1information assets
The focus of information security; information that has value to the organization, and the systems that store, process, and transmit the information.
2media
As a subset of information assets, the systems and networks that store, process, and transmit information.
3data
Items of fact collected by an organization. Data includes raw numbers, facts, and words. Student quiz scores are a simple example of data.
4information
Data that has been organized, structured, and presented to provide additional insight into its context, worth, and usefulness.
5data security
Commonly used as a surrogate for information security, data security is the focus of protecting data or information in its various states—at rest (in storage), in processing, and in transmission (over networks).
6databases
A collection of related data stored in a structured form and usually managed by a database management system.
7database security
A subset of information security that focuses on the assessment and protection of information stored in data repositories like database management systems and storage media.
8attack
An intentional or unintentional act that can damage or otherwise compromise information and the systems that support it. Attacks can be active or passive and direct or indirect.
9exploits
A technique used to compromise a system.
10vulnerabilities
A potential weakness in an asset or its defensive control system(s).
11intellectual property (IP)
The creation, ownership, and control of original ideas as well as the representation of those ideas.
12software piracy
The unauthorized duplication, installation, or distribution of copyrighted computer software, which is a violation of intellectual property.
13availability disruption
An interruption in service, usually from a service provider, which causes an adverse event within an organization.
14service level agreement
A document or part of a document that specifies the expected level of service from a service provider
15uptime
The percentage of time a particular service is available
16downtime
The percentage of time a particular service is not available
17spike
A short-term increase in electrical power availability, also known as a swell.
18surge
A long-term increase in electrical power availability.
19sag
A short-term decrease in electrical power availability.
20fault
A short-term interruption in electrical power availability.
21noise
The presence of additional and disruptive signals in network communications or electrical power delivery.
22brownout
A long-term decrease in electrical power availability
23blackout
A long-term interruption (outage) in electrical power availability.
24competitive intelligence
The collection and analysis of information about an organization’s business competitors through legal and ethical means to gain business intelligence and competitive advantage.
25industrial espionage
The collection and analysis of information about an organization’s business competitors, often through illegal or unethical means, to gain an unfair competitive advantage. Also known as corporate spying, which is distinguished from espionage for national security reasons.
26shoulder surfing
The direct, covert observation of individual information or system use.
27trespass
Unauthorized entry into the real or virtual property of another party.
28hacker
A person who accesses systems and information without authorization and often illegally.
29expert hacker
A hacker who uses extensive knowledge of the inner workings of computer hardware and software to gain unauthorized access to systems and information
30novice hacker
A relatively unskilled hacker who uses the work of expert hackers to perform attacks
31professional hacker
A hacker who conducts attacks for personal financial benefit or for a crime organization or foreign government
32penetration tester
An information security professional with authorization to attempt to gain system access in an effort to identify and recommend resolutions for vulnerabilities in those systems.
33script kiddies
A hacker of limited skill who uses expertly written software to attack a system
34packet monkeys
A script kiddie who uses automated exploits to engage in denial-of-service attacks.
35privilege escalation
The unauthorized modification of an authorized or unauthorized system user account to gain advanced access and control over system resources.
36jailbreaking
Escalating privileges to gain administrator-level or root access control over a smartphone operating system (typically associated with Apple iOS smartphones)
37rooting
Escalating privileges to gain administrator-level control over a computer system (including smartphones). Typically associated with Android OS smartphones.
38cracker
A hacker who intentionally removes or bypasses software copyright protection designed to prevent unauthorized duplication or use.
39phreakers
A hacker who manipulates the public telephone system to make free calls or disrupt services.
40cracking
Attempting to reverse-engineer, remove, or bypass a password or other access control protection, such as the copyright protection on software
41brute force password attack
An attempt to guess a password by attempting every possible combination of characters and numbers in it.
4210.4 password rule
An industry recommendation for password structure and strength that specifies passwords should be at least 10 characters long and contain at least one uppercase letter, one lowercase letter, one number, and one special character.
43dictionary password attack
A variation of the brute force password attack that attempts to narrow the range of possible passwords guessed by using a list of common passwords and possibly including attempts based on the target’s personal information.
44rainbow table
A table of hash values and their corresponding plaintext values that can be used to look up password values if an attacker is able to steal a system’s encrypted password file.
45social engineering
The process of using social skills to convince people to reveal access credentials or other valuable information to an attacker.
46advance-fee fraud (AFF)
A form of social engineering, typically conducted via e-mail, in which an organization or some third party indicates that the recipient is due an exorbitant amount of money and needs only a small advance fee or personal banking information to facilitate the transfer.
47phishing
A form of social engineering in which the attacker provides what appears to be a legitimate communication (usually e-mail), but it contains hidden or embedded code that redirects the reply to a third-party site in an effort to extract personal or confidential information.
48spear phishing
Any highly targeted phishing attack.
49pretexting
A form of social engineering in which the attacker pretends to be an authority figure who needs information to confirm the target’s identity, but the real object is to trick the target into revealing confidential information. Pretexting is commonly performed by telephone.
50information extortion
The act of an attacker or trusted insider who steals or interrupts access to information from a computer system and demands compensation for its return or for an agreement not to disclose the information.
51ransomware
Computer software specifically designed to identify and encrypt valuable information in a victim’s system in order to extort payment for the key needed to unlock the encryption.
52hacktivist/cyberactivist
A hacker who seeks to interfere with or disrupt systems to protest the operations, policies, or actions of an organization or government agency.
53cyberterrorism
A hacker who attacks systems to conduct terrorist activities via networks or Internet pathways.
54cyberwarfare
Formally sanctioned offensive operations conducted by a government or state against information or systems of another government or state.
55malware
Computer software specifically designed to perform malicious or unwanted actions.
56zero-day attack
An attack that makes use of malware that is not yet known by the anti-malware software companies.
57adware
Malware intended to provide undesired marketing and advertising, including pop-ups and banners on a user’s screens.
58spyware
Any technology that aids in gathering information about people or organizations without their knowledge.
59virus
A type of malware that is attached to other executable programs. When activated, it replicates and propagates itself to multiple systems, spreading by multiple communications vectors
60macro virus
A type of virus written in a specific macro language to target applications that use the language. The virus is activated when the application’s product is opened.
61boot virus
Also known as a boot sector virus, a type of virus that targets the boot sector or Master Boot Record (MBR) of a computer system’s hard drive or removable storage media.
62memory-resident viruses
A virus that is capable of installing itself in a computer’s operating system, starting when the computer is activated, and residing in the system’s memory even after the host application is terminated.
63non-memory-resident viruses
A virus that terminates after it has been activated, infected its host system, and replicated itself.
64worms
A type of malware that is capable of activation and replication without being attached to an existing program.
65Trojan horses
A malware program that hides its true nature and reveals its designed behavior only when activated.
66polymorphic threat
Malware (a virus or worm) that over time changes the way it appears to antivirus software programs, making it undetectable by techniques that look for preconfigured signatures.
67virus hoaxes
A message that reports the presence of a nonexistent virus or worm and wastes valuable time as employees share the message.
68back door (trap door or maintenance hook)
A malware payload that provides access to a system by bypassing normal access controls.
69denial-of-service (DoS) attack
An attack that attempts to overwhelm a computer target’s ability to handle incoming communications, prohibiting legitimate users from accessing those systems.
70distributed denial-of-service (DDoS) attack
A form of DoS attack in which a coordinated stream of requests is launched against a target from many locations at the same time using bots or zombies.
71bots (zombies)
an automated software program that executes certain commands when it receives a specific input.
72spam
Undesired e-mail, typically commercial advertising transmitted in bulk.
73mail bomb
An attack designed to overwhelm the receiver with excessive quantities of e-mail.
74packet sniffer
A software program or hardware appliance that can intercept, copy, and interpret network traffic.
75spoofing
A technique for gaining unauthorized access to computers using a forged or modified source IP address to give the perception that messages are coming from a trusted host.
76pharming
The redirection of legitimate user Web traffic to illegitimate Web sites with the intent to collect personal information.
77Domain Name System (DNS) cache poisoning
The intentional hacking and modification of a DNS database to redirect legitimate traffic to illegitimate Internet locations.
78Main-in-the-middle
A group of attacks whereby a person intercepts a communications stream and inserts himself in the conversation to convince each of the legitimate parties that he is the other communications partner
79TCP hijacking
A form of man-in-the-middle attack whereby the attacker inserts himself into TCP/IP-based communications
80mean time between failure (MTBF)
The average amount of time between hardware failures, calculated as the total amount of operation time for a specified number of units divided by the total number of failures.
81mean time to failure (MTTF)
The average amount of time until the next hardware failure.
82MTTD
The average amount of time a computer repair technician needs to determine the cause of a failure.
83MTTR
The average amount of time a computer repair technician needs to resolve the cause of a failure through replacement or repair of a faulty unit.
84buffer overrun
An application error that occurs when more data is sent to a program buffer than it is designed to handle.
85command injection
An application error that occurs when user input is passed directly to a compiler or interpreter without screening for content that may disrupt or compromise the intended function.
86cross-site scripting (XSS)
A Web application fault that occurs when an application running on a Web server inserts commands into a user’s browser session and causes information to be sent to a hostile server.
87integer bug
A class of computational error caused by methods that computers use to store and manipulate integer numbers; this bug can be exploited by attackers.
88theft
The illegal taking of another’s property, which can be physical, electronic, or intellectual.