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- What is Ethical Hacking?
Answer: Ethical hacking is the process of intruding a network or a system to identify the threats or vulnerabilities present in them. This process enables us to fix the weaker areas of the systems or network in order to protect them from persons who try to attack them.
- What is a Sniffing attack?
Answer: Sniffing is a procedure used by hackers to monitor and capture all the network packets with the help of sniffing tools. For example, this process is similar to tapping a phone call and listening to the ongoing conversation.
- What the various sniffing tools available?
Answer: There are many sniffing tools available, all have their own features of gathering information and analyzing traffic. Some of the commonly used tools are listed below:
- MSN Sniffer
- What is Phishing?
Answer: Phishing involves a process of contacting the target user by email, phone or text message and gathering sensitive information like credit card details, passwords, etc.
- What is a firewall?
Answer: A firewall is a network security system that allows or blocks network traffic as per predetermined security rules. These are placed on the boundary of trusted and untrusted networks.
- What is the difference between encryption and hashing?
Answer. Hashing is used to validate the integrity of the content, while encryption ensures data confidentiality and security. Encryption is a two-way function that includes encryption and decryption, while hashing is a one-way function that changes a plain text to a unique digest that is irreversible.
- What is the difference between IP address and Mac address?
Answer: IP address: For every device, an IP address is assigned. The IP address is a number allocated to a connection of a network.
MAC address: A MAC address is a unique serial number assigned to every network interface on every device.
The major difference is MAC address uniquely identifies a device that wants to take part in a network while the IP address uniquely defines a connection of a network with an interface of a device
- What is SQL injection?
Answer: Sql injections is a web hacking technique used to destroy a database. It executes malicious SQL statements and controls a database server behind a web application. Hackers make use of these statements to bypass the security measures of the application.
- Why hackers use a keylogger?
Answer: Keylogger is a basic tool used by software companies to troubleshoot and check if there are any technical problems on their network or systems. But, hackers use these keyloggers to track the keystrokes of the user and gain access to their sensitive information.
- What is Cryptojacking?
Answer: Malicious crypto mining or Cryptojacking is a type of online threat which uses the machine resources to mine forms of digital money known as cryptocurrency. This process can be carried out on a mobile device or on a computer.
- Explain what is Network Sniffing?
A network sniffer monitors data flowing over computer network links. By allowing you to capture and view the packet level data on your network, sniffer tool can help you to locate network problems. Sniffers can be used for both stealing information off a network and also for legitimate network management.
- What is Mac Flooding?
Mac Flooding is a technique where the security of given network switch is compromised. In Mac flooding the hacker or attacker floods the switch with large number of frames, then what a switch can handle. This make switch behaving as a hub and transmits all packets at all the ports. Taking the advantage of this the attacker will try to send his packet inside the network to steal the sensitive information.
- Explain what is Pharming and Defacement?
Pharming: In this technique the attacker compromises the DNS ( Domain Name System) servers or on the user computer so that traffic is directed to a malicious site
Defacement: In this technique the attacker replaces the organization website with a different page. It contains the hackers name, images and may even include messages and background music
- What do you mean by exploitation?
Answer. Exploitation is a part of programmed software or script that allows hackers to gain control over the targeted system/network and exploit its vulnerabilities. Mostly hackers use scanners like OpenVAS, Nessus, etc., to find these vulnerabilities.
- What is defacement?
Answer. Defacement is an attack in which the hacker changes the visual appearance of a web page or website. The attacker replaces the firm’s site with the alternate page or sometimes opposite to the text of the website.
- What is MIB?
Answer: Management Information Base(MIB) is a group of network objects which are manageable. These objects are a logical form of Physical networking components which are Simple Network Management Protocol(SNMP) Enabled. MIB’s store information about software versions, available storage disk space, IP address or port number.
- What is ARP poisoning?
Answer. ARP (Address Resolution Protocol) poisoning is also known as ARP spoofing or ARP Poison routing. It is a form of attack where the attacker changes the MAC (Media Access Control) address and attacks the ethernet LAN network by changing the target computer’s ARP cache with forged requests and reply packets.
- What is a Script kiddie?
Answer: A script kiddie is someone who lacks basic skills of programming knowledge and makes use of a simple software to perform an attack on a computer.
- Explain what is NTP?
To synchronize clocks of networked computers, NTP (Network Time Protocol) is used. For its primary means of communication UDP port 123 is used. Over the public internet NTP can maintain time to within 10 milliseconds.
- What is a Bot?
Answer: A bot is a script/program/software created to attack faster than humans.