Open in app

Sign In

Write

Sign In

Pepijn Vissers
Pepijn Vissers

17 Followers

Home

About

Sep 24, 2022

#IRanASignalProxy

Setting up a Signal proxy on your own VPS. So, with all kinds of shit happening all over the world, Signal has started a campaign to urge people to run their own Signal Proxy — preferably on a unconspicuous webserver. …

Censorship

5 min read

#IRanASignalProxy
#IRanASignalProxy
Censorship

5 min read


Published in

Chapter8

·Mar 12, 2022

Plant a tree. Now.

Geopolitics and the state of cyber. “The best time to plant a tree was 20 years ago. The second best time is now.” — Chinese proverb. Hello dear readers, Although our next blog was supposed to be a short pun article on the importance of offensive forward security and training…

Cybersecurity

7 min read

Plant a tree. Now.
Plant a tree. Now.
Cybersecurity

7 min read


Published in

Chapter8

·Feb 4, 2022

Advanced Purple Teaming

The what, why, when, where and how. Part one: the what. Hi there, dear readers. You got the APT-joke in the title, right? Good! In this small blog post series, I’ll take you through a virtual Purple Team Mission from early start to aftercare. The way most people know about…

Cybersecurity

6 min read

Advanced Purple Teaming
Advanced Purple Teaming
Cybersecurity

6 min read


Published in

Chapter8

·Jan 22, 2022

Adding our own Kill Chain to VECTR

…because the industry standards do not always suffice. TL;DR: we added our own Time Phased Kill Chain to VECTR to be able to report attack paths and detection results in the order that they actually took place. …

Cybersecurity

11 min read

Adding our own Kill Chain to VECTR
Adding our own Kill Chain to VECTR
Cybersecurity

11 min read


Published in

Chapter8

·Nov 30, 2021

Five Purple Christmas Gifts

…because we all love Christmas lists! 2021 was a great year for us. On the very first day, Crypt0jan and I welcomed Cyb3rt as the Hunter of our Purple Team and shortly after, we started a Mission in one of the most protected areas of the Netherlands. …

Cybersecurity

5 min read

Five Purple Christmas Gifts
Five Purple Christmas Gifts
Cybersecurity

5 min read


Aug 26, 2021

Patching Intel’s Linux SFP+ driver for …

…well, to make things work, honestly. Not for fun nor profit. TL;DR: Intel’s ixgbe-driver sees our Finisar 10Gb SPF+ cards as 1Gb, and therefor loading these drivers will fail. But this patch by Crypt0jan will make them work and spare you his headaches, anger and frustration. You’re welcome. Tested with: …

Hacking

3 min read

Patching Intel’s SFP+ driver for …
Patching Intel’s SFP+ driver for …
Hacking

3 min read


Published in

Chapter8

·Aug 26, 2020

False memories — chasing cryptominers through Redis.

TL;DR: secure your infrastructure. Open Redis servers are being abused by cybercriminals to store shell commands in your memory. Also, the underlying problem is not new. 1 — open mind Chapter8 gathers cyber intelligence through several sources, some of which scan the internet for openly accessible services. …

Offensive Security

7 min read

False memories — chasing cryptominers through Redis.
False memories — chasing cryptominers through Redis.
Offensive Security

7 min read


Published in

Chapter8

·Jul 24, 2020

Hoe train je voor een digitaal straatgevecht?

Goede training is intensief. Volgens de regels van de sport, met respect maar hard. Training bereidt je voor op een gevecht onder gecontroleerde omstandigheden, tussen gelijkwaardige tegenstanders. Een digitale aanval is een smerig straatgevecht. Geen keurige wedstrijd met lijntjes op een veld, een scheidsrechter en een paar gekleurde kaarten. Op…

Cybersecurity

5 min read

Hoe train je voor een digitaal straatgevecht?
Hoe train je voor een digitaal straatgevecht?
Cybersecurity

5 min read


Published in

Chapter8

·Jun 9, 2020

Artisanship in Cyber Security

Craftsmen, guilds and doing things by hand are commonly associated with classic professions. If one started out as a carpenter or a blacksmith, it would take years to become an artisan, learning on the job. …

Cybersecurity

6 min read

Artisanship in Cyber Security
Artisanship in Cyber Security
Cybersecurity

6 min read

Pepijn Vissers

Pepijn Vissers

17 Followers

Healer // Co-founder @ Chapter8.com

Following
  • Gijs Hollestelle

    Gijs Hollestelle

  • Cyb3rt

    Cyb3rt

  • Chapter8

    Chapter8

  • Crypt0jan

    Crypt0jan

  • Rob Berends

    Rob Berends

See all (10)

Help

Status

Writers

Blog

Careers

Privacy

Terms

About

Text to speech