arvutiviiruste

Arvutiviirused, or computer viruses, are malicious software programs designed to disrupt, damage, or gain unauthorized access to computer systems. They are typically self-replicating, meaning they can spread from one computer to another, often through infected email attachments, downloads, or removable media. Once a virus infects a system, it can perform a variety of harmful actions, such as deleting files, corrupting data, slowing down performance, or even rendering the computer inoperable. Some viruses are designed to steal sensitive information, like passwords or financial details, while others are used to create botnets for launching further attacks.

The term "arvutiviirus" is the Estonian word for computer virus. The concept originated in the early days of computing, with early theoretical work dating back to the 1940s. The first actual computer viruses appeared in the 1970s and 1980s. Over time, viruses have evolved in their sophistication and the methods they use to spread and execute their payloads. They are a significant concern for individuals and organizations worldwide, necessitating the use of antivirus software and safe computing practices to mitigate risks. Antivirus programs work by scanning files and programs for known virus signatures and suspicious behavior, providing a defense against these threats.