This could well be working as expected, insofar as "google.co.com" isn't a real domain and doesn't look like one either. Inter-label character set mixing is different than Intra-label mixing. As noted in https://www.chromium.org/developers/design-documents/idn-in-google-chrome,

"Google Chrome decides if it should show Unicode or punycode for each domain label (component) of a hostname separately."

Jshin@, can you please triage and close if this is working as intended.

This is rather interesting. According to registry.co.com, co.com tries to attract those without .com domain to get an alternative ( <foo>.co.com).  

Anyway, this is working as intended.  

I'm adding the following 4 entries to the confusability list for Chrome:

U+1004 (င) => c
U+100c (ဌ) => g
U+1042 (၂) => j
U+1054 (ၔ) => e

Thank you for reporting. 


U+101d (ဝ) => o  // this is already covered by Unicode data. 

Thank for the fast fix :-)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/37747f4a4972e6d44d3f956f8d3a63255ef0941a

commit 37747f4a4972e6d44d3f956f8d3a63255ef0941a
Author: Jungshik Shin <jshin@chromium.org>
Date: Thu Feb 15 06:56:39 2018

Add more entries to the confusability mapping

U+014B (ŋ) => n
U+1004 (င) => c
U+100c (ဌ) => g
U+1042 (၂) => j
U+1054 (ၔ) => e

Bug:  811117 , 808316 
Test: components_unittests -gtest_filter=*IDN*
Change-Id: I29f73c48d665bd9070050bd7f0080563635b9c63
Reviewed-on: https://chromium-review.googlesource.com/919423
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536955}
[modify] https://crrev.com/37747f4a4972e6d44d3f956f8d3a63255ef0941a/components/url_formatter/idn_spoof_checker.cc
[modify] https://crrev.com/37747f4a4972e6d44d3f956f8d3a63255ef0941a/components/url_formatter/top_domains/test_domains.list
[modify] https://crrev.com/37747f4a4972e6d44d3f956f8d3a63255ef0941a/components/url_formatter/top_domains/test_skeletons.gperf
[modify] https://crrev.com/37747f4a4972e6d44d3f956f8d3a63255ef0941a/components/url_formatter/url_formatter_unittest.cc

http://google.xn--rid4c.com/ will not be blocked (comment #1, comment #3), but if there's a domain in the top 10k list which can be spoofed by 5 Burmese characters in comment 4, it'll be blocked.

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Or credit as "Lnyas Zhang", thanks a lot

This bug requires manual review: M66 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), josafat@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Approved for M66 - branch:3359

The CL for this bug was landed on Feb 15 (2 weeks before M66 branch) :-)

See comment 8. 

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

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