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Building on my last article about Network Assessments, let's take a closer look at vulnerability assessments. (Because entire books have been written on conducting vulnerability assessments, this article is only a high level overview.) What is a vulnerability assessment? more
This post was co-authored by Sarah McKune, a senior researcher at the Citizen Lab. Public attention to the secretive world of cyber espionage has risen to a new level in the wake of the APT1: Exposing One of China's Cyber Espionage Units report by security company Mandiant. By specifically naming China as the culprit and linking cyber espionage efforts to the People's Liberation Army, Mandiant has taken steps that few policymakers have been willing to take publicly, given the significant diplomatic implications. more
As noted in the first part of this series, Security and Reliability encompasses holistic network assessments, vulnerability assessments, and penetration testing. In this post I'd like to go deeper into network assessments. I stated last time that the phrase "network assessment" is broad. more
I co-authored a book in 2005, titled "Extreme Exploits: Advanced Defenses Against Hardcore Hacks." My chapters focused on securing routing protocols such as BGP, and securing systems related to DMZs, firewalls, and network connectivity. As I look back over those chapters, I realize that the basic fundamentals of network security really haven't changed much even though technology has advanced at an incredible pace. "Defense in depth" was a hot catch phrase seven years ago, and it still applies today. more
In the first part of this trilogy, I discussed the importance of automatically provisioned second generation DNS in connection with Software Defined Networking (SDN) and Software Defined Data Centre (SDDC). In the second post, I talked about IP addressing, private enterprise networks, and how DHCP does not meet the requirements of multitenant Infrastructure-as-a-Service (IaaS) cloud environments. I will now wrap up this trilogy by putting these two thesis into real-life context. more
In part 1, I talked about some of the risks associated with BYOD. But there are actions you can take to greatly reduce this risk. One effective method for limiting the risk of BYOD is to employ DNS-based security intelligence techniques. DNS-based security intelligence makes use of an enterprise's caching DNS server to monitor and block DNS queries to known botnet command and control (C&C) domains. more
On January 8, 2013, a Judge from the United States District Court in Texas ruled against a high school sophomore's refusal to wear a smart identity card embedded with a radio frequency chip which is part of the school's smart ID card student locator project. The Judgment show the Testimonies of Superintendent and the Principal in stating that the sensors do not give exact readings nor are they able to pinpoint the exact location of the students. more
On Friday 11 January 2013 the European Cybercrime Centre, EC3, officially opened its doors at Europol in The Hague. If something shone through from the speeches of the panel participants, it is that there are tight budget restraints and a strong wish to cooperate with the U.S., the Interpol centre in Singapore and Russia. Let me share my thoughts on expectations. more
Here are the top ten most popular news, blogs, and industry updates featured on CircleID during 2012 based on the overall readership of the posts for the past 12 months. Congratulations to all the participants whose posts reached top readership and best wishes to the entire community for 2013. more
In general, a network firewall is just a traffic filter... Filtering rules can be anything from "allow my web server to hear and answer web requests but not other kinds of requests" to "let my users Ping the outside world but do not let outsiders Ping anything on my network." The Internet industry has used firewalls since the mid-1980's and there are now many kinds, from packet layer firewalls to web firewalls to e-mail firewalls. Recently the DNS industry has explored the firewall idea and the results have been quite compelling. In this article I'm going to demonstrate a DNS firewall built using RPZ (Response Policy Zones) and show its potential impact on e-mail "spam". more
Throughout the second half of 2012 many security folks have been asking "how much is a zero-day vulnerability worth?" and it's often been hard to believe the numbers that have been (and continue to be) thrown around. For the sake of clarity though, I do believe that it's the wrong question... the correct question should be "how much do people pay for working exploits against zero-day vulnerabilities?" more
It is midnight in Dubai and I am listening to the final readings of the International Telecommunication Regulations (ITR). This instrument is the final output of two weeks of negotiations at the World Conference on International Telecommunication (WCIT), a gathering of the world's nations to update the the ITRs. The Chair goes through the document article by article, section by section, and with each passing "thank you", this Conference draws to a close. Many in the room are elated. more
Please share this post. After a tragedy, many of us want to donate to funds and charities to show our support for a community. However, scam charities immediately pop up, looking to steal your well intentioned donations. There are at least 30 newly-registered domains over the past 48 hours related to the tragic shootings at the Sandy Hook elementary school in Connecticut: Most, if not all are scams and rip-offs. How then, to donate so that your funds make it to the deserving victims? more
Distributed denial-of-service (DDoS) attacks that targeted U.S. financial institutions this week have reached 60 Gbps, according to researchers from DDoS mitigation provider Arbor Networks. more
Yesterday, in my post on three new threats in one day, I posed the question whether it was necessary to develop regulations that would set a minimum standard on cyber security for devices that connect to the Internet. I'm having second thoughts here, which I'll explain in this post, but also try to look at a way forward and ask you to engage. more
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