What is a vulnerability?(What is, Concept and Definition)

Alternatively called security hole , a vulnerability is a security weakness in a computer system that allows unauthorized or unwanted access.For example, a web browser The Internet could have a vulnerability that blocks the browser or allows someone to read or copy files from your computer when visiting your site.

To help detect vulnerabilities, vulnerability scanner tools can be used to locate weaknesses in networks or programs.These tools are computer programs that are used to collect information that an attacker can use to Gaining illegal or unauthorized access to a network.Information can determine which computers are present along with the operating systems they are running.Once that information is known, known exploits or discoveries of recent vulnerabilities can be made on the target system..

Several computer security companies also offer vulnerability scanners and programs that can help detect network vulnerabilities and keep them more secure.The costs of security software can vary greatly, from a free assessment to a high-level report that It can cost more than $ 30,000.

When a vulnerability is detected in the software, its developer should update or patch the insecure code.However, if the program is no longer supported by the developer, it cannot be fixed and remains vulnerable.If the vulnerability is with a network and not with a program, it would be up to the network administrator to correct it.