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After attending the afternoon ICANN Security & Stability Committee meeting, I realized that the issues involved fall into several related but independent dimensions. Shy person that I am *Cough*, I have opinions in all, but I think it's worthwhile simply to be able to explain the Big Picture to media and other folks that aren't immersed in our field. In these notes, I'm trying to maintain neutrality about the issues. I do have strong opinions about most, but I'll post those separately, often dealing with one issue at a time. more
Are file inclusion vulnerabilitiess equivalent to remote code execution? Are servers (both Linux and Windows) now the lower hanging fruit rather than desktop systems? In the February edition of the Virus Bulletin magazine, we (Kfir Damari, Noam Rathaus and Gadi Evron (me) of Beyond Security) wrote an article on cross platform web server malware and their massive use as botnets, spam bots and generally as attack platforms. Web security papers deal mostly with secure coding and application security. In this paper we describe how these are taken to the next level with live attacks and operational problems service providers deal with daily. more
NANOG 69 was held in Washington DC in early February. Here are my notes from the meeting. It would not be Washington without a keynote opening talk about the broader political landscape, and NANOG certainly ticked this box with a talk on international politics and cyberspace. I did learn a new term, "kinetic warfare," though I'm not sure if I will ever have an opportunity to use it again! more
Millions of email warnings were sent out by Marriot on Friday to warn customers about the massive data breach which has affected close to half a billion guest data. more
Neil Schwartzman writes to report: "The company announced the Yahoo! Mail Anti-Phishing Platform (YMAP) yesterday. The technology is predicated upon the use of both DKIM and Sender Policy Framework (SPF) to identify authentic messages. As part of the initiative, Yahoo! has partnered with email authenticators Authentication Metrics, eCert, Return Path, and Truedomain to provide broad-band coverage of well-known brands." more
Paul observed that most new domain names are malicious. Are they? Since the "dawn of tasting", some 30 million domain names have been created for the purposes of interposition on existing name to resource mappings. That is a third of the .COM historical growth, and mostly in the last five years. ... It is difficult not to conclude that interposition on persistent, public referents is without malice, and that the malicious parties are advertisers seeking to transform public referents into private property, as promotional devices... more
Denial of service attacks have been around since the Internet was commercialized and some of the largest attacks ever launched relied on DNS, making headlines. But every day a barrage of smaller DNS-based attacks take down targets and severely stress the DNS ecosystem. Although DNS servers are not usually the target of attacks they are often disrupted so attention from operation teams is required. There is no indication the problem is going away and attackers continue to innovate. more
As G20 leaders from around the world gather this week, Germany wants them to agree to a concrete plan -- one that includes affordable Internet access across the world by 2025, common technical standards and a focus on digital learning. Today, the G20 economies, like so many other economies around the world, are digital and interconnected. Digital services have opened up new avenues for sustainable economic growth. more
Unlike traditional attacks by hackers which breach a business's security systems, resulting in defaced websites, intellectual property theft and/or customer data theft, a DDoS attack focuses on making a business's Internet connected infrastructure (e.g. web servers, email servers, database servers, FTP servers, APIs, etc.) unavailable to legitimate users. A business's brand reputation, which can take years to establish, can be swept away in just a few hours from a single DDoS attack in the same way a natural disaster like a flood or earthquake can impact a traditional brick and mortar business. more
The capabilities IPv6 provides will enhance online security, but the shift to the new Internet address scheme may also present risks if not properly managed. Previously, Internet security was largely an after-thought for the early Internet, as its primary purpose was to facilitate open, end-to-end, any-to-any communications and information exchange for bridging and accelerating research efforts. Today, we have a much more complex online ecosystem that spans billions of users across the globe and serves not only as an engine for e-commerce, but as an engine for all commerce. more
In this multipart series I will be presenting some of the leading industry-standard best practices for enterprise network security using Cisco technologies. Each article in the series will cover a different aspect of security technologies and designs and how each can be deployed in the enterprise to provide the best security posture at the lowest possible budgetary and administrative cost. In Part 2 of this series I discussed security risks and vulnerability. In this article we begin to focus on the role Cisco network and security technologies play in ensuring the safety and security of network data. more
Monika Ermert reporting in the IP Watch: "On the eve of the third internet-related Ministerial Meeting of the Organisation for Economic Development and Cooperation (OECD) starting tomorrow in Cancun, Mexico, the Global Commission on Internet Governance (GCIG) published a think report on 'One Internet.' Calling for a new 'social compact' for the internet, the 140-page report that was fed by 50 research studies has a number of well-known recommendations, some surprisingly technical and some interesting ones." more
Distributed Denial of Service is a big deal -- huge pools of Internet of Things (IoT) devices, such as security cameras, are compromised by botnets and being used for large scale DDoS attacks. What are the tools in hand to fend these attacks off? The first misconception is that you can actually fend off a DDoS attack. There is no magical tool you can deploy that will allow you to go to sleep every night thinking, "tonight my network will not be impacted by a DDoS attack." more
Our systems are protected by state of the art security systems. Our SPAM filter is a hardware device that is nearly 100% effective. It also helps in protecting against Spyware and other malicious code. Our Firewall is similar to those you would find in large corporations. Our Anti-Virus system has served us well and we've not had problems with virus for years. ...Two weeks ago, I received approximately twenty e-mails requesting the review and approval of Defending The Net articles published on other sites. I thoroughly review the e-mails to make sure they seem legitimate... more
The October 21 DDoS attacks against the 13 root-name servers containing the master domain list for the Internet's Domain Name System (DNS), (which reportedly took offline 9 of the 13 servers) remain a clear and daunting reminder of the vulnerabilities associated with online security. Many DNS authorities have named the most recent hit the largest DDoS attack against the root server system. Chris Morrow, network security engineer for UUNET, the service provider for two of the world's 13 root servers, recently told The Washington Post... more
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