I was very pleased to give my presentation on race condition vulnerabilities in web applications at this year’s HITB conference in Singapore. The talks with the participants, the other presentations, the organisation, everything was very well done and I was able to exchange ideas with the security community in Singapore and internationally.The people, the city and the food are amazing.Many…
Leave a CommentCategory: AppSec
In the past two weeks some news articles about “data breaches” affecting Clubouse, LinkedIn and Facebook have been shared. I’d like to add my two cents on two points that keep coming up and clarify the following. Scraping is not a crime Scraping is not a data leakage Scraping is not a crime The first time I read about scraping…
Leave a Comment
This week security researcher Laxman Muthiyah published his bugbounty write-up “How I Might Have Hacked Any Microsoft Account“. For his finding, he was paid a bugbounty of $50,000 by Microsoft. The researcher describes a vulnerability that theoretically can be used to bypass a rate limit which results in brute-forcing a code. Theoretically, a 6-digit code (1 million necessary attempts) can…
Leave a CommentThis month I passed the (ISC)² Certified Secure Software Lifecycle Professional (CSSLP) exam. As I have been studying with the new version revised in late 2020 and have taken the revised exam, I would like to share my experience with you. My previous security certifications were always practically applied certifications, for example for pentesting. For me, the CSSLP was the…
7 Comments
After 3 months of good preparation I passed a challenging GIAC Certification for the GXPN – GIAC Exploit Researcher and Advanced Penetration Tester. The highlights for me were to learn and really understand how to defeat Windows and Linux stack protection, find common mistakes in cryptography implementation and in general to create and customize the tools to make them work…
2 Comments
Since Kali Linux is not available as an app in the Microsoft App Store, the installation as subsystem requires to run a few commands. 1. First, the subsystem feature must be activated via PowerShell (if not already activated). Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux 2. Kali Linux is downloaded as an AppX file. We can find a file that is always up…
Leave a Comment
This article is about installing Sqreen on the hosting and web server management system Plesk. Sqreen is a Web-Application-Firewall (WAF) and Runtime-Application-Self-Protection (RASP) solution. Sqreen is easy to install and works out of the box. The onboarding process guides you very well step-by-step through the whole setup and while setting up your first application you learn about each config. This…
Leave a Comment
WordPress ist das weit verbreitetste CMS überhaupt. Doch nach der ersten Betriebsnahme denken die meisten nicht weiter an die Sicherheit. Deshalb sind Schwachstellen in WordPress besonders lukrativ. Veraltete Versionen, für welche öffentliche Schwachstellen bekannt sind, werden durch sogenannte Crawler und Bots erkannt und angegriffen. Dies passiert meist vollautomatisch. Oft ist das Ziel dieser automatisierten Angriffe das CMS dazu zu missbrauchen,…
1 Comment
For WordPress there are very comprehensive scanning tools like WPScan. Unfortunately it is not quite the same with the CMS TYPO3. Typo3 describes in its Security Guideline detailed measures to secure the Typo3 instance. Beside the use of secure passwords, always current versions etc. there is also a great area about permissions and access restriction. Let’s hope people are following…
Leave a Comment
I installed the Pi-hole on a Raspberry Pi. Pi-hole is a DNS server for your home network. I have it running on a Raspberry Pi 1, so it’s nice to have a use for my old Raspberry here. It also runs on a Raspberry Zero. Pi-hole is a DNS sinkhole (/blackhole) and is used to block unwanted domains without installing…
2 Comments