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An exploit is a program, or piece of code, designed to find and take advantage of a security flaw or vulnerability in an application or computer system, typically for malicious purposes such as installing malware. An exploit is not malware itself, but rather it is a method used by cybercriminals to deliver malware.

Digital worms spread through networks, but in one notable example, they spread quite effectively through USB sticks. The Stuxnet worm is one of the most famous examples of this digital exploit. It spread through both the Internet and USB sticks. This ensured that it could even reach computers without Internet access.

Problem with strcpy(): The strcpy() function does not specify the size of the destination array, so buffer overrun is often a risk. Using strcpy() function to copy a large character array into a smaller one is dangerous, but if the string will fit, then it will not be worth the risk.

Exploits are commonly classified as one of two types: known or unknown. Known exploits have already been discovered by cybersecurity researchers. Whether the known exploit is due to a vulnerability in the software, OS, or even hardware, developers can code patches to plug the hole.

Types of computer exploits Some of the most common web-based security vulnerabilities include SQL injection attacks, cross-site scripting and cross-site request forgery, as well as abuse of broken authentication code or security misconfigurations.

A vulnerability is a gap in the armor or weakness that allows people to enter. The exploit is the mechanism that someone uses to get in. For example, a door with a fragile lock has a vulnerability. The exploit uses the keys, hammer, or lockpick to break the lock.

Attacks are broader in scope, encompassing any action that aims to disrupt, damage, or destroy a digital system or network. Exploits, meanwhile, refer specifically to taking advantage of vulnerabilities in software or hardware to gain unauthorized access or control over a system or network.