Deutsche Telekom Digital Labs Senior Security Analyst Interview Questions and Answers

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

• Helps prevent unauthorized access and cyber attacks

• Examples include Cisco ASA, Pal

Some trending security technologies include zero trust security, cloud security, and AI-driven security solutions.

• Zero trust security: Focuses on verifying identity and enforcing least privilege access controls.

• Cloud security: Addresses security concerns related to cloud computing and storage.

• AI-driven security solutions: Utilize artificial intelligence and machine learning to detect and respond to security threats.

• Blo...read more

Implemented a comprehensive security incident response framework to effectively detect, respond to, and recover from security incidents.

• Developed incident response policies and procedures to outline roles, responsibilities, and escalation paths.

• Established communication protocols for notifying stakeholders and coordinating response efforts.

• Conducted regular tabletop exercises and simulations to test the effectiveness o...read more

I handle phishing incidents by promptly identifying and blocking malicious emails, educating users on how to recognize phishing attempts, and implementing security measures.

• Promptly identify and block malicious emails

• Educate users on how to recognize phishing attempts

• Implement security measures such as email filtering and multi-factor authentication

Log4j vulnerability is a critical security flaw in the Apache Log4j logging library that allows remote code execution.

• Log4j vulnerability (CVE-2021-44228) allows attackers to execute arbitrary code remotely.

• The vulnerability affects versions 2.0 to 2.14.1 of Apache Log4j.

• Exploiting the vulnerability can lead to serious security breaches and data exfiltration.

• Organizations need to patch affected systems immediately and

I have held roles such as Security Analyst, Incident Responder, and Security Engineer.

• Security Analyst: Conducted security assessments and implemented security measures.

• Incident Responder: Responded to security incidents and conducted forensic investigations.

• Security Engineer: Designed and implemented security solutions to protect systems and data.

Main event IDs to monitor as an SOC analyst

• Event ID 4624 - Successful account logon

• Event ID 4625 - Failed account logon

• Event ID 4768 - Kerberos authentication ticket request

• Event ID 4769 - Kerberos service ticket request

• Event ID 5140 - Network share access

• Event ID 5156 - Firewall rule added

• Event ID 7035 - Service control manager event

• Event ID 7045 - Service installation

• Event ID 800 - Windows update installation