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%u062c%u0645%u064a%u0639 %u0627%u0644%u062d%u0642%u0648%u0642 %u0645%u062d%u0641%u0648%u0638%u0629 %u0640 %u0627%u0625%u0644%u0639%u062a%u062f%u0627%u0621 %u0639%u0649%u0644 %u062d%u0642 %u0627%u0645%u0644%u0624%u0644%u0641 %u0628%u0627%u0644%u0646%u0633%u062e %u0623%u0648 %u0627%u0644%u0637%u0628%u0627%u0639%u0629 %u064a%u0639%u0631%u0636 %u0641%u0627%u0639%u0644%u0647 %u0644%u0644%u0645%u0633%u0627%u0626%u0644%u0629 %u0627%u0644%u0642%u0627%u0646%u0648%u0646%u064a%u062976Chapter FiveInformation security is the protection of information and data circulating over the Internet from tampering, sabotage and alteration, or from any danger that threatens it, such as the access of any person who is not authorized to access it and tamper with its data and view it, by providing the necessary means and methods to protect it from internal and external risks, and the subject of information security is An old topic, but the need and demand for it increased with the spread of the use of the Internet and dependence on it in all areas of life, which required the transfer of data and information across multiple networks, and the spread of social networks allowed the urgent need for that. Failed computer systems can lead to significant or total loss of business function and firms now more vulnerable than ever. A security breach may cut into firm%u2019s market value almost immediately impacting its customers and service performance. Inadequate security bring forth these issues. Confidential Information Elements: Secrecy: It means preventing an unauthorized person from gaining access to someone else's data. data integrity: Integrity here means preserving data from modification or alteration by persons who are not authorized to access it, such as that aperson intentionally or unintentionally accesses data that he is not allowed to access, as well as if a virus reaches the computer and modifies its data, this is also a violation Availability of data: It means the availability of complete data when it is needed so that it is correct and accurate information that is not modified or incomplete, which makes the elements of the system work properly. Information security fields Application security Application security is a broad field of information security that covers vulnerabilities in software, web and mobile applications, and application programming interfaces (APIs).