Computer security, network security, or information technology security (IT security) is the protection of computer systems from the theft or corruption of their hardware, software or electronic data, and the disruption or misleading of the services they provide.
Due to the increasing reliance on the computer system the Internet and wireless networks such as Bluetooth and Wi-Fi, and the growth of smart devices (including smartphones, TVs and various micro devices), the various tiny devices that constitute Internet of Things. Due to its political and technical complexity, it is also one of the major challenges of the contemporary world.
Vulnerabilities And Attacks:
Vulnerabilities are weaknesses in design, implementation, operations, or internal controls. Most of the vulnerabilities that have been discovered are documented in the Common Vulnerabilities and Exposures (CVE) database.
The exploitable vulnerability is a vulnerability in which at least one work attack or “vulnerability” exists. Vulnerabilities are typically captured or exploited manually using automated tools or using custom scripts.
In order to protect computer systems, it is important to understand the attacks that can be made to them. These threats can usually be classified into one of the following categories:
A backdoor in a computer system, cryptosystem or algorithm is any secret method that bypasses normal authentication or security controls. They can exist for a number of reasons, including original design or misconfiguration. They may have been added by authorized parties to allow some legitimate access, or added by attackers for malicious reasons. But regardless of their motivation, they create a vulnerability.
Denial of Service Attack:
A denial of service attack (DoS) is designed to make it impossible for prospective users to use computer or network resources. An attacker can refuse to provide services to individual victims, such as deliberately entering incorrect passwords continuously to lock victim accounts, or they may overload the machine or network and immediately block all users. While it is possible to block network attacks from a single IP address by adding new firewall rules, there may be multiple forms of distributed denial of service (DDoS) attacks where the attacks come from a large number of points – and the defense is more difficult. This type of attack can come from botnet zombie computers, but a range of other techniques are also possible, including reflection and amplification attacks, where the flawless system is tricked into sending traffic to the victim.
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