You may have seen media reports a few weeks ago describing how servers behind the so-called Great Firewall of China were found delivering incorrect DNS information to users in the rest of the world, thereby redirecting users to edited Web pages. Reports indicate that this apparently occurred due to a caching error by a single Internet Service Provider. While the problem was fairly limited in scope, it could have entirely been prevented in a world where DNSSEC was fully deployed. more
Domain name registries and registrars play a critical role in the functioning of the internet, serving as gatekeepers to the DNS. As such, they have an important responsibility to ensure the security and stability of the DNS but also to promote the use of a domain name in a meaningful way for the end user. To be more efficient in achieving these goals, the domain name industry has started to become more open to the idea of leveraging their own internal data to gain insights about their current business. more
It's been nearly two months since the high profile BGP hijack attack against MyEtherwallet, where crypto thieves used BGP leaks to hijack MEW's name servers, which were on Amazon's Route53, and inserted their own fake name servers which directed victims to their own fake wallet site, thereby draining some people's wallets. It generated a lot of discussion at the time... What isn't fully appreciated is that attack has, in fact, changed the game somewhat... more
As a strong proponent of the private right of action for all Internet endpoints and users, I've long been aware of the costs in complexity and chaos of any kind of "blocking" that deliberately keeps something from working. I saw this as a founder at MAPS back in 1997 or so when we created the first RBL to put some distributed controls in place to prevent the transmission of unwanted e-mail from low reputation Internet addresses. What we saw was that in addition to the expected costs (to spammers) and benefits (to victims) of this new technology there were unintended costs to system and network operators whose diagnostic and repair work for problems related to e-mail delivery was made more complex because of the new consideration for every trouble ticket: "was this e-mail message blocked or on purpose?" more
As outlined in CSC's recent 2020 Domain Security Report: Forbes Global 2000 Companies, cybercriminals are disrupting organizations by attacking the protocol responsible for their online presence -- their domain name system (DNS). When a DNS is overwhelmed with traffic due to a distributed denial of service (DDoS) attack or configuration error, content and applications become inaccessible to users, affecting both revenue and reputation. more
I have previously pointed out the shortcomings of good and user friendly support for DNSSEC in Microsoft's Server 2008 R2. During the period just after I wrote the post, I had a dialogue with Microsoft, but during the last months there has been no word at all. The reason I bring this up again is that more and more Top Level Domains (TLDs) now enable DNSSEC and also the fact that within six months the root will be signed. more
I've been privately talking about the theoretical dangers of HTTPS hacking with the developers of a major web browser since 2006 and earlier last month, I published my warnings about HTTPS web hacking along with a proposed solution. A week later, Google partially implemented some of my recommendations in an early Alpha version of their Chrome 2.0 browser... This week at the Black Hat security conference in Washington DC, Moxie Marlinspike released a tool called SSL Strip... more
A recent survey conducted by the Neustar International Security Council confirmed the heightened interests on domain name system (DNS) security. The survey reveals that over three-quarters of cybersecurity professionals anticipate increases in DNS attacks, especially with more people shopping online amid the pandemic. Yet, close to 30% have reservations about their ability to respond to these attacks. more
A group of leading domain name registries and registrars have joined forces in the fight against abuse in the Domain Name System (DNS), by developing a "Framework to Address Abuse." Each contributing company has shared its expertise and experience mitigating abusive practices with the goal of submitting the resulting Framework as a foundational document for further discussion in the multistakeholder community. more
Most people, even seasoned IT professionals, don't give DNS (the Domain Name System) the attention it deserves. As TCP/IP has become the dominant networking protocol, so has the use of DNS... Due to the reliability built into the fundamental RFC-based design of DNS, most IT professionals don't spend much time worrying about it. This can be a huge mistake! more
The Domain Name System (DNS) offers ways to significantly strengthen the security of Internet applications via a new protocol called the DNS-based Authentication of Named Entities (DANE). One problem it helps to solve is how to easily find keys for end users and systems in a secure and scalable manner. It can also help to address well-known vulnerabilities in the public Certification Authority (CA) model. Applications today need to trust a large number of global CAs. more
Seems that DNSSEC is being subjected to what an old boss of mine used to call the "fatal flaw seeking missiles" which try to explain the technical reasons that DNSSEC is not being implemented. First it was zone walking, then the complexity of Proof of Non-Existence (PNE), next week ... one shudders to think. While there is still some modest technical work outstanding on DNSSEC, NSEC3 and the mechanics of key rollover being examples, that work, of itself, does not explain the stunning lack of implementation or aggressive planning being undertaken within the DNS community. more
The DNSSEC is a security protocol for providing cryptographic assurance (i.e. using the public key cryptography digital signature technology) to the data retrieved from the DNS distributed database (RFC4033). DNSSEC deployment at the root is said to be subject to politics, but there is seldom detailed discussion about this "DNS root signing" politics. Actually, DNSSEC deployment requires more than signing the DNS root zone data; it also involves secure delegations from the root to the TLDs, and DNSSEC deployment by TLD administrations (I omit other participants involvement as my focus is policy around the DNS root). There is a dose of naivety in the idea of detailing the political aspects of the DNS root, but I volunteer! My perspective is an interested observer. more
In a video interview conducted during the NSCS ONE conference, Paul Vixie CEO of Farsight Security further discusses the topic of his presentation titled: "Defective by Design -- How the Internet's Openness is Slowly Poisoning Us". more
I'm interested in CircleID community's take on NeuStar's recent announcement of Cache Defender. While only effective for domains the company is authoritative for, that does cover a large number of big Internet brands and financial institutions. Why wouldn't an ISP deploy this now, while waiting for all the myriad issues involved in DNSSEC to be resolved? more
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