信息安全答案（Information security answer）.doc

信息安全答案（Information security answer） Information security - concerned with the security of the information itself to prevent accidental or Unauthorized disclosure, modification, and destruction of information, resulting in unauthorized information The unreliability of information, or the inability to deal with it, makes us at the bottom The use of information to serve us without incurring loss or damage Minimum loss. (Definition 1) Information security - prevents any unauthorized access to data Apply or prevent information from intentionally or unintentionally leaking, damaging, missing, etc. The occurrence of a problem in which data is kept from danger or from danger And characteristics. (definition 2) Network security -- information security in computer network environment. Information security attributes: confidentiality (Confidentiality): - to ensure that confidential information is not bugged, or that the eavesdropper does not understand the true meaning of the message. - the quality of information not being leaked to an unauthorized person. Integrity (Integrity): - - to ensure data consistency and prevent data from being tampered with by illegal users. - information remains unauthorized and cannot be changed during storage or transmission. Availability (Availability): - ensuring legitimate users access to information and resources will not be improperly denied. - information accessible by an authorized person and used as required. Non repudiation (Non-repudiation) (also called non repudiation or non repudiation) - none of the participants can deny or deny the actions and promises that have been done. - - establishing an effective accountability mechanism that prevents users from denying their behavior is extremely important in E-commerce Important。 Controllability (Controllability): - ability to control the spread and content of information 3. what are the common security threats? Security threats can sometimes be classified as intentional and accidental: A del