Today Twitter (and Facebook) have been targeted by a Distributed Denial Of Service attack (DDOS). There are several techniques to mitigate a DDOS but I'm interested by one: the IP black-listing that can be address by both Security Event Management and Network Configuration and Change Management solutions.
This short presentation describe how SEM and SCM work together to mitigate DDOS.
It’s usually not easy to explain people how log injection attacks are used to decoy a weak log management system. I see in this video an example of what this kind of attack can be in the real world.
This crew creates the illusion of an escape attempt that may divert security guard attention. In the Log Management world this kind of “attack” is called Log Injection: invalid entries taken from user input are inserted in logs that monitoring systems will misinterpret. This trick allows an attacker to mislead detection engine or administrators and covers his traces.
Fake logs can be created using simple log injection techniques that work in the same way as SQL injection. In this example, I just pass the user name in a way that would trick a log analysis tool, making it thinking that the source IP of the connection is not what it really is:
[chris@host log]$ ssh "myfakeuser from 10.1.1.1 port 123 ssh2" @192.168.5.1
Logs on the SSH server look likes that:
Aug 5 14:54:00 host sshd[5870]: Invalid user myfakeuser from 10.1.1.1 port 123 ssh2 from 192.168.50.65
Aug 5 14:54:03 host sshd[5870]: Failed password for invalid user myfakeuser from 10.1.1.1 port 123 ssh2 from 192.168.50.65 port 34813 ssh2
The attacker faked the username and the source IP address to trick the security analyst and to hide his own activity. The usage of an advanced Log Management solution will prevent this kind of attack, actually it should be able to recognized misformatted logs.
This presentation in an introduction to LogLogic Security Event Manager. It includes 5 screencasts describing correlation, incident management and reporting capabilities.
[French] Great presentation about lastest Phishing Facebook Attacks, I know in my circle of friend at least 10 members of these "fun" Facebook groups!