Docomo Shared Customer Data With Amazon Without Consent — 5ch Asks, “A Warning Is All They Get?”

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The story

The Ministry of Internal Affairs and Communications issued administrative guidance to NTT Docomo after it was found to have shared the personal data of over 340,000 subscribers who had signed up for rate plans online with Amazon without their consent. On the forum, reactions mixed shock that unauthorized sharing of personal data with a third party results in nothing more than “guidance,” with others noting that Docomo and Amazon already run a points-linking partnership, so none of this is surprising. Some also pointed out that the explanation given at the press conference about a separate data leak from unauthorized access, which made headlines around the same time, was hard to follow.

Ministry of Internal Affairs and Communications Issues Administrative Guidance to NTT Docomo Over Sharing Subscriber Data With Amazon Without Consent

Source: news.yahoo.co.jp / Original article here

What people said

4AnonymousNov 6, 2026 21:41
Corporate crime pays — you never actually get caught.
5AnonymousNov 6, 2026 21:41
Selling out personal data to an American company — straight-up traitors.
6AnonymousNov 6, 2026 21:41
No, arrest them already
This is a huge deal, this is a crime.
7AnonymousNov 6, 2026 21:42
Can't even get a signal, and on top of that they're selling our data off…
8AnonymousNov 6, 2026 21:42
Same as Toshiba's accounting-fraud scandal — they really do go easy on big companies lol
49AnonymousNov 6, 2026 21:49
Re: #8
That one wasn't even called "fraud."
When a big company does it, it's just "improper accounting."
51AnonymousNov 6, 2026 21:50
Re: #8
Well, considering Dentsu and Fuji TV still get away with whatever they want to this day…
12AnonymousNov 6, 2026 21:43
Mighty NTT really has sunk to being a trash company.
13AnonymousNov 6, 2026 21:43
Lemino just randomly started partnering with WOWOW too.
17AnonymousNov 6, 2026 21:43
Don't tell me this is why ahamo was so cheap… lol 🤭 (ahamo is Docomo's budget phone plan)
18AnonymousNov 6, 2026 21:44
What's actually wrong with this, though?
20AnonymousNov 6, 2026 21:44
Re: #18
They never gave consent, that's what.
19AnonymousNov 6, 2026 21:44
>Of the roughly 340,000 subscribers who signed up for an NTT Docomo rate plan online


everyone on ahamo rn lol
21AnonymousNov 6, 2026 21:44
That separate leak from the unauthorized access thing also sounds seriously bad
I watched the press conference and still couldn't really follow it.
23AnonymousNov 6, 2026 21:45
Docomo's genuinely finished
au's network is gonna be the only one left standing now
25AnonymousNov 6, 2026 21:45
They already had account linking with Amazon anyway, so this is nothing new to me.
27AnonymousNov 6, 2026 21:45
So ahamo's dirt cheap, but that's fine because they're making money selling our personal data to Amazon on the side?
39AnonymousNov 6, 2026 21:47
No signal indoors, garbage speeds, not even that cheap, no earthquake early warnings come through, and now selling off personal data without consent

Is that two outs already?
72AnonymousNov 6, 2026 22:02
Re: #39
Called game, match over — same as always.
43AnonymousNov 6, 2026 21:48
Wait, this is supposed to be a country governed by law and they let it slide with just a warning? Isn't that messed up?
52AnonymousNov 6, 2026 21:51
This is exactly when having a solid pipeline of retired bureaucrats (amakudari) pays off lol
That amakudari shield is working overtime 🤭
55AnonymousNov 6, 2026 21:53
Re: #52
Sompo Japan, which ran wild during the BigMotor scandal, also got its money's worth out of taking in ex-bureaucrats.
58AnonymousNov 6, 2026 21:55
Docomo's really gone downhill lately.
67AnonymousNov 6, 2026 22:00
Re: #58
They've had zero business sense for ages.
Remember the PRADA Phone lolll
68AnonymousNov 6, 2026 22:01
If you've got complaints, just don't use Docomo, simple as that
Hope Docomo doesn't cave to the complainers.
70AnonymousNov 6, 2026 22:02
Getting off with just a warning — Japan really is soft on corporations.
78AnonymousNov 6, 2026 22:04
Re: #70
Plenty of Japanese companies have leaked personal data recently and didn't even get a warning for it.
Heck, even the government has leaked personal data.
79AnonymousNov 6, 2026 22:06
Wait, they get let off with just "guidance" lol
That's flat-out collusion.
83AnonymousNov 6, 2026 22:10
Re: #79
Well, it used to be the state-run telecom monopoly.
It's sticky with collusion everywhere, pulling strings behind the scenes.
82AnonymousNov 6, 2026 22:09
This wasn't a hack, they handed the data over themselves — that should be a dead-on violation of the Personal Information Protection Act.
Why does a crime that's written into the law books as carrying fines in the hundreds of millions of yen get settled with mere "guidance" when a company does it?
86AnonymousNov 6, 2026 22:12
Re: #82
Makes you wonder if it's fine that the Self-Defense Forces get student info from local governments to use for recruiting pitches, then.
85AnonymousNov 6, 2026 22:11
That one was a hack, though?
91AnonymousNov 6, 2026 22:18
Re: #85
If it's a hack, then they can just hold an apology press conference and call it a day, right?
87AnonymousNov 6, 2026 22:12
Docomo Points already links up with Amazon, so none of this surprises me.
Also figured all along that the flood of spam calls lately is leaking out from places like this.
94AnonymousNov 6, 2026 22:19
Re: #87
So the spam calls really are coming from leaked data, huh.
100AnonymousNov 6, 2026 22:23
Re: #87
Same as me…
Every night on the train home I inhale a Big Mac and 7-Eleven pork ramen, then wash it all down with a Strong Zero (cheap, strong canned chuhai).
I've gotten so locally famous they call me "Big Eater John."
Dead serious.

Background and Key Points of This Story

Administrative guidance from the Ministry of Internal Affairs and Communications is a regulatory measure calling for a company to correct a violation of its obligations under the Personal Information Protection Act — it does not come with a fine or criminal penalty. On the forum, the fact that non-consensual third-party data sharing ended in nothing more than “guidance” drew a wave of complaints that Japan is “too soft for a country supposedly governed by law,” but that reaction overlooks the institutional gap between administrative guidance and criminal punishment: Docomo was not actually fined in this case. It’s also worth noting that the “leak from unauthorized access” mentioned in the thread was a separate incident reported independently of this one, with a different cause from the non-consensual third-party sharing this article covers. And the people affected were limited to subscribers who signed up for a rate plan online — not Docomo’s entire subscriber base — a distinction that’s easy to miss.

※This article is excerpted and summarized from the 5ch (Livegalileo channel) thread “[Sad News] Docomo handed subscriber data to Amazon without permission, gets administrative guidance from the Ministry lmaoooooooooo.”

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