Hello everyone! In this episode, I want to talk about Microsoft Defender for Endpoint. It’s not a well-known free Defender antivirus built in Windows 10, but an enterprise level solution with the similar name. Yes, the naming is pretty confusing.
I will not repeat Microsoft’s marketing thesis. Just the basic idea. The Windows endpoints on your network have built-in agents that can send some data to the Microsoft cloud. In the cloud, they process this data into security events. Users can see these events in the web interface on the Microsoft website.
I recently figured out how to work with Microsoft Active Directory using Python 3. I wanted to get a hierarchy of Organizational Units (OUs) and all the network hosts associated with these OUs to search for possible anomalies. If you are not familiar with AD, here is a good thread about the difference between AD Group and OU.
It seems much easier to solve such tasks using PowerShell. But it will probably require a Windows server. So I leave this for the worst scenario. 🙂 There is also a PowerShell Core, which should support Linux, but I haven’t tried it yet. If you want to use Python, there is a choice from the native python ldap3 module and Python-ldap, which is a wrapper for the OpenLDAP client. I didn’t find any interesting high-level functions in Python-ldap and finally decided to use ldap3.
On March 29, I held one hour master class “HOW to avoid excessive formalism in Vulnerability Management process” at Code IB Profi 2019. Everything went quite well and I’ve got 88% positive ratings. Not bad result ^_^.
The main feature of the conference was a very special audience. The only way to visit this event was to buy a real ticket (there were no promotional codes, invites, free tickets from sponsors, etc.). So, the people who came were really interested in the content. Target audience: CISO, their deputies, leading experts from all industries. The whole event was up to 200 people, it lasted for 2 days with 4 threads of masterclasses.
This year organizers decided that titles of all masterclasses should start with “How to” (to keep them practical) and there should be checklists for each masterclass as a handout. I am going to translate my checklist Into English and publish it in this blog soon.
In fact, there were 2 masterclasses on Vulnerability Management at the conference! The second was held by Lev Paley. However, our content did not intersect: I spoke mostly about technical stuff (and I criticized VM vendors as usual), and he spoke mainly about the organizational part and high-level processes.
When people ask me how should they start building Vulnerability Management process in their organization (well, sometimes it happens), I advice them to create an effective Asset Management process first. Because it’s the foundation of the whole Infrastructure Security.
The term “Asset Management” has different meanings and if you start to google it, you will get some results related mainly to finance sphere. I use this term as Qualys and Tenable. For me Asset Management is the process of dealing with network hosts.
So, what should you do in situation described in the tweet above, when you don’t know exactly how many Windows hosts you have in your corporate IT environment? And, more importantly, why do you need to know?
I have recently worked with NetBox – an open source IP address management (IPAM) and data center infrastructure management (DCIM) solution developed by well-known cloud hosting provider DigitalOcean.
It’s not really about security, not even a CMDB. But, security team still might be interested in NetBox, because it makes possible to track the hosts in some critical subnet without active scanning, providing great visibility of assets. Here I will show a small example of NetBox API usage.
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