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Bacterium
Network security threats that are specialized and do not attack certain files.
Bait
Typically refers to a file but this refers to a internet security threat infection target of originally known characteristics. As a way of trapping file infectors insisting on larger files, a string of untrue and worthless characters of arbitrary length is recurrently used.
Biometric
A unique and measurable characteristic of a human being used to identify an individual. A key characteristic of a biometric access system is that it must operate in real-time. An example could be a fingerprint scanner, which scans the fingerprint and compares the results instantly to a stored database of acceptable fingerprints. Other characteristics include retina scans and voice recognition. Biometrics can be used with a smart card to authenticate the user. The user's biometric information is stored on a smart card, the card is placed in a reader, and a biometric scanner reads the information to match it against that on the card. This is a fast, accurate, and highly-secure form of user authentication.
Black Hat
A community or individual who either attempts to hack computer systems or explore security primarily from an attack perspective. See white hat. Block cipher a crypto-algorithm which encrypts data by encryption, like 128 bit encryption and ssl encryption, into discrete blocks of a specific size, as compared to a continuous stream of bits of data.