NTT Senior Security Analyst Interview Questions and Answers

Ransomware attacks encrypt files and demand payment for decryption.

• Encrypts files and demands payment for decryption

• May use social engineering tactics to trick victims into downloading malware

• May spread through phishing emails, malicious websites, or infected software

• Examples include WannaCry, Petya, and Locky

The port number of SMB is 445.

• SMB stands for Server Message Block.

• SMB is a protocol used for file sharing and printer sharing.

• Port 445 is used for direct TCP/IP connection without NetBIOS.

• Port 139 is also used for SMB over NetBIOS.

SMB relay attack is a type of attack where an attacker intercepts and relays SMB traffic to gain unauthorized access to a target system.

• The attacker intercepts SMB traffic between two systems and relays it to gain access to the target system.

• The attack can be carried out using tools like Responder or Metasploit.

• The attack can be prevented by disabling SMBv1, using SMB signing, and implementing network segmentation.

• An e...read more

I came across a vulnerability in a web application that allowed for SQL injection attacks.

• Identified lack of input validation in user inputs

• Discovered that the application was directly executing user-supplied SQL queries

• Suggested implementing parameterized queries to prevent SQL injection

• Tested the vulnerability by attempting to inject SQL code through input fields

It depends on the specific use case and requirements.

• TCP is reliable and ensures all data is delivered in order, but it can be slower due to the overhead of error-checking and retransmission.

• UDP is faster and more efficient for real-time applications like video streaming or online gaming, but it does not guarantee delivery or order of packets.

• Choose TCP for applications that require reliable data transmission, such as ...read more

Hashing is a process of converting input data into a fixed-size string of bytes using a mathematical algorithm.

• Hashing is commonly used in password storage to securely store user passwords without storing the actual password.

• Hashing is used in digital signatures to ensure the integrity of the signed data.

• Blockchain technology uses hashing to create a secure and tamper-proof record of transactions.

• File integrity checks ...read more

Prioritizing and remediating vulnerabilities using OWASP Top 10

• Start by identifying the vulnerabilities that pose the highest risk to the organization

• Use the OWASP Top 10 as a guide to prioritize vulnerabilities

• Consider the likelihood and potential impact of each vulnerability

• Remediate vulnerabilities based on their priority level

• Perform regular vulnerability assessments to stay up-to-date on new vulnerabilities

• Example...read more