Welcome to pqsec.org

Latest posts

Sandboxing in Linux with zero lines of code

8 July 2020

In this post we will review Linux seccomp and learn how to sandbox any (even a proprietary) application without writing a single line of code.

Import Markdown into Medium in 4 clicks

25 May 2020

Or my first web app in 10 years: what could go wrong?

Fixing weak crypto in OpenSSL based applications

13 April 2020

Fixing a proprietary tool, which uses weak cryptography, and learning runtime code patching along the way.

Speeding up Linux disk encryption

25 March 2020

How to double the performance of disk encryption in Linux.

Using Go as a scripting language in Linux

20 February 2018

Why use Go as a scripting language? Short answer: why not? Go is relatively easy to learn, not too verbose and there is a huge ecosystem of libraries which can be reused to avoid writing all the code from scratch.

UBOAT or CVE-2016-3955

19 August 2016

UBOAT is a vulnerability in USB over IP framework, which is part of Linux kernel code. This framework was originally developed by USB/IP project and merged into mainline Linux kernel since version 3.17 and allows hardware to share connected USB devices over IP network: devices, connected to USB/IP server, appear on the client as if they were plugged in locally.