What is virus and worms in cyber security?
In the realm of cyber security, understanding the concepts of viruses and worms is crucial for protecting digital systems and data. Both viruses and worms are forms of malicious software (malware) designed to disrupt, damage, or gain unauthorized access to computer systems. While they share some similarities, they also have distinct characteristics that set them apart.
A virus is a type of malware that requires a host program or file to spread. It attaches itself to these files and, when executed, replicates itself and spreads to other files or systems. Viruses can cause a range of harmful effects, such as corrupting data, slowing down system performance, or stealing sensitive information. They often spread through email attachments, infected websites, or removable storage devices.
On the other hand, a worm is a self-replicating malware that can spread across networks without the need for a host program or file. Unlike viruses, worms exploit vulnerabilities in operating systems or network protocols to propagate. Once a worm gains access to a system, it can spread to other connected devices, creating a network of infected machines known as a botnet. This network can be used for various malicious activities, such as launching distributed denial-of-service (DDoS) attacks or mining cryptocurrencies.
In the following sections, we will delve deeper into the characteristics, propagation methods, and prevention strategies for viruses and worms in cyber security.
