Top 30 Interview Questions for Ethical Hacker Beginners [2025]

Interview Questions for Ethical Hacker Beginners in 2025

Here, you will read the specially gathered Top 30 Interview Questions for Ethical Hacker Beginners, which can help you prepare for interview sessions that can offer you the opportunity to work in MNCs among other professionals.

Moreover, these questions are some of the most asked questions that can give you an idea of what a real interview will go through. What are we waiting for? Let’s get started!

What is Ethical Hacking?

Finding and taking advantage of security flaws in computer systems, networks, or applications with authorization from the organization is known as ethical hacking. It seeks to fortify defenses against malevolent assaults.

To maintain security, ethical hackers adhere to professional and legal standards. The Top 30 Interview Questions for Ethical Hacker Beginners mentioned below can help you get prepared in advance. Let’s move forward!

Top 30 Interview Questions for Ethical Hacker Beginners

1. What is ethical hacking?

The act of identifying and taking advantage of weaknesses in computer networks and systems with the owner’s consent is known as ethical hacking.

2. How does ethical hacking differ from malicious hacking?

Malicious hacking is prohibited and illegal, whereas ethical hacking is permitted and lawful.

3. What are the key phases of ethical hacking?

The following are the key phases of ethical hacking:

1. Reconnaissance: Obtaining data regarding the intended system.
2. Scanning: Determining the target system’s open ports and services.
3. Gaining Access: Gaining access to the target system by taking advantage of vulnerabilities.
4. Maintaining Access: Keeping the target system accessible for additional exploitation.
5. Covering Tracks: Eliminating any traces of the assault.

4. What is footprinting, and why is it important?

In ethical hacking, the first stage of reconnaissance is called “footprinting,” during which the attacker learns as much as they can about the target system or network. Footprinting is important for the following reasons:

1. Target Identification: It assists in locating possible targets within an organization or network.
2. Vulnerability Discovery: Potential vulnerabilities can be found by learning more about the target’s software and systems.
3. Attack Planning: Effective attack planning and execution are made possible by the useful information that footprinting offers.
4. Risk Assessment: It assists in determining possible threats and evaluating the target’s overall security posture.
5. Legal Compliance: Footprinting might occasionally be required to adhere to legal or regulatory requirements.

5. Can you explain the concept of scanning in ethical hacking?

The process of methodically probing a target system or network to find open ports, services, and vulnerabilities is known as scanning.

6. What is enumeration, and what tools are used for it?

In ethical hacking, enumeration is the process of obtaining comprehensive data about a target system or network to find any potential weaknesses. Following are some of the tools used for enumeration:

1. Nmap (Network Mapper),
2. Nessus,
3. WPScan,
4. Nikto,
5. Dirbuster,
6. Searchsploit,
7. Dnsenum,
8. GoBuster,
9. Dig, and
10. Nmblookup.

7. What is vulnerability assessment?

The process of locating, categorizing, and ranking security flaws in computer networks, applications, and systems is known as vulnerability assessment.

8. What is penetration testing, and how is it different from vulnerability assessment?

Penetration testing attempts to exploit vulnerabilities found during a vulnerability assessment, simulating actual attacks.

9. What is the role of reconnaissance in ethical hacking?

The following are the roles of reconnaissance in ethical hacking:

1. Information Gathering,
2. Vulnerability Identification,
3. Attack Planning,
4. Risk Assessment, and
5. Legal Compliance.

10. What is social engineering, and how is it used in hacking?

The psychological manipulation of others to carry out tasks or reveal private information is known as social engineering. Moreover, social engineering is being used in hacking in the following ways:

1. Phishing,
2. Pretexting,
3. Baiting,
4. Tailgating,
5. Shoulder Surfing and
6. Impersonation.

11. What is phishing, and how can it be prevented?

Phishing is the fraudulent practice of impersonating a reliable organization in an electronic communication to obtain sensitive information, including credit card numbers, usernames, and passwords. Moreover, Phishing can be prevented in the following ways:

1. Be wary of unexpected messages or emails,
2. Before clicking on links, hover over them,
3. Pay close attention to the sender’s email address,
4. Check for grammatical & spelling mistakes, and
5. Never reply to unsolicited requests with personal information.

12. What is SQL injection, and how does it work?

Data-driven applications can be attacked using SQL injection, a code injection technique that inserts malicious SQL statements into an entry field for execution. Moreover, SQL injection works in the following steps:

1. Vulnerable Application,
2. Malicious Input,
3. Query Manipulation, and
4. Attacker’s Gain.

13 . What are the different types of malware?

Following are the different types of malware:

1. Viruses,
2. Worms,
3. Trojans,
4. Ransomware,
5. Spyware,
6. Adware,
7. Rootkits,
8. Keyloggers,
9. Fileless Malware, and
10. Cryptojacking.

14. What is a keylogger, and how is it detected?

A keylogger is a program that secretly records the keys pressed on a keyboard, preventing the user from realizing that their activities are being watched. One can detect keyloggers in the following ways:

1. Antivirus and Anti-malware Software,
2. Unusual System Behavior,
3. Network Monitoring,
4. Regular Software Updates,
5. Use of Virtual Keyboards, and
6. Hardware Keyboards with Built-in Security.

15. What is session hijacking, and how can it be prevented?

An attacker can impersonate a user and obtain unauthorized access to their accounts or systems by stealing their active computer session. This type of cyberattack is known as session hijacking. Moreover, session hijacking can be prevented by following the below steps:

1. HTTPS Encryption,
2. Strong Passwords and Multi-Factor Authentication (MFA),
3. Regular Software Updates,
4. Secure Network Connections, and
5. Log Out of Accounts When Finished.

16. What are firewalls, and how do they protect networks?

Based on preset security rules, a firewall is a network security system that keeps an eye on and regulates all incoming and outgoing network traffic. Moreover, in the following ways, firewalls can protect networks:

1. Packet Filtering,
2. Application Level Gateway,
3. Intrusion Detection and Prevention Systems (IDPS),
4. Virtual Private Networks (VPNs), and
5. Network Address Translation (NAT).

17. What is cryptography, and how is it used in ethical hacking?

The study of secure communication in the face of adversaries is known as cryptography. Here is how cryptography works in ethical hacking:

1. Vulnerability Assessment,
2. Penetration Testing,
3. Secure Communication,
4. Developing Secure Solutions, and
5. Reverse Engineering.

18. Can you explain the difference between symmetric and asymmetric encryption?

Asymmetric encryption employs two separate keys: a public key for encryption and a private key for decryption, whereas symmetric encryption uses a single shared key for both processes.

19. What is a brute-force attack?

Brute-force attacks are cybersecurity attacks in which the attacker attempts to guess a password or encryption key using every character combination imaginable.

20. What is a dictionary attack, and how does it differ from brute-force attacks?

While a brute-force attack tries every possible character combination, a dictionary attack uses a list of popular or well-known passwords to try and crack a password.

21. What is a Denial-of-Service (DoS) attack?

A denial-of-service (DoS) attack is a type of cyberattack that aims to prevent legitimate users from accessing a network or system by flooding it with requests or traffic.

22. How is a Distributed Denial-of-Service (DDoS) attack different from a DoS attack?

In contrast to a single-source DoS attack, a DDoS attack is much more difficult to mitigate because it originates from multiple compromised systems (a botnet) at the same time.

23. What are honeypots, and how do they help in cybersecurity?

The purpose of honeypots, which are decoy systems or resources, is to draw in and fool attackers so that security analysts can observe and analyze their actions. Moreover, honeypots can help in cybersecurity in the following ways:

1. Early Detection of Attacks,
2. Threat Intelligence Gathering,
3. Diverting Attacks,
4. Research & Development, and
5. Incident Response.

24. What is privilege escalation, and how can it be mitigated?

Privilege escalation is a tactic used by attackers to obtain higher privileges within a system without authorization, frequently by taking advantage of flaws or configuration errors. One can mitigate privilege escalation in the following ways:

1. Principle of Least Privilege,
2. Regular Security Audits,
3. Strong Password Policies,
4. Multi-Factor Authentication (MFA), and
5. Regular Software Updates.

25. What is ARP poisoning, and how can it be prevented?

Attackers can reroute network traffic to their system by manipulating the Address Resolution Protocol (ARP) table on a target network using a technique known as “ARP poisoning.” In the following ways, ARP Poisoning can be prevented:

1. Static ARP Entries,
2. Switchport Security,
3. VLANs,
4. Intrusion Detection Systems (IDS), and
5. Network Monitoring Tools.

26. What is DNS spoofing, and how does it affect security?

Using a technique known as DNS spoofing, an attacker modifies the Domain Name System (DNS) to reroute users to malicious websites rather than the intended one. In the following ways, the DNS spoofing affects security:

1. Phishing & Data Theft,
2. Malware Distribution,
3. Data Breaches,
4. Denial of Service (DoS) Attacks, and
5. Brand Damage & Reputation Loss.

27. What is network sniffing, and how can attackers use it?

The process of recording and examining network traffic moving through a particular network segment is known as network sniffing. In the following ways, attackers can use the network sniffing:

1. Password Interception,
2. Data Theft,
3. Network Mapping & Reconnaissance,
4. Eavesdropping on Communications and
5. Malware Distribution.

28. What tools are commonly used for network scanning?

Following are some of the tools commonly used for network scanning:

1. Nmap (Network Mapper),
2. Zenmap,
3. Angry IP Scanner,
4. Wireshark,
5. Masscan,
6. Unicornscan,
7. Nessus,
8. OpenVAS, and
9. SolarWinds Network Performance Monitor.

29. What is Wi-Fi cracking, and what tools are used for it?

Unauthorized access to a wireless network by evading its security measures, like the Wi-Fi password, is known as Wi-Fi cracking. Following are some of the tools used for Wi-Fi Cracking:

1. Aircrack-ng,
2. Reaver,
3. Kismet,
4. Wifite, and
5. Hashcat.

30. What certifications are useful for ethical hackers?

Following are some of the useful certifications for ethical hackers:

1. Certified Ethical Hacker (CEH),
2. CompTIA Security+, and
3. Offensive Security Certified Professional (OSCP).

Conclusion

Now that you have read the whole article, “Top 30 Interview Questions for Ethical Hacker Beginners,” you might be a bit prepared for what the future holds. Those who have the heart to learn ethical hacking skills can get in contact with Craw Security, offering the best learning environment in the IT Industry.

Craw Security is offering the “Ethical Hacking Training Course with AI in Delhi” for students who want to enhance and improve their knowledge and skills in ethical hacking. What are you waiting for? Contact, Now!