2018-10-07

中国の悪意あるハードウェアの細工を見破る方法

中国で生産されているハードウェアに悪意あるチップが取り付けられておりAppleやAmazonが被害にあっているとする報道があり、真偽について議論がある。

これに関連して、Hacker Newsで興味深いコメントが寄せられていた。

I have worked in card payment industry. We would be getting products from China ... | Hacker News

俺はカード支払い業界で働いている。中国から送られてくる製品にクレジットカード情報を送信する装置が取り付けられていることがある。これは国家による攻撃ではない。装置は生産ラインの途中で取り付けられている。大抵は賄賂を受け取った従業員によるものだ。装置が組み立てられた後は、改造防止の機能が動くので、改造を検知させずに装置を分解するのは不可能だ。

この問題が発覚してから、我々は製品の重さを計測することにした。我々も製品を分解することはできないからだ。分解したならば改造検知により装置は動かなくなる。

攻撃者は重さの計測に気がついたので、製品内部の必須ではないプラスチックを引っぺがして装置を追加することによって増加した重さの調整をしてくるようになった。

結局、我々は特別な土台を使い製品の角運動量(訳注:慣性モーメントか)を計測するようになった。とても高価な装置で角運動量を計測する。俺が作った土台を使って2つの角度から角運動量を計測している。2つの製品の角運動量がどの角度からでも一致するならば製品は同一というわけだ。すべての角度から角運動量を計測できないが、今のところ破られていない。

角運動量ではなく慣性モーメントだろうという用語の甘さや、慣性モーメントは3軸を使って全角度を測定できるのではというツッコミが入っているが、この話自体はよくあるものらしい。

なんでそんな製造段階で悪意ある細工が混入した製品を送ってくるところと取引を続けるんだというコメントに対し、この製品を製造しているのは今や中国をおいて他にないとか、中国の商習慣では信頼を前提としない契約による取引に応じてくれないとか、中国と取引するには製品の欠陥は自前で発見できなければならない、発見できないのはマヌケな顧客であり欠陥品で十分だとみなされる、などの中国のお国柄を指摘するコメントが続いている。

92 comments:

fillikir72518 said...

When I originally commented I clicked the -Notify me when new feedback are added- checkbox and now each time a comment is added I get 4 emails with the same comment. Is there any means you can remove me from that service? Thanks! casino bonus

Anonymous said...

very like your blog
I really enjoyed your blog Thanks for sharing such an informative post.
Great post ! thanks for sharing .! this site are good after reading..so awesome.
크레이지슬롯
하이게이밍
해외토토사이트
경마사이트
슬롯게임
https://ocn2001.com/

SEO CANADA said...

It proved to be Very helpful to me and I am sure to all the commentators here 먹튀검증

SEO CANADA said...

There is noticeably a bundle to find out about this. I assume you made sure nice factors in options also 파워볼사이트

SEO CANADA said...

I am a new user of this site so here i saw multiple articles and posts posted by this site,I curious more interest in some of them hope you will give more information on this topics in your next articles. 파워볼놀이터

SEO CANADA said...

Very informative post! There is a lot of information here that can help any business get started with a successful social networking campaign. 사설토토

ANNALIZA said...

I really like and appreciate your blog
here's the link that will make you laugh and enjoy
just click our link below
카지노사이트
https://yhn777.com 카지노사이트

SEO CANADA said...

Thank you for the update, very nice site. rat pest control london

SeoMaster789 said...

I am so pleased I situated your blog site, I actually situated you by mistake, while I was taking a look at on google for another point, Anyways I am below now in addition to additionally would certainly just like to insist give thanks to for an outstanding blog post along with an all-around entertaining internet site 먹튀검증

Anonymous said...

https://twitter.com/totobobbi For a long time me & my friend were searching for informative blogs, but now I am on the right place guys, you have made a room in my heart! 토토사이트

SEO CANADA said...

I am jovial you take pride in what you write. It makes you stand way out from many other writers that can not push high-quality content like you 먹튀폴리스

lirik terjemahan said...

dernière

bacarasite said...

You made a number of fine points there. I did a search on the matter and found most folks will have the same opinion with your blog. 바카라

powerballsite said...

You have great ideas to share something like this. Thanks for share this info. I really enjoy this site cause its worth with the useful info.. thank dear..! 파워볼

바카라사이트 said...

Aw, this was an extremely nice post. Taking a few minutes and actual effort to generate a top
notch article. 바카라사이트

카지노사이트 said...

Thanks for sharing this marvelous post. I m very pleased to read this article. 카지노사이트

토토 said...

Nice one! thank you so much! Thank you for sharing this post. Your blog posts are more interesting and impressive. 토토

바카라사이트 said...

Thank you for sharing this information. I read your blog and I’m not stopped my self to read your full blog. Again Thanks and Best of luck your next Blog in future. 바카라사이트

DIO1337 said...

เกมส์คาสิโน betflix แทงบอลออนไลน์ ซื้อหวยออนไลน์ และ เกมสล็อตออนไลน์ ได้ทุกอย่างใน เว็บเบตฟลิกซ์ ที่เราได้รวบรวมเกมส์คาสิ และ สล็อตออนไลน์ บนมือถือ ที่ไม่ต้องโหลด เราคัดสรรค์เกมคุณภาพจากทั่วทุกมุมโลกมากกว่า 870 เกมส์ คลิ๊ก!! เพื่อเล่นเกมฟรี

lirik lagu said...

i love your articles lirik lagu

onlyblog said...

Nice Blog. Thanks for sharing with us. Such amazing information.

Only Blog

Guest Blogger

Guest Blogging Site

Guest Blogging Website

Guest Posting Site

lirik lagu said...

makasih infonya om
sangat bermanfaat
lirik terjemahan
kunci gitar
lirik lagu

myboy3322 said...

HI~This is really interesting, You’re a very skilled blogger. I have joined your rss feed and look forward to seeking more of your wonderful post.먹튀검증

dragonG said...

HI~I like the helpful information you provide in your articles. I’ll bookmark your blog and check again here frequently.먹튀검증사이트

GOGOLIVE said...


Great post! I am actually getting ready to across this information, is very helpful my friend. Also great blog here with all of the valuable information you have. Keep up the good work you are doing here. 온라인포커

안전놀이터 said...

It's so interesting.안전놀이터Let's enjoy it together.

Unknown said...

바카라사이트 Playing casino is one of the most varied forms of gambling there is, thanks to the wide range of games available. You can visit either a brick and mortar casino or any online casino and you’ll usually find a great selection of games to play.

casinosite777info said...

it was a wonderful chance to visit this kind of site and I am happy to know. thank you so much for giving us a chance to have this opportunity. 플러스카지노사이트

먹튀검증업체 said...

I feel like I'm becoming a genius because there are so many good writings in the world.먹튀검증업체

먹튀검증업체 said...

It's soon enough to get a lot of information. I'm too happy to express it.먹튀검증업체

baccaratsitebiz said...

I’m not that much of a online reader to be honest but your blogs really nice, keep it up! I’ll go ahead and bookmark your site to come back later. Many thanks. 카지노사이트

baccaratsitetop said...

바카라사이트
Great post I would like to thank you for the efforts you have made in writing this interesting and knowledgeable article.

lannybhu said...

I am very enjoyed for this blog. Its an informative topic. It help me very much to solve some problems. Its opportunity are so fantastic and working style so speedy.
사설토토

sportstoto.zone said...

I do agree with all of the ideas you’ve토토 presented in your post.

baccaratsite.biz said...

Thanks for such a valuable post. I am 바카라사이트waiting for your next post, I have enjoyed a lot reading this post keep it up.

Unknown said...

온라인카지노사이트

I simply want to tell you that I am just beginner to blogs and really enjoyed you’re web page. Very likely I’m planning to bookmark your site . You really have fantastic posts. Thank you for sharing

Unknown said...

I am incapable of reading articles online very often, but I’m happy I did today. It is very well written, and your points are well-expressed. I request you warmly, please, don’t ever stop writing.
파워볼게임

Unknown said...

토토사이트
Amazing how this article help me as a human being that's help me a lot! This has been a really wonderful post. Thanks for providing this info.

bamgosoowm said...

I’m not that much of a internet reader to be honest but your blogs really nice, keep it up! I’ll go ahead and bookmark your site to come back in the future. Many thanks|

Feel free to surf to my page - 오피


baccaratsitetop said...

All your hard work is much appreciated. Nobody can stop to admire you. 온라인카지노 Lots of appreciation.

bamgosoocom said...


Very informative post and really appreciable. Keep doing great work like this.

My web site - 대구오피
(jk)

bamgosoo said...


I blog quite often and I truly appreciate your content.
This article has really peaked my interest.
I’m going to book mark your blog and
keep checking for new details about once a week.
I subscribed to your Feed as well.

Also visit my webpage - 대구오피
(jk)

메이저안전놀이터 said...


You delivered such an impressive piece to read, giving every subject enlightenment for us to gain information. Thanks for sharing such information with us due to which my several concepts have been cleared. 메이저안전놀이터

opbest said...


Thank you for your sharing articles. I have been finding interesting posts and your articles are what I need.
They are really useful and engaging. They are precious pieces of advice. I can branch out with new knowledge.
Learn captivating things. Hope you will upload more me.

Try to check my webpage :: 오피

(freaky)

casinositeguide.com said...

I simply want to tell you that I am just beginner to blogs and certainly enjoyed you’re web page. Almost certainly I’m want to bookmark your site . 호텔카지노

sportstoto.link said...

Thanks for sharing with us this important Content. I feel strongly about it and really enjoyed learning more about this topic. 토토

casinosite777info said...

Great post I would like to thank you for the efforts you have made in writing this interesting and knowledgeable article. 더킹카지노

casinosite.pro said...

Great web site. A lot of useful information here. I’m sending it to several friends ans also sharing in delicious. And obviously, thanks in your effort. 온라인카지노

casinosite.one said...

Thanks for sharing excellent informations. Your web site is very cool. I am impressed by the details that you've on this site.카지노사이트

baccaratsite.info said...

Hey there, You’ve done an excellent job. I will definitely digg it and personally suggest to my friends. I’m confident they will be benefited from this website. 카지노

sportstototopcom said...

Great web site you've got here.. It's difficult to find high-quality writing like nowadays. I seriously appreciate people like you! Take care!! 스포츠토토

alone said...
This comment has been removed by the author.
unknown said...

That's a really impressive new idea! 메이저토토사이트추천 It touched me a lot. I would love to hear your opinion on my site. Please come to the site I run once and leave a comment. Thank you.


baccaratsite.biz said...

I am hoping the same best effort from you in the future as well. In fact your creative writing skills has inspired me. 카지노사이트

casinosite.one said...

I like what you guys are up also. Such clever work and reporting! Carry on the excellent works guys I?|ve incorporated you guys to my blogroll. I think it will improve the value of my website. 바카라사이트

baccaratsite.info said...

Genuinely when someone doesn’t understand afterward its up to other viewers that they will help, so here it takes place. 카지노

casinosite.zone said...

Quality articles or reviews is the important to interest the people to pay a quick
visit the website, that’s what this site is providing. 카지노사이트

sportstototopcom said...

Hey, I appreciate your quality stuff and I would like to read more quality stuff like this. keep sharing. 토토

Blast Backlinks SEO said...

You know your projects stand out of the herd. There is something special about them. It seems to me all of them are really brilliant! 먹튀폴리스

카지노슬롯 said...

Hi there, I simply hopped over in your website by way of StumbleUpon. Now not one thing I’d typically learn, but I favored your emotions none the less. Thank you for making something worth reading. 카지노슬롯


sòng bạc said...

Hello, I am one of the most impressed people in your article. sòng bạc I'm very curious about how you write such a good article. Are you an expert on this subject? I think so. Thank you again for allowing me to read these posts, and have a nice day today. Thank you.


바카라사이트 said...

Your writing is perfect and complete. 바카라사이트 However, I think it will be more wonderful if your post includes additional topics that I am thinking of. I have a lot of posts on my site similar to your topic. Would you like to visit once?


yahanvideo.net said...

Hey there. I found your site by the use of Google whilst looking for a similar subject, your site came up. It looks good. I have bookmarked it in my google bookmarks to visit then. Feel free to visit my website; 일본야동

chinayadong.net said...

Amazing article. Your blog helped me to improve myself in many ways thanks for sharing this kind of wonderful informative blogs in live. I have bookmarked more article from this website. Such a nice blog you are providing. Feel free to visit my website; 일본야동

japanyadong.com said...

Good post however I was wanting to know if you could write a litte more on this subject? I’d be very thankful if you could elaborate a little bit further. Cheers! Feel free to visit my website; 한국야동

메이저사이트 said...

Positive site, where did u come up with the information on this posting?I have read a few of the articles on your website now, and I really like your style. Thanks a million and please keep up the effective work. 메이저사이트

먹튀검증사이트 said...

You delivered such an impressive piece to read, giving every subject enlightenment for us to gain information. Thanks for sharing such information with us due to which my several concepts have been cleared. 먹튀검증사이트

메이저토토사이트 said...

An intriguing discussion may be worth comment. I’m sure you should write much more about this topic, may well be described as a taboo subject but generally folks are too little to chat on such topics. An additional. Cheers 메이저토토사이트

vé máy bay từ canada về việt nam said...

Mua vé máy bay tại Aivivu, tham khảo

Ve may bay di My

vé máy bay từ los angeles về việt nam

mua vé máy bay từ nhật bản về việt nam

lich bay tu duc ve viet nam

giá vé máy bay từ Vancouver về việt nam

vé máy bay từ hàn về Việt Nam

chuyến bay chuyên gia

Muhammad Bilal said...

Yes i am totally agreed with this article and i just want say that this article is very nice and very informative article.I will make sure to be reading your blog more. You made a good point but I can't help but wonder, what about the other side? !!!!!!THANKS!!!!!! https://voyance-telephone-gaia.com/

koreayadongcom said...

I love what you guys are up too. Such clever work and exposure! Keep up the very good works guys I’ve incorporated you guys to my own blogroll. 한국야동닷컴

Click this link
국산야동

chinayadongnet said...

What your declaring is entirely genuine. I know that everyone need to say the exact same factor, but I just believe that you put it in a way that all of us can comprehend. 중국야동넷

Click this link
야설

SAFE SITES18 said...

Thank you for sharing the information, the article is very interesting to read and may be useful for everything. 토토사이트

SAFE SITES18 said...


This article is quite interesting and I am looking forward to reading more of your posts. Thanks for sharing this article with us. 파워볼사이트닷컴

cragro.com said...

The promotional texts on the Toto site have compelling promotions, but checking out the most important safe playgrounds is a priority. Recognized as a major site in the past, Sports Toto offers betting users a satisfying service.
cragro

mujuru.com said...

If you are looking for a private Toto domain address, a website with a list of recommendations for good gambling sites like SafeToto can help.
mujuru

yahanvideonet said...

This is the best article for anyone that wants to learn about this subject. 일본야동

Please visit once. I leave my blog address below
한국야동
일본야동

toto graph said...

My partner and I stumbled over here different web page and thought I might as well check things out. I like what I see so now i am following you. Look forward to exploring your web page repeatedly. casino site

keonhacai said...

keonhacai

oncainven said...

oncainven

안전놀이터 said...

Papers get to operate through Bible helpers and also plagiarism checkers to be certain that the author did not find idle at any stage in the process. Language inconsistencies won't be a thing with your newspapers as the specialists of our school paper writing support are passionate about writing and are always excited to strike you with something fresh. By: 안전놀이터


Amy Laidlaw said...

Impressive!Thanks for the post. Keep it up. If you spend a lot of time in front of a computer, display flickering can lead to eye strain, migraines, and a variety of other health problems. Fortunately, you can take certain actions to stop Monitor Flickering and prevent these issues. I'll explain how to stop your LCD monitor from flickering in this article.

johnson said...

I appreciate you for offering your expertise with us! concentrate up your excellent work! carry on spreading the message of hope. Make sure you take a look at my website.
Leesburg Divorce Lawyer
Abogados Familia Cerca Mi Edison NJ

메이저사이트 said...

Thank you for the good writeup. It in fact was a amusement account it.

gostopsite.com said...

you! By the way, how could we communicate?

sportstotomen.com said...

Is this a paid theme or did you modify it yourself?

19guide03.com said...

We are a team of volunteers and starting a new project

slotplayground.com said...

information to work on. You have done a outstanding job!

edwardsrailcar.com said...

Mia to remember the trip? How fun!

cmriindia.org said...

This sharing concept is a good way to enhance the knowledge.

먹튀검증 said...

Certainly! Preserving baby shoes is a delightful way to cherish those precious early memories.

بهانت said...

Domain Authority is a metric introduced by Moz that refers to the strength and credibility of a website. This metric is calculated based on various factors such as the number of backlinks, the quality of the links, the age of the domain, and other SEO-related factors. The higher the Domain Authority of a website, the more authoritative and trustworthy that website is افزایش دامین اتوریتی بالای 30