Category: Logs Management / SIEM
Are You Playing “Cold Case” with Your Logs?
Two days ago, I attended an event about “big data” (yeah, another buzz word) and how to use it for security purposes. One of the presented talks was very interesting and almost changed my mind about our best friends (or nightmare)… logs! When I’m talking about log management with customers,
Howto: Distributed Splunk Architecture
Implementing a good log management solution is not an easy task! If your organisation decides (should I add “finally“?) to deploy “tools” to manage your huge amount of logs, it’s a very good step forward but it must be properly addressed. Devices and applications have plenty of ways to generate
Attackers Geolocation in OSSEC
If you follow my blog on a regularly basis, you probably already know that I’m a big fan of OSSEC. I’m using it to monitor all my personal systems (servers, labs, websites, etc). Being a day-to-day user, I have always new ideas to extend the product , by using 3rd
Monitor your Monitoring Tools
We (and I’m fully part of it) deploy and use plenty of security monitoring tools daily. As our beloved data is often spread across complex infrastructures or simply across multiple physical locations, we have to collect interesting information and bring them in a central place for further analysis. That’s called
The value of HTTP 404 Errors
The HTTP protocol has a list of response status codes to help communication between the server and the browser. Everytime a server responds to a browser request, a status code is sent. The most common ones are: “200” which means “Everything is ok, here is some food!” and “404” which
Ranking People Like Domains or IP Addresses?
Real time events or network traffic analysis is interesting to track suspicious behaviors. And, if you add some external sources of information, you could increase even more the capability of detecting real events. Such ranking sources applies usually to IP addresses and domain names. They are plenty of online resources
Tracking Tweets in your SIEM
My previous post about monitoring pastebin.com within your SIEM gave ideas to some of you. On aftershell.com, you will find a fork of my script to monitor WordPress RSS feeds. If pastebin.com may contain relevant piece of information as well as blogs, do not underestimate the value of social networks!
Vulnerability Management: OSSEC & Secunia PSI
“Vulnerability Management“… This is an important topic for your corporate security. One of the steps in this process is the monitoring of your applications and operating systems. With hundreds (thousands?) of devices connected to your network, how to keep an eye on the applications and patches installed on all of
Detecting Defaced Websites with OSSEC
In the scope of the OSSEC Week, here is a quick contribution which can greatly help you to monitor suspicious changes on a website. Today, your corporate website is the very first contact you have with your customers, partners, press, etc. It’s your window to the world. Nobody can pretend