Description: Intrusion refers to unauthorized access to a computer system or network, which can compromise the security of information and system resources. This phenomenon can manifest in various forms, including hacking attempts, malware, and other techniques aimed at undermining the integrity and confidentiality of data. Intrusions can be both external, carried out by individuals or groups outside the organization, and internal, where employees or individuals with legitimate access attempt to abuse their privileges. Detection and prevention of intrusions are fundamental in cybersecurity, as they allow for the identification and mitigation of threats before they cause significant damage. Intrusion detection systems (IDS) and intrusion prevention systems (IPS) are essential for monitoring network traffic and system activities, alerting to suspicious behaviors that may indicate an intrusion attempt. Intrusion affects not only businesses but also individuals, as exposure of personal data can result in identity theft and other cybercrimes. In an increasingly digital world, protection against intrusions has become a priority to ensure information security and trust in information technologies.
History: The concept of intrusion in computer systems began to take shape in the 1980s when the first viruses and malware started to emerge. One significant milestone was the development of the first intrusion detection systems in 1980 by security researcher Dorothy Denning, who proposed a model for detecting unauthorized access. As technology advanced, so did intrusion techniques, leading to the creation of more sophisticated tools for intrusion detection and prevention in the following decades.
Uses: Intrusion detection tools are primarily used in various environments to monitor network traffic and detect suspicious activities. They are also applied in the protection of sensitive data, ensuring that critical information is safeguarded against unauthorized access. Additionally, they are used in security audits to assess the effectiveness of implemented security measures.
Examples: A notable example of intrusion is the 2017 Equifax attack, where attackers accessed personal data of approximately 147 million people. Another case is the WannaCry ransomware attack, which affected thousands of organizations worldwide, exploiting vulnerabilities in operating systems. These incidents highlight the importance of having effective intrusion detection systems.
