Vestern

I am a security analyst
I am a developer
I am a Devops
I sometimes work on open-source projects

Dennis Vesterlund

Security Analyst at Atea Sverige AB

I am a passionate security specialist with 5 years of experience. I’ve been sharpening my skills within the nordic Atea SOC. Working both with customers and internal environments.

IBM Certified Associate Administrator - Security QRadar SIEM V7.2.8

Teamwork

Presentation

Leadership

Skills

Security Analysis

Worked with many security incidents in different systems. Mainly SIEM’s

IBM SOAR

Capable of installing and configuring IBM SOAR with custom and automatic workflows.

Elastic Stack

Setting up and configuring the elastic stack and beats.

IBM QRadar

Analysed security incidents. Capable of designing, setting up, and configuring an environment.

Azure Sentinel

Analysed security incidents. Capable of finding and comparing IOC’s.

Kubernetes

Writing deployments

Ansible

Writing roles, configurations and automations.

Go Development

Mainly hobby development. Maintianing GoIP which runs on ipconf.se

Python Development

Posess a good understanding of the language. Written automatic deployment installations and shells. Performed data analysis with Pandas.

Data Analysis

Performed data analysis with Pandas. Compared data between different systems investigating deliverables.

Experiences

Atea Sverige AB

May 2016 - Present, Luleå

Sweden’s leading IT-infrasructure organization.

Security Analyst

Jul 2022 - Present

Triage and analyse security incidents
Architect secure working environments, connectivity and data transfers.
DevOps (Ansible and Kubernetes)
Automating and integrating systems
Developing integrations
Teaching new hires

Technical Consultant

Nov 2017 - Jul 2022

Triage and analyse security incidents
Managing secure working environments
Automating operations with Ansible
Linux, Windows and Network operations
Deployment of retail kiosks in a production environment
Packaging of applications for windows endpoints

IT Technician

May 2016 - Oct 2017

Servicedesk customer support

Chimney sweep

Sotarn i Piteå

Apr 2015 - Dec 2015, Piteå

Chimney sweeping, ventilation cleaning and fire hazzard inspections.

Responsibilities:

Cleaning fireplaces and sweeping chimnies
Taking care of company car

Projects

GoIP

Creator

Created and management of GoIP running on https://ipconf.se

hobby programming

Max Kiosks

Engineer

Created deployment and configuration for Max restaurant kiosks

professional deployment

Details

SOAR

Engineer

Installed and configured IBM SOAR for an internal and external monitoring environment.

professional setup deployment configuration

Kubernetes

Engineer

Setup and managed a lightweight kubernetes environment

professional deployment

Recent Posts

NextCloud rescue admin permissions

While migrating my local users to oidc I accidentally removed admin privileges on the built-in admin user… This made continuing the migration difficult since i was unable to access the admin features of NextCloud. Here’s a short description of how I rescued my privileges. To give your user admin privileges you have to edit the NextCloud database. If you are running the NextCloud AIO you can access the database using the following command.

Sunday, January 7, 2024 Read

Migrate NextCloud AIO data directory

When I faced the issue of migrating the storage directory for my AIO NextCloud the official README sent me to a github discussion whit a somewhat vague answer on how to perform the migration. I thought i would document the process for future reference and if this helps someone else perform a migration like this, that’s a nice bonus. Pre migration tasks Before performing any big changes like this you should backup everything.

Sunday, January 7, 2024 Read

Introduction

Hello and welcome to my new site. I’ve decided that it is time to unifi all my things somewhere and this seems like a nice place to do it.

Sunday, May 21, 2023 Read