Security Issues: Threats to 

Computers & Communications System 

The information security protection is related to a data set, in order to preserve the value it have for an individual or an organization. These are basic characteristics of information security attributes of confidentiality, integrity, availability and authenticity, not being restricted only to these security computer systems, information systems or electronic storage. The concept applies to all aspects of information protection and data. The concept of Information Security or Computer Security is closely related to information security, including not only the security of data / information, but also the system itself.
Currently the concept of information security is standardized by the standard ISO / IEC 17799:2005 , influenced by the standard English (British Standard ) BS 7799 . The series of standards ISO / IEC 27000 have been reserved for dealing with information security standards, including the addition to the original work of Standard English. The ISO / IEC 27002:2005 has been considered formally as 17799:2005 for historical purposes.

Physical Security
Consider the physical threats such as fires, landslides; lightning, flooding, and improper access of people inappropriately treatment and material handling.

Logical Security
Aware of threats caused by viruses, remote network access, backup outdated, breach of passwords, etc..

Logical security is how a system is protected at the level of operating system and application. It is usually considered as protection against attacks, but also means protection systems against unintentional errors such as accidental deletion of important system files or application.

Password Policies
Among the policies used by large corporations to the composition of the password or the password is more controversial. For one professional hard to remember several passwords, on the other careless employees who note the password under the keyboard at the bottom of the drawers, in more severe cases the developer writes down the password on the monitor.

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