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What is Information Security?

Information security (sometimes referred to as InfoSec) covers the tools and processes that organizations use to protect information. This includes policy settings that prevent unauthorized people from accessing business or personal information. InfoSec is a growing and evolving field that covers a wide range of fields, from network and infrastructure security to testing and auditing.

Information security protects sensitive information from unauthorized activities, including inspection, modification, recording, and any disruption or destruction. The goal is to ensure the safety and privacy of critical data such as customer account details, financial data or intellectual property.

The consequences of security incidents include theft of private information, data tampering, and data deletion. Attacks can disrupt work processes and damage a company’s reputation, and also have a tangible cost.

Organizations must allocate funds for security and ensure that they are ready to detect, respond to, and proactively prevent, attacks such as phishingmalware, viruses, malicious insiders, and ransomware.

The Principles of Information Security

  1. Confidentiality: This component is often associated with secrecy and the use of encryption. Confidentiality in this context means that the data is only available to authorized parties. When information has been kept confidential it means that it has not been compromised by other parties; confidential data are not disclosed to people who do not require them or who should not have access to them. Ensuring confidentiality means that information is organized in terms of who needs to have access, as well as the sensitivity of the data. A breach of confidentiality may take place through different means, for instance hacking or social engineering.
     

  2. Integrity: Data integrity refers to the certainty that the data is not tampered with or degraded during or after submission. It is the certainty that the data has not been subject to unauthorized modification, either intentional or unintentional. There are two points during the transmission process during which the integrity could be compromised: during the upload or transmission of data or during the storage of the document in the database or collection.
     

  3. Availability: This means that the information is available to authorized users when it is needed. For a system to demonstrate availability, it must have properly functioning computing systems, security controls and communication channels. Systems defined as critical (power generation, medical equipment, safety systems) often have extreme requirements related to availability. These systems must be resilient against cyber threats, and have safeguards against power outages, hardware failures and other events that might impact the system availability.