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Security experts say ICANN should address collisions before approving more new TLDs

Kevin Murphy, January 2, 2017, Domain Tech

ICANN’s Security and Stability Advisory Committee has told ICANN it needs to do more to address the problem of name collisions before it approves any more new gTLDs.
In its latest advisory (pdf), published just before Christmas, SSAC says ICANN is not doing enough to coordinate with other technical bodies that are asserting authority over “special use” TlDs.
The SAC090 paper appears to be an attempt to get ICANN to further formalize its relationship with the Internet Engineering Task Force as it pertains to reserved TLDs:

The SSAC recommends that the ICANN Board of Directors take appropriate steps to establish definitive and unambiguous criteria for determining whether or not a syntactically valid domain name label could be a top-level domain name in the global DNS.
…
Pursuant to its finding that lack of adequate coordination among the activities of different groups contributes to domain namespace instability, the SSAC recommends that the ICANN Board of Directors establish effective means of collaboration on these issues with relevant groups outside of ICANN, including the IETF.

The paper speaks to at least two ongoing debates.
First, should ICANN approve .home and .corp?
These two would-be gTLDs were applied for by multiple parties in 2012 but have been on hold since August 2013 following an independent report into name collisions.
Names collisions are generally cases in which ICANN delegates a TLD to the public DNS that is already broadly used on private networks. This clash can result in the leakage of private data.
.home and .corp are by a considerable margin the two strings most likely to be affected by this problem, with .mail also seeing substantial volume.
But in recent months .home and .corp applicants have started to put pressure on ICANN to resolve the issue and release their applications from limbo.
The second incident the SSAC paper speaks to is the reservation in 2015 of .onion
If you’re using a browser on the privacy-enhancing Tor network, .onion domains appear to you to work exactly the same as domains in any other gTLDs, but under the hood they don’t use the public ICANN-overseen DNS.
The IETF gave .onion status as a “Special Use Domain“, in order to prevent future collisions, which caused ICANN to give it the same restricted status as .example, .localhost and .test.
But there was quite a lot of hand-wringing within the IETF before this status was granted, with some worrying that the organization was stepping on ICANN’s authority.
The SSAC paper appears to be designed at least partially to encourage ICANN to figure out how much it should take its lead from the IETF in this respect. It asks:

The IETF is an example of a group outside of ICANN that maintains a list of “special use” names. What should ICANN’s response be to groups outside of ICANN that assert standing for their list of special names?

For members of the new gTLD industry, the SSAC paper may be of particular importance because it raises the possibility of delays to subsequent rounds of the program if ICANN does not spell out more formally how it handles special use TLDs.
“The SSAC recommends that ICANN complete this work before making any decision to add new TLD names to the global DNS,” it says.

Is .home back on ICANN’s new gTLD risk list?

Kevin Murphy, January 13, 2013, Domain Tech

While most new gTLD applicants were focused on delays to the program revealed during last Friday’s ICANN webinar, another bit of news may also be a cause for concern for .home applicants.
As Rubens Kuhl of Nic.br spotted, ICANN revealed that 11 applications have not yet passed their DNS Stability check.
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That’s a reversal from November, when ICANN said that all new gTLD applications had passed the stability review.
As I noted at the time, that was good news for .home, which some say may cause security problems if it is delegated.
As Kuhl observed, there are exactly 11 applications for .home, the same as the number of applications that now appear to have un-passed the DNS Stability check.
So is ICANN taking a closer look at .home, or is it just a numerical coincidence?
The string is considered risky by many because .home already receives a substantial amount of DNS traffic at the root servers, which will be inherited by whichever company wins the contention set.
It’s on a list of frequently requested invalid TLDs produced by ICANN’s Security and Stability Advisory Committee which was incorporated by reference in the new gTLD Applicant Guidebook.
Some major ISPs, notably BT in the UK, use .home as a pseudo-TLD in their residential routers.