(pronounced as separate letters) Short for alternate data stream, a function of Microsoft’s NTFS file system in which files can be embedded in other files and are invisible to the user through Windows Explorer (i.e., the ADS does not affect the size, function or display of the main file the ADS is attached to). While ADS files (which are well known throughout the hacker community) can be used maliciously by an attacker wishing to plant an executable file into another file without it being detected, ADS also is used legitimately by programmers. For example, an antivirus program can include a checksum value in an ADS attached to each file.
Microsoft originally included the ADS function in NTFS in order to ensure file server compatibility with the Macintosh hierarchical file system in which files are forked.
(1) Short for Analog Display Services Interface (Bellcore standard). (2) Short for Active Directory Service Interfaces (Microsoft).
Short for asymmetric digital subscriber line, ADSL is a type of DSL broadband communications technology used for connecting to the Internet. ADSL allows more data to be sent over existing copper telephone lines (POTS), when compared to traditional modem lines. A special filter, called a microfilter, is installed on a subscriber’s telephone line to allow […]
ADSL+2 is an extension to ADSL broadband technology that provides subscribers with significantly faster download speeds when compared to traditional ADSL connections. ADSL+2 works in the same fashion as ADSL a special filter is installed on a subscriber’s telephone line to split existing copper telephone lines (POTS) between regular telephone (voice) and ADSL+2. ADSL2+ service […]
Short for Application Foundation Classes, a set of Microsoft foundation classes written entirely in Java. The AFC sits on top of the Java Development Kit (JDK) and extends Sun’s Abstract Window Toolkit (AWT). A similar group of foundation classes is Netscape’s Internet Foundation Classes (IFC).
Short for Automated Fingerprint Identification System, AFIS is a type of biometric system that uses digital imaging to capture a fingerprint, which then can then be compared to a database of fingerprint records to help determine the identity of an individual. AFIS is a biometrics system commonly used in law enforcement where sets of prints […]