First of all, let’s define what a cyberattack is? The simple definition of a cyberattack is an attack from one or multiple computers against one or several computers or networks. Cyberattacks divide into two main categories: the first category is when the hacker's aim is to harm the target computer, whereas the other type’s purpose is to get access to the other computer and perhaps gain control over its data.
There are different techniques that cybercriminals use to hack. Let’s go through some of the most popular ones and see how each one works.
Phishing - a technique by which cybercriminals send emails to trick the target into taking some action that's potentially harmful. The target may be asked to download a vital document, or instructed to click on a website where they’ll have to give up valuable information, such as usernames and passwords. These type of emails may be addressed to thousands of users, and the majority of them may get easily deceived.
Malicious Software - also known as Malware, can refer to any software that is designed to harm to a single computer, server, or network. Viruses and trojans are types of malware. The only difference is the way they are being reproduced and spread. These attacks either make the systems inoperable or grant full access and control over the network to the hacker.
Denial of Service - This is a method that stops online services from working correctly. It can be achieved by sending so much traffic to a single website that it gets overwhelmed and therefore either stops working or becomes unavailable for real users.
A distributed denial of service attack uses several computers, usually compromised by malware and under the control of cybercriminals and hackers to funnel the traffic towards targets.
Man in the Middle - A method by which attackers manage to put themselves between the user and the service they’re trying to connect. Let’s say the user wants to connect to a Wi-Fi network, so the attacker sets up a Wi-Fi network with a login screen designed to mimic anything nearby, be it a hotel, cafe, company, etc.. Once the user logs in, the hacker gets all the information he/she wants, including banking passwords, and other confidential information of such kind.
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