Depending on the quality and the extent of error handling logic present in the computer, this failure can result in error messages, corrupted output or even program crashes. Humans can cope with this easily, but a computer program will fail. Aside from the higher programming and processing overhead, output displays intended for human consumption often change structure frequently. In the second case, the operator of the third-party system will often see screen scraping as unwanted, due to reasons such as increased system load, the loss of advertisement revenue, or the loss of control of the information content.ĭata scraping is generally considered an ad hoc, inelegant technique, often used only as a "last resort" when no other mechanism for data interchange is available. Data scraping often involves ignoring binary data (usually images or multimedia data), display formatting, redundant labels, superfluous commentary, and other information which is either irrelevant or hinders automated processing.ĭata scraping is most often done either to interface to a legacy system, which has no other mechanism which is compatible with current hardware, or to interface to a third-party system which does not provide a more convenient API. It is therefore usually neither documented nor structured for convenient parsing. Thus, the key element that distinguishes data scraping from regular parsing is that the output being scraped is intended for display to an end-user, rather than as an input to another program. Very often, these transmissions are not human-readable at all. Such interchange formats and protocols are typically rigidly structured, well-documented, easily parsed, and minimize ambiguity. Normally, data transfer between programs is accomplished using data structures suited for automated processing by computers, not people. Security information and event management (SIEM)ĭata scraping is a technique where a computer program extracts data from human-readable output coming from another program.Host-based intrusion detection system (HIDS).
0 Comments
Leave a Reply. |