SISA Information Security
Kenstar Interview Questions and Answers
Q1. Linq questions: First vs Firstordefault, single vs singleordefault, convert generic list to non generic type.
Explanation of Linq methods First, FirstOrDefault, Single, SingleOrDefault and converting generic list to non generic type.
First returns the first element of a sequence, throws an exception if sequence is empty.
FirstOrDefault returns the first element of a sequence or default value if sequence is empty.
Single returns the only element of a sequence, throws an exception if sequence has more than one element or is empty.
SingleOrDefault returns the only element of a sequence or d...read more
Q2. Examples for False Positive identified in SIEM
False positives in SIEM
Misconfigured rules triggering alerts
Legitimate traffic being flagged as malicious
Inaccurate threat intelligence data
Inadequate correlation rules
Outdated signatures or patterns
Q3. complete phishing analysis
Phishing analysis involves examining suspicious emails or websites to identify potential threats.
Check the sender's email address for any inconsistencies or misspellings
Look for urgent language or requests for personal information
Verify the legitimacy of any links by hovering over them before clicking
Check for poor grammar or spelling errors in the email content
Report any suspicious emails to the appropriate IT or security team
Q4. Difference between hashing and encryption
Hashing is a one-way process of converting data into a fixed-length value while encryption is a two-way process of converting data into a coded message.
Hashing is used for data integrity checks and password storage while encryption is used for secure transmission of data.
Hashing is irreversible while encryption is reversible.
Hashing algorithms include MD5, SHA-1, SHA-256 while encryption algorithms include AES, RSA, DES.
Hashing is faster than encryption as it involves a one-w...read more
Q5. What is CryptoGraphy
Cryptography is the practice of secure communication in the presence of third parties.
It involves techniques for secure communication and data protection
Uses mathematical algorithms to encrypt and decrypt data
Examples include AES, RSA, and SHA
Cryptography is used in various fields such as finance, military, and healthcare
Q6. Explain cyber kill chain
Cyber kill chain is a framework that describes the stages of a cyber attack.
It consists of seven stages: reconnaissance, weaponization, delivery, exploitation, installation, command and control, and actions on objectives.
The goal is to identify and disrupt the attack at an early stage.
For example, if an attacker is in the reconnaissance stage, organizations can implement measures to detect and prevent the attacker from progressing to the next stage.
The cyber kill chain is oft...read more
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