General blog posts

[0x9] New DFIR-FI site

By whois

June 20, 2024 | One minute read

New year, new site

I have decided to merge my old sites blog.dfir.fi and dfir.fi into one page. I will also be posting about the DFIR-FI community, news about my new training courses, maintaining my CV, and promoting my services on this site.

Collaboration

At the same time as I launch the new site, I will also offer others the opportunity to post information on the site, both through the promotion of their company’s DFIR services and trainings and through blog posts. I look forward to hearing from anyone who would like to write about their DFIR research, malware, training experiences or any training-related blog posts on this site.

[0x7] Migration to Github

By whois

September 23, 2021 | One minute read

I’ve decided to change my blog from self-hosted jekyll site to auto deployed Github hugo page.

Because of this, my blog’s RSS feed will also change. You can find the new RSS link from footer.

I will likely release more but less structured content on this blog in the future.

blog.dfir.fi CNAME will soon point to https://who1s.github.io

[0x3] Disobey 2020 puzzle writeup

By whois

December 23, 2019 | 20 min read

Disobey is a Finnish hacker/cyber security conference. They release every year a hacker challenge and 50 first who solve it, get to buy the special “hacker ticket” with a cheaper price than a regular ticket. The badge that comes with the ticket is also visually different looking than a normal ticket. At the first I have to admit, this year the challenge was harder than in previous years. This was my third time I tried to do the challenge and the third time I managed to solve it. As the challenge started at the same weekend as Assembly LAN party was held, we decided to give it a try together with Dist and Jaroneko as a team. There’s probably multiple different ways to solve it but here’s my take with some arguments why I did what I did. Hope you enjoy the read and even learn something from it!

[0x1] SANS 2019 & BSides Orlando

By whois

April 18, 2019 | 6 min read

Few weeks ago I left cold Finland and headed to Orlando to attend SANS FOR610 (Reverse-Engineering Malware). After signing up and buying flight tickets, I noticed that BSides Orlando was held just few days before the course started. I though “What the hell” and bought a ticket to that event as well. BSides is Disobey (Finnish hacking/cyber security event) like event and has talks, workshops, CTF, soldering station etc…

[0x0] Hello World!

By whois

April 14, 2019 | One minute read

I decided to start blogging because

1. I suck at remembering stuff -> If I write it publicly down, I will most likely remember it
2. There’s no DFIR blogs in Finland (at least I don’t know of them)
3. There’s never too many projects, right?

My bio can be found on about-page