Also U+00DE þaypal.com appears to be registered.

U+00DE cannot be used (it's an uppercase Thorn) while U+00FE can be. 

I'll deal with this along with  bug 793628 . 

https://chromium-review.googlesource.com/c/chromium/src/+/860567 is a CL.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fe3c71592ccc6fd6f3909215e326ffc8fe0c35ce

commit fe3c71592ccc6fd6f3909215e326ffc8fe0c35ce
Author: Jungshik Shin <jshin@chromium.org>
Date: Sat Jan 13 01:11:09 2018

Add more confusable character map entries

When comparing domain names with top 10k domain names for confusability,
characters with diacritics are decomposed into base + diacritic marks
(Unicode Normalization Form D) and diacritics are dropped before
calculating the confusability skeleton because two characters with and
without a diacritics is NOT regarded as confusable.

However, there are a dozen of characters (most of them are Cyrillic)
with a diacritic-like mark attached but they are not decomposed into
base + diacritics by NFD (e.g. U+049B, қ; Cyrillic Small Letter Ka
with Descender).  This CL treats them the same way as their "base"
characters. For instance, қ (U+049B) is treated as confusable with
Latin k because к (U+043A; Cyrillic Small Letter Ka) is.

They're curated from the following sets:

[:IdentifierStatus=Allowed:] &  [:Ll:] &
  [[:sc=Cyrillic:] -
  [[\u01cd-\u01dc][\u1c80-\u1c8f][\u1e00-\u1e9b][\u1f00-\u1fff]
  [\ua640-\ua69f][\ua720-\ua7ff]]] &
[:NFD_Inert=Yes:]

[:IdentifierStatus=Allowed:] &  [:Ll:] &
  [[:sc=Latin:] - [[\u01cd-\u01dc][\u1e00-\u1e9b][\ua720-\ua7ff]]] &
[:NFD_Inert=Yes:]

[:IdentifierStatus=Allowed:] &  [:Ll:] & [[:sc=Greek:]] &
[:NFD_Inert=Yes:]

Bug:  793628 , 798892 
Test: components_unittests --gtest_filter=*IDN*
Change-Id: I20c6af13defa295f6952f33d75987e87ce1853d0
Reviewed-on: https://chromium-review.googlesource.com/860567
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Eric Lawrence <elawrence@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#529129}
[modify] https://crrev.com/fe3c71592ccc6fd6f3909215e326ffc8fe0c35ce/components/url_formatter/idn_spoof_checker.cc
[modify] https://crrev.com/fe3c71592ccc6fd6f3909215e326ffc8fe0c35ce/components/url_formatter/top_domains/test_domains.list
[modify] https://crrev.com/fe3c71592ccc6fd6f3909215e326ffc8fe0c35ce/components/url_formatter/top_domains/test_skeletons.gperf
[modify] https://crrev.com/fe3c71592ccc6fd6f3909215e326ffc8fe0c35ce/components/url_formatter/url_formatter_unittest.cc

http://xn--wikiedia-s6a.org/ (wikiþedia.org) is now blocked in canary. 

Note that wikiþedia.com is not blocked because wikipedia.com is not in the top domain list. (at the moment, wikipedia.com is redirected to wikipedia.org ; when we update our top domain list, wikipedia.com may be added to the list). 

Oops! Sorry in comment #0 I meant wikiþedia.org not wikiþedia.com.

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This bug requires manual review: Less than 21 days to go before AppStore submit on M65
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

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[Bulk Edit]

+awhalley@ (Security TPM) for M65 merge review

This bug has been closed for more than 14 weeks. Removing security view restrictions.

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