Top Ethical Hacking Interview Questions and Answers

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Almost every business, be it a government agency or any business organization, is online nowadays and is open to potential threats, which might lead to security breach, loss of data, financial loss or other major damages. To overcome this loss and strengthen security, these businesses these days are relying on ethical hacking to identify potential threats like malware, viruses, and ransomware, on a computer or a network. An ethical hacker is a professional who is certified to bypass system security and search for any weak points that could be accessible by the malicious hackers.

This article explores some of the most commonly asked ethical hacking interview questions and answers, which can help you crack your interview and work as an ethical hacker.

Q1. Tell me different forms of hacking.

There are various forms of hacking, which are –

  • Computer Hacking
  • Password Hacking
  • Website Hacking
  • Network Hacking
  • Email Hacking
  • Ethical Hacking

Q2. What are different types of hackers?

Hacking is a serious business and it is mainly categorized into three segments, basis the course of actions of the hackers –

  • Black Hat – Malware creating hacking, infiltrating computer networks for personal gains. Completely illegal
  • White Hat – An ethical hacking practice. Legal and beneficial to businesses
  • Grey Hat – A combination of both Black Hat and White Hat, their actions are often illegal

Q3. Can you protect yourself from being hacked? How?

Yes, a personal computer system or network can be protected from getting hacked by –

  • Updating the operating systems for security updates
  • Formatting any device intended to sell
  • Securing the Wi-Fi with a password
  • Using memorable and tough security answers
  • Emailing via a trusted source
  • Not storing any sensitive information on cloud


Q4. Hypothetically, you are supposed to hack a system, how would you do it?

So the process of hacking any computer network or system includes –

Reconnaissance – The first step taken by a hacker is identifying the target and fetching information as much information they could.

Scanning – The next step is examining the victim by exploiting the information gathered during reconnaissance, using automated tools like port scanners, mappers or vulnerability scanners.

Gaining access: This initiates the process of hacking, where the collected information helps to gain access to the computer network or system.

Maintaining access: The hacker now would like to access repetitively, and thus need to secure it through backdoors, rootkits and Trojans.

Covering tracks: To avoid detection and any legal action, hackers erase the tracks that may lead to investigators tracing them.

Q5. What is footprinting? What are the different techniques of footprinting?

It is the processes of collecting information about the target before gaining access, and uncovering it. Different techniques of footprinting are –

Open Source Footprinting – It is a way to find administrator contact information. This information is later used to guess the correct password.

Network Enumeration – Here the hacker tries to identify domain names and network blocks of the target.

Scanning – Scanning includes prying on the active IP addresses of a network.

Stack Fingerprinting – : This is the last footprinting step, which involves mapping the port and host.

Q6. What are different ethical hacking tools?

The most popular hacking tools used in ethical hacking are –

  • Acunetix
  • Aircrack
  • Angry IP Scanner
  • Burp Suite
  • Ettercap
  • GFI LanGuard
  • Netsparker
  • Probely
  • SaferVPN
  • Savvius

Q7. What is CIA Triangle?

CIA Triangle is a model for guiding information security policies in any organization. It stands for –

Confidentiality – Maintaining the secrecy of the information

Integrity – Keeping the information unchanged

Availability – Ensuring an all-time availability of the information to the authorized

Also Read>> Cloud Computing: The good and the bad!!

Q8. What is SNMP?

SNMP is the abbreviation for Simple Network Management Protocol and is a simple Transmission Control Protocol/Internet Protocol (TCP/IP) for remote monitoring and managing hosts, routers and other devices on a network.

Q9. What is MIB?

MIB is the short form of Management Information Base. It is a hierarchical virtual database of network having all the information about network objects. It is used by SNMP and Remote MONitoring 1 (RMON1).

Q10. What is Network Enumeration?

It is a process of gathering information about a network using protocols like Internet Control Message Protocol (ICMP) and SNMP, and offers a better view of the data. This involves fetching information from hosts, connected devices and the usernames, group information, and other related data.

Q11. What is a sniffing attack?

Sniffing attack is a process similar to tapping a phone call and listening to the ongoing conversation. Hackers use sniffing attack to monitor and capture all the network packets using sniffing tools in the real-time.

Also Read>>What Is ITIL And What Are The Benefits Of An ITIL Certification?

Q12. Name different sniffing tools.

There are numerous sniffing tools used by the hackers, however, some of the most popular ones are –

  • Dsniff
  • EtherApe
  • Ettercap
  • MSN Sniffer
  • NetworkMiner
  • PRTG Network Monitor
  • Steel Central Packet Analyzer
  • Tcpdump
  • WinDump
  • Wireshark

Q13. What is a DOS attack? Name its common forms.

Denial of Service or DOS attack is intended to shut down a machine or network so that no user can access it. This is achieved by flooding servers, systems or networks with traffic to cause over-consumption of victim resources.

Some of the common forms of DOS attacks are –

  • Buffer overflow attacks
  • ICMP flood
  • SYN flood
  • Smurf attack
  • Teardrop attack

Q14. What is coWPAtty?

coWPAtty is a C-based tool to run an offline dictionary attack against Wi-Fi Protected Access (WPA/WPA2) and audit pre-shared WPA keys using Pre-Shared Key (PSK)-based authentication. coWPAtty is capable of implementing an accelerated attack if a precomputed Pegasus Mail Keyboard (PMK file) is available for the Service Set Identifier (SSID).

Q15. Name different types of password cracking techniques.

The most popular types of password cracking techniques are –

  • Dictionary attacks
  • Brute forcing attacks
  • Hybrid attacks
  • Syllable attacks
  • Rule based attacks
  • Rainbow table attacks
  • Phishing
  • Social engineering
  • Shoulder surfing
  • Spidering
  • Guessing

Also Read>>Top ITIL Interview Questions & Answers

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