I’m a big fan of Chris Gates’ publications on DevOops and From Low to Pwned. The content reflects a lot of issues that we also experience in many assessments in general and assessments in agile environments in particular. In addition, we were supporting several projects recently that were organized in an agile way. In this post, I want to summarize some thoughts on how security work can/should be integrated into agile projects. The post was also a result from the preparation of our upcoming Troopers workshop on Docker Security & Devops, which of course also covers organizational aspects, but not to the degree this post describes them.Continue reading
I recently had the pleasure to attend two events organized by the Digital Society Institute, one was a workshop on software vulnerabilities and one was their annual conference. For both events I delivered input on the security of security products and their evaluation (slides can be found here). The DSI did a great job of assembling people from various areas (e.g. industry, academia, politics, and research) so there was a lot of input which is not covered by conferences I usually attend. The workshop I attended also resulted in a short policy recommendation when it comes to the security of security products which can be found here.
Thanks & so long,
Today Kevin and I had the pleasure to to present at the German 15. Cyber-Sicherheits-Tag in Berlin which is organized by the Alliance for Cyber Security. This iteration covered security aspects of the Internet of Things and we enjoyed some great conversations. The presentations were limited to ten slides and can be found here:Continue reading
Today it is my pleasure to shortly introduce ERNW’s Capture the Flag team, the Kernel Space Invaders. As a long-time CTF enthusiast, I’m really amazed how many of us make the time to tackle IT security challenges also on the weekends or evenings. Even if we cannot participate in all CTFs out there (which would be challenging anyways given the large number of CTF events happening nowadays), we started to compile a repository of some of our write-ups — I hope some of you will enjoy!
During penetration tests, we often find interesting files on web servers. Almost as often, those files enable us to carry out further attacks with much higher impact. Inspired by Chris Gate’s great series From Low to Pwned, we decided to share the following small piece.Continue reading
Today I had to give the pleasure to give a keynote at the SIGS DC Day on the need to evaluate Cloud Service Providers in a way that looks behind (or at least tries to) security whitepapers and certification reports. The slides can be found here.
I also particularly enjoyed the following two talks:
Sean O’Tool from Swisscom AG covered challenges of an infrastructure to cloud migration. Even though he only briefly touched the topic, I enjoyed his description of their firewalling model: Seeing that centralized firewall operation (or more precisely, rule design and approval) is limited/challenged by the understanding of the application, they transferred control over firewall rule sets (beyond a basic set of infrastructure/ground rules) to the application teams (using of features like OpenStack’s security groups, where he also talked about limitations of those). They compensated the loss of “centralized enforcement by a security group” with rule reviews — an approach that will become way more relevant (and necessary) in the future.
Marc Holitscher from Microsoft covered their “second line of defense”, which is a strong audit framework for controls they implement for their Azure/Office cloud environment. The relevant information (which was new for me too) was that they published a lot of audit information just recently. Details are described here.
Today we started publishing several of our hardening documents to a dedicated GitHub repository — and we’re quite excited about it! It took a while to develop a suitable markdown template to support all the requirements you have when you write a hardening guide, but we’re online now!
At the moment, only a few hardening guides are online, but that should continuously increase in the future.
As presented at Troopers this year, ERP-SEC research has uncovered a set of potential default accounts related to the use of SAP Solution Manager. These default accounts might pose a big risk to your SAP supported business as some of them have wide authorisations. It is therefore important to check if they exist in your landscape and change the default passwords.Continue reading
I gave a presentation on Cloud Security, Compliance & Trust the other day. The basic message was to look beyond the Cloud buzzword and see the actual technologies which are used, understand which security principles still apply and which need to be re-thought, giving a rough direction about regulatory compliance in Cloud environments (which of course is non-binding, as I’m not a lawyer), and the importance of trust evaluations (especially) when it comes to Cloud services.Continue reading