What are malicious attacks?

We all are familiar with the fact that our pc, laptops, Tabs, and mobile phones get attacked by viruses or malware, and to prevent and protect our devices from such attacks, we install various protective solutions that are either paid or licensed, or free (but for a limited time, trial version). This is about the safe practice we implement in layman's terms, but most people aren't aware of malicious attacks? And what are its types? Let’s discuss malicious attacks to gain some knowledge about these guys who are unauthorized guests!

What is malicious code?

Malicious code is generally an artificial (hacker) software that intends to get information or alter the victim's device or system without the victim's or authorized user's consent. this is like gaining access to one's system without knowing them, i.e., unauthorized access; generally, this malicious code is in the form of software or files or documents which, when get incorporated into your system, can cause potential harm to your system. Our system or device has very critical, personal, and confidential information; breaching such information is an offense, privacy of data rights is violated. But bad guys or hackers don't give a damn about it; they want your information for personal gain or either to blackmail one by demanding money.

Now, we will see the classification of such attacks; in my knowledge, there are two types of attacks under which further attacks are categorized.

Active attacks- these attacks changes, alters, or modify the information or resources of the victim's computer.

Passive attacks don't change, alter, or modify the information or resource but gain as much information as possible from the victim's system.

Underactive attacks, several other attacks are categorized: ransomware, Trojans, botnets, rootkits, worms, and viruses.

Ransomware, one of the trending attacks these days, has ruled the systems of organizations; in this attack, the hacker encrypts the files, folder or most probably, we could say the entire system of the victim to decrypt the hackers or the bad guys charge a large amount of ransom, i.e., money either to transfer directly or in the form of cryptocurrency, after paying money or ransom they give a decryption key or decrypt the system.

Trojan are those malicious codes that look legitimate to the seeker and get downloaded with another software, i.e., these Trojan files get attach themselves to any wise software and get download with them; as soon as the Trojan enters the system, it starts to corrupt the files and destroy data.

Botnets are made up of a group of malicious or compromised computers remotely connected via a network; now, these botnets are controlled by another group of people of the third party or, let's say, hackers, to attack others targeted systems.

Rootkits are those malicious programs that get installed to the system via backdoors or by Trojans. These rootkits take access to your system and steal information; it also affects the RAM and hardware of the system, which is why the system becomes slow.

Worms are the malicious code that gets into the system via different means like files or folders. As soon as they enter the system, they start replicating themselves quickly and therefore corrupt the system.

Viruses are those malicious programs or software which infect the computer by altering its operation and spread to another system. The virus gets attached to the legitimate program in the system, changes the code and replicates itself, and eventually affects the entire system.

The passive attack has spyware, adware, eavesdrop, key log.

Spyware is the malicious code that spies on the system, i.e., every event we do on the system when installed in the system. Ultimately it gains as much information as possible from the system.

Adware is those malicious codes that pop out ads whenever we open any application or surf the web. We are quite familiar with such attacks as whenever we open some site or open some application; we can see the ad pop out; these are nothing but adware.

Eavesdrop is generally carried out by the hacker who wants to gain information from those who are communicating but without knowing them. Communication via an app or the internet is highly encrypted. Somehow, the hacker hacks the end-to-end encryption and gets unauthorized access between the communication without even knowing by people who are communicating. The attacker or hacker doesn't alter or change the information but gains it, ultimately violating the privacy law.

Keylog doesn't manipulate or alters your data; it simply focuses on which key on the keyboard is typed. Hackers use it to steal passwords, bank credentials, or user names to gain financial or control access.

So, these are some of the attacks that occur, and companies, organizations, etc., experience a tremendous amount of loss due to their data breach. There are some of the practices which one should implement to protect system/computer from such attacks, firstly employ antivirus or antimalware and update it from time to time, secondly the firewalls, they play a very significant role in filtering the traffic and allowing only legitimate traffic to pass through and thirdly patch management, it is important to apply a patch regularly otherwise it will create vulnerability to your system and invites further attacks.

Thank you :)