Zeek Blog
Bro Monthly #3
Bro Monthly #3 Welcome to the 3rd Bro Monthly newsletter. This month we cover the following topics: Bro Meet-ups: a new monthly category for Bro related gatherings and groups, Bro teaching and training, Bro in research, Bro in the wild, Bro-active: current exploits,...
Using Bro to Build a Passive DNS Database
Searching DNS logs became a lot faster with the launch of our Passive DNS tool for Bro. It uses Bro's DNS logs to build a database that is more compact, and therefore a lot easier to search. See how we did it by checking it out on GitHub.
Bro Monthly #2
Bro Monthly #2Welcome to the 2nd Bro Monthly newsletter. This month we cover the followoing topics: Bro won a Bossie, Bro.org needs help, the Shellshock incident, new features in the Intel framework, news on BinPAC++, Bro in research, Bro in the wild, Bro on demand....
Bro Monthly #1
Bro MonthlyWelcome to the 1st Bro Monthly, our new monthly newsletter covering the latest developments in the Bro universe. This newsletter will appear every month, around the 15th, as a Bro blog post. Please send feedback, wishes, and suggestions to info@bro.org or...
Announcing Bro Live!
We are excited to announce the public release of Bro Live! Bro Live! is a training system that gives users hands-on access to a Bro learning environment without having to download a virtual machine or its required dependencies. Bro Live! may be built with...
Bro and Chrome’s Sunsetting of SHA-1
A few days ago, Google announced their plans for sunsetting certificates using the SHA-1 hash algorithm in the near future. Google does not think SHA-1 certificates should be considered secure in the future anymore as collision attacks against SHA-1 get more...
Bro 2.3.1 Release
Bro v2.3.1 has been released. This release addresses a potential DOS vector using specially crafted DNS packets. It also fixes a bug in the OCSP validation code that could lead to crashes as well as a memory leak. The source distribution and binary...
Announcing Try.bro
We are very excited to announce the official launch of Try.bro.org! Try.bro is a web-based scripting sandbox made freely available to users on our site. No login. No installation. No trouble. We have included a few basic scripts and pcaps to help get...
Meet the Bro Teaching Community
We are happy to announce the newly started Bro Teaching Community, a community project of educators interested in collaboratively exploring Bro's use as a teaching tool, and sharing experiences and material. The goal is to create a knowledge base and resource...
Bro 2.3 Release
We are happy to announce the release of Bro v2.3. The source distribution and binary packages are available on our downloads page. For a brief overview of new features and bug fixes you may review our previous blog post about the v2.3 beta....
Bro 2.3 Public Beta
We are happy to announce the public beta of Bro v2.3 is available for download! The majority of our development time has been focused on improving performance, reliability, and memory use. Here is a brief summary of the new features and improvements: Support for GRE...
Detecting the heartbleed bug using Bro
Update: The heartbleed detector is now part of bro master. You should switch if you are still using the development branch. You still have to load policy/protocols/ssl/heartbleed.bro We just added support to Bro to detect the recent heartbleed attack on...
Dissecting the GnuTLS Bug
Update: we now host a test server at gnutls.notary.icsi.berkeley.edu. See gnutls command lines below. The recent GnuTLS certificate verification bug made it possible to craft an arbitrary certificate in a way that GnuTLS would validate correctly against a...
Intelligence Data and Bro
Overview Intelligence data, or feeds, are an important source of network security information. Many internet security research centers, non-profit organizations, and commercial organizations provide intellegence data sets freely available to the public. (e.g. Emerging...
Bro 2.2
Bro 2.2 has arrived. You can download the source distribution on our download page; binary packages will follow soon. For an overview of the major new features in 2.2, please see the earlier posting on the beta version. Since that beta, we have applied a range of...
NSF Funds Bro Center of Expertise
We have some very exciting news to share today. The National Science Foundation (NSF) has awarded a new three-year grant to our team to establish a Bro Center of Expertise at ICSI and NCSA for supporting the NSF community in deploying Bro. The Center will provide the...
Bro 2.2 Beta Available
It has been baking for a while, but now fresh out of the oven: we're happy to make a beta version of Bro 2.2 available on the download page for testing. Bro 2.2 comes with plenty new functionality, including a new file analysis framework for processing the content of...
Bug Tracker Migration
The Bro bug/issue tracker at http://tracker.bro.org has been migrated from Trac to a JIRA instance hosted by Atlassian (you'll notice the former URL now redirects to https://bro-tracker.atlassian.net). A couple new things that JIRA facilitates and may be...
Results from our Deployment Survey
Earlier we asked the Bro community to fill out a short survey aimed at better understanding today's state of Bro deployments. We got 103 replies, with the results below. Many thanks to all the sites who responded, this is really helpful for us.
Meet Broala, LLC
Today we're delighted to introduce a new venture that we've been preparing in the background for a little while already: the International Computer Science Institute (ICSI) is spinning off a company, Broala, that provides professional Bro services to organizations...
New Research Grant On Security of Industrial Control Systems
We're excited to announce a new research grant on Semantic Security Monitoring for Industrial Control Systems that the National Science Foundation has awarded to a team of researchers at the International Computer Science Institute (ICSI), the National Center...
Announcing Bro Exchange 2013 and Requesting Talks
I’m happy to announce the Bro Exchange for 2013 is a go! Our Bro Exchanges aim to get a large number Bro users together into the same room to share experiences and talk about how everyone is using Bro. This time, we’ll also add in a bit of training similar to...
Help Us Demonstrate Bro’s Impact: Deployment Survey
[Update: The survey is now closed.] In 2010, the Bro Team received a grant from the National Science Foundation (NSF) to advance the state of the system, with a particular focus on making Bro more easy to deploy. Much of the work on Bro 2.x has been (and still is)...
On Bro’s License, Name, and Logo
We are very excited to see all the interest that Bro has been generating recently, with many new deployments across networks of all sizes and people working to interface the system to their environments and hardware. Occasionally, however, we also notice a bit of...
Using ICSI’s Open-Source Bro Platform to Protect the Blue Waters Supercomputer
The ICSI web site features a guest posting by Adam Slagell and the Bro Team on Using ICSI's Open-Source Bro Platform to Protect the Blue Waters Supercomputer.
bro.org — A New Home for Bro
We are very excited to announce that as of today all Bro-related services have found a new home under the bro.org domain. We've moved most services over from bro-ids.org already, and the remaining pieces should fall in place over the next couple of days. Generally,...
Watching for the APT1 Intelligence
Earlier this week, Mandiant released their APT1 report which I’m not going to bother providing any analysis or commentary on, there has been plenty of that this week. As a developer on a network analysis tool my interest primarily lies with consuming the...
Bro Summer Internship Available
The Bro Project has an opening for a three month summer internship. If you are interested in helping us improve Bro and develop new functionality, please apply! See here for more information.
Searching the ICSI Notary for Rogue Turktrust Intermediate Certificates
Turktrust, a Certificate Authority (CA) that is trusted by all major browsers and systems accidentally issued intermediate CA certificates instead of end-host certificates to two of its clients. Both of these intermediates were valid and signed by the Turktrust root,...
The Tree of Trust
As we mentioned in our preceding blog posting, ICSI has been harvesting details about SSL connections and their contained certificates since the beginning of this year.We use the data to provide a notary service to the community, which can be used to retrieve...
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