Digital Naïve

tl;dr?

I gave a talk about OSM at Fireshonks – one of the online events in place of the CCC’s cancelled annual Chaos Communication Congress.

I gave an overview / introduction talk about OSINT and OPSEC at the CCC’s annual Chaos Communication Congress (rc3 NOWHERE).

A few days ago, I gained admin access to the ERP system of a German-based international online retailer1 operating a number of e-commerce websites.

This is a writeup of this year’s MRMCD CTF challenge “Flag Checker”, which I solved by hand while wondering how to let a computer solve this more elegantly.

Note: This post is a copy of https://paypal.gift.

This is a writeup of this year’s MRMCD CTF challenge “Hatali”, including two different ways to solve the challenge (one of them being unintended by the challenge authors).

I participated in the MRMCD CTF and since they asked for writeups, here comes mine about the ‘Cofefe’ challenge.

I want to ensure no traffic is accidentally bypassing my VPN.