encryption hash process
36
RC4
example of string cypher deprecated for security purposes
37
proof of work
the act of purposely generating a collision by repeatedly executing a hash while adjusting the source data with a random ID
38
phishing
when an email that’s designed and sent to an unsuspecting victim to solicit them into taking a nefarious action
39
mandatory access control (MAC)
policy requires access defined for all subjects and resources
40
metric
cryptography where sender and receiver share same key
41
ransomware
an attack where the victim has their systems taken offline by encrypting the data as a form of extortion
42
host agent
IDS data collector that resides on the server it’s protecting
43
trojan horse
maleficent program that looks and acts like a benign program
44
protocol
security responsibility level that defines what should be done to implement desired security goals
45
public private
cryptography using key pairs: one for encrypting and the other one for decrypting
46
BIBA
policy model that supports integrity by limiting information flow from higher to lower security levels
47
catphishing
a form of social engineering where a series of texts or emails are used to gain the confidence of a potential victim
48
certificate chain
used when 2 parties don’t share a trusted third party
49
logic bomb
attack where program resides in the background until a specific set of fact occur
50
transposition
cryptographic process that moves parts of the message around
51
IP security (IPSEC)
security protocol used in VPNs
52
policy
security responsibility level where goals & objectives are defined
53
transport layer security (TLS)
security protocol used by webservices
54
capability list
defines access from the perspective of the subjects that desire resources
55
virus
maleficent code that attaches itself to other files to travel & propagate
56
diffie helman
method that uses shared party secrets to generate a secret key
57
public key infrastructure (PKI)
how a key is validated to belonging to an owner
58
hash function
function that takes a packet of any size data and derives a pattern with a limited number of bits that labels that package
59
signature
method for validating who sent a message
60
string cypher
cypher that operates one character at a time
61
SSH
application layer protocol that ensures secrecy regardless of the remaining network security
62
block modes
different cypher methods of using feedback to increase security & robustness
63
bell la PADULA
policy model that restricts confidentiality that has information flow from the lower to the higher security levels
64
sandbox
virtual network of servers designed to be attacked for analysis by testing methodologies
65
static analysis
IDS model for finding known viruses by comparing files hashes to signature libraries
66
self-signed certificate
method of validating a resource locally with no outside 3rd party
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