Understand Adware, Bots, Bugs, Rootkits, Ransomware, Spyware, Trojan Horses, Viruses, and Worms

As a cyber security enthusiast, you often heard different terms denoting viruses in the devices. This blog clears all your doubts related to Adware, Bots, Bugs, Rootkits, Ransomware, Spyware, Trojan Horses, Viruses, and Worms.

Adware: It is also referred to as advertising-supported software. Sometimes, you have encountered a problem of advertising pop-ups automatically while browsing the internet. The main cause of this problem is Adware. It generally installs with free software that you downloaded from the internet.

Bots: Bots are referred to as infected machines where malicious software has been installed. Generally, the attacker finds vulnerable systems on the network and infects those systems. Then, they control all those systems to attack more systems, and this chain will continue. The attacker uses all those infected systems to attack websites to exhaust resources and down the server. This attack is also called Distributed Denial of Service (DDoS) attack. Websites can guard against bots with CAPTCHA tests that verify users as human.

Bugs: Bugs are referred to as a flaw in a software program that produces an undesired outcome. It generally arises because of human error while developing a source code or compiler of a program. Some bugs are minor, and some are major. Minor bugs do not affect results much; that’s why it remains unidentified for a long period of time. Major bugs can cause crashing. Security bugs cause great harm and allow attackers to hack applications. It can be prevented with developer education, quality control, and code analysis tools.

Ransomware: This is the most popular malware nowadays. In this type of attack, the user’s data got encrypted or locked out. The attacker will ask for money to decrypt or provide access to data. However, it is complicated to get data back even after giving ransom. Generally, attackers have no control over affected systems, and there is no way to recover data. Wannacry, Petya, etc., are some of the ransomware. It exploits the vulnerability of systems and spread like a computer worm.

Rootkits: It is a malicious program that acts stealthily and controls the machine remotely. Once installed in a machine, hackers can remotely execute files, access/steal information, modify system configurations, alter software, install concealed malware, or control the computer as part of a botnet. Generally, it is detected manually on noticing anomaly behavior of machines. Organizations and users can protect themselves from rootkits by regularly patching vulnerabilities in software, updating virus definitions, avoiding suspicious downloads, applications, and operating systems, and performing static analysis scans.

Spyware: Spyware is a malicious program that tracks your activity and steals information on machines. Spyware activities include activity monitoring, collecting keystrokes, data harvesting (account information, logins, financial data), and many more.

Trojan Horses: It is a malicious program that infects your system and helps install other malware types. It is different from viruses as it not replicates. But it helps other malware by masking their existence so that it appears normal for the users.

Viruses: A computer virus is a malicious code that replicates by copying itself to another program, computer boot sector, or document and changes how a computer works. It is capable of corrupting or damaging data. It can also steal passwords or data, log keystrokes, corrupt files, spam your email contacts, and many more.

Worms: Worms are the most common type of malware. It duplicates itself and spread very fast, like a virus, but it does not need to attach itself to an existing program. Worms exploit vulnerabilities in operating systems and spread through e-mail or other file transmission capabilities found on networked computers. You can identify whether your system is infected with worms or not if

  1. new icons or shortcuts on your desktops
  2. slow PC
  3. pop-ups appear regularly.

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If you have any questions, feel free to ask in the comments section below. Nothing gives me greater joy than helping my readers!

Disclaimer: This tutorial is for educational purpose only. Individual is solely responsible for any illegal act.

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