TCS Security Analyst Interview Questions and Answers

Answering questions related to nmap, IP addresses, firewall, and ping scan.

• Nmap uses various protocols such as TCP, UDP, ICMP, and ARP.

• Public IP addresses are globally unique and routable on the internet, while private IP addresses are used within a private network and not routable on the internet. Private IP ranges include 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16.

• To check connected devices and open ports, use the command 'nmap -sP ' and 'nmap -p ', respectively. To fil...read more

Major vulnerabilities encountered include SQL injection, phishing attacks, and outdated software.

• Encountered SQL injection vulnerability in a web application due to lack of input validation

• Fell victim to a phishing attack where employees unknowingly provided sensitive information

• Discovered outdated software with known security vulnerabilities that could be exploited

I approach a problem by analyzing the root cause, brainstorming solutions, and implementing a strategic plan.

• Identify the root cause of the problem

• Brainstorm potential solutions

• Develop a strategic plan to address the problem

• Implement the plan and monitor progress

• Adjust the plan as needed based on feedback and results

Incident management on DDoS attack involves identifying the attack, mitigating its impact, and preventing future attacks.

• Quickly identify the type and source of the attack

• Notify relevant stakeholders and activate incident response plan

• Mitigate the attack by filtering traffic and blocking malicious IPs

• Monitor network traffic and adjust mitigation strategies as needed

• Conduct a post-incident analysis to identify areas for improvement

• Implement preventative measures such as firewa...read more

SQL Injection is a type of cyber attack where malicious SQL code is inserted into input fields to manipulate database queries.

• SQL Injection occurs when attackers input malicious SQL code into input fields, tricking the application into executing unintended SQL commands.

• To prevent SQL Injection, use parameterized queries or prepared statements to sanitize user input.

• Input validation and limiting database permissions can also help prevent SQL Injection attacks.

• Example: SELECT *...read more

MITRE ATT&CK is a framework for understanding attacker behavior and tactics.

• MITRE ATT&CK provides a comprehensive list of tactics, techniques, and procedures (TTPs) used by attackers.

• It helps security analysts understand and categorize threats based on real-world observations.

• Security analysts can use MITRE ATT&CK to map out potential attack scenarios and improve defense strategies.

WAPT stands for Web Application Penetration Testing. It is a process of auditing and assessing the security of web applications.

• WAPT is performed to identify vulnerabilities and weaknesses in web applications.

• It involves simulating real-world attacks to test the security measures in place.

• Common techniques used in WAPT include vulnerability scanning, penetration testing, and code review.

• The goal is to uncover potential security flaws and provide recommendations for improvemen...read more

Types of Injection include SQL injection, XSS injection, and command injection.

• SQL injection: attackers insert malicious SQL code into input fields to manipulate the database

• XSS injection: attackers insert malicious scripts into web pages viewed by other users

• Command injection: attackers execute arbitrary commands on a server by manipulating input fields