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Index for glossary H
Hacker
In computer security, a hacker is someone with a strong interest in understanding and manipulating computer systems, and specialises in work with the security mechanisms for these systems. Nowadays, it is most commonly used by the
mass media to refer to a person who maliciously uses computer knowledge to gain unauthorised access and cause damage to computers and data.
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Hacking
Hacking means illegally accessing other people's computer systems for destroying, disrupting, stealing files or carrying out illegal activities on the network or computer systems.
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Hardening
Hardening is a process to secure a system, including an operating system or servers such as web servers, by removing the unnecessary system components, disabling unnecessary services, tightening the system configurations, etc.
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Hash
A one-way algorithm which maps or translates one set of bits into another (generally smaller) in such a way that the algorithm yields the same hash results every time for the same message, and it is computationally infeasible for a message to be reconstituted from the hash result. Also, two different messages cannot produce the same hash results.
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Hash-lock
Hash-lock is a hash value (or meta-ID) of the corresponding key that lock a tag.
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Health Insurance Portability and Accountability Act (HIPAA)
The Health Insurance Portability and Accountability Act (HIPAA) of 1996 is a US law designed to improve the portability and continuity of health insurance coverage in both the group and individual markets, and to combat waste, fraud, and abuse in health insurance and health care delivery as well as other purposes.
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Heuristic
This is a technique for assessing the probability that a file contains a computer virus.
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Hoax
This usually consists of an email message warning recipients about a new and terribly destructive virus. It ends by suggesting that the reader should warn his or her friends and colleagues, perhaps by simply forwarding the original message to everyone in their address book. The result is a rapidly growing proliferation of pointless emails that can increase to such an extent that they overload systems.
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Honeypot
A honeypot is a decoy system put on a network as bait for attackers. The attackers believe the honeypot is a legitimate system and attack on it, without being known that their activities are being monitored.
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Honeynet
In a honeynet, a network of honeypots is connected to imitate an actual or fictitious network. It appears to attackers that many different types of applications are available on several different platforms.
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Host-based Scanner
Host-based scanner is installed in the host to be scanned, and can direct access to low-level details, such as the specific services and configuration details of the host's operating system.
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