Anything protected by the copyright law has a legal concept that grants artists or authors control over their creations. On the other hand, anything in the public domain is not protected by intellectual property laws and the public owns these works.
A book published in 1758 can be classified as belonging to the public domain. According to U.S laws, works or creations published in the U.S before 1924 might be deemed expired.
As a bloggers, when you hit the publish button, any work created is protected by copyright and the material inside is yours.
A music record from the 1960s - protected by copyright law
An infographic made by the federal government - public domain
A photograph taken in 1980 - protected by copyright law
There are six categories of security services: authenticiation, access control, data confidentiality, data integrity, nonrepudiation, and availability service. First, is authentication service, which defines as the assurance that the communicator is legitimate and is the one that it claims to be. It can either be peer entity or data origin authentication. Second, access control which is to prevent any unauthorized uses of resources. After one is being authenticiated, then this service limit/controls who access? what accessing rights to the resources are allowed depending on the identified individuals. Data confifentiality: the protection of data from unauthorized disclosure. Data integrity: the assurance that data received are exactly as sent by an authorized entity (e.t.c, contain no modificafion, insertion, deletion, or replay).
