10+ Siemens Interview Questions and Answers

Nessus security tool provides vulnerability scanning and assessment capabilities for network security.

• Nessus can scan networks for vulnerabilities and provide detailed reports on security issues.

• It can identify misconfigurations, missing patches, and potential security threats.

• Nessus can prioritize vulnerabilities based on severity to help organizations focus on critical issues first.

Blind SQL Injection is a type of SQL Injection attack where the attacker does not receive any output from the application.

• The attacker sends SQL queries to the application and observes the behavior of the application to determine if the query was successful or not.

• Blind SQL Injection can be time-based or boolean-based.

• Time-based Blind SQL Injection involves sending a query that will cause a delay in the application's response if successful.

• Boolean-based Blind SQL Injection in...read more

Privilege in Windows and Linux refers to the level of access and control a user or process has over system resources.

• Privilege levels in Windows are typically categorized as Administrator, Standard User, and Guest.

• In Linux, privilege levels are determined by user accounts and groups, with root being the highest level of privilege.

• Windows uses User Account Control (UAC) to manage privileges and prevent unauthorized changes.

• Linux uses sudo and su commands to elevate privileges ...read more

To validate a buffer overflow attack, I would analyze the program's memory usage, check for abnormal behavior, and use debugging tools.

• Analyze the program's memory usage to identify any unexpected changes or overflows

• Check for abnormal behavior such as crashes, unexpected output, or system instability

• Use debugging tools like gdb or Valgrind to trace the program's execution and identify the source of the buffer overflow

• Implement security measures such as input validation and b...read more

Port 443 is used for secure HTTP (HTTPS) communication over the internet.

• Port 443 is the default port for HTTPS traffic, which encrypts data using SSL/TLS protocols.

• It is commonly used for secure communication between web browsers and servers.

• HTTPS ensures that data transmitted over the internet is encrypted and secure.

• Many websites, such as online banking and e-commerce sites, use port 443 to protect sensitive information.

PE and IDOR are both vulnerabilities in web applications, but they differ in their nature and impact.

• PE (Parameter Tampering) is a vulnerability where an attacker can modify parameters in a request to bypass security controls or gain unauthorized access.

• IDOR (Insecure Direct Object Reference) is a vulnerability where an attacker can access or manipulate data by directly referencing an object without proper authorization.

• PE can be mitigated by implementing input validation and...read more

A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

• Acts as a barrier between a trusted internal network and untrusted external network

• Can be hardware-based or software-based

• Filters traffic based on IP addresses, ports, protocols, and other criteria

• Examples include Cisco ASA, Palo Alto Networks, and pfSense

OWASP Top 10 is a list of the top 10 most critical security risks for web, API, and mobile applications.

• Injection: SQL injection, NoSQL injection, Command injection

• Broken Authentication: Weak passwords, Session management issues

• Sensitive Data Exposure: Insecure data storage, Lack of encryption

• XML External Entities (XXE): Parsing XML input from untrusted sources

• Broken Access Control: Unauthorized access to resources

• Security Misconfiguration: Default settings, Error handling

• Cro...read more

Insecure deserialization can occur in various places such as web applications, APIs, and network services.

• Web applications that accept user input and deserialize it without proper validation

• APIs that deserialize data from external sources without proper security measures

• Network services that deserialize data from untrusted sources