태터데스크 관리자

도움말
닫기
적용하기   첫페이지 만들기

태터데스크 메시지

저장하였습니다.

분류없음2013.11.20 16:20
Loading

엘지 스마트TV의 시청정보수집 선택버튼이 디폴트로 온으로 세팅돼 있고 설사 오프를 선택하더라도 시청정보는 LG의 서버로 날아가고 시청자의 TV에는 시청정보를 기준으로 한 맞춤광고가 전달됐다는 것이 엘지스마트TV 사용자의 주장입니다[영국내 소비자로 추정됨]. 또 스마트 TV의 각 기능버튼에 도움말을 볼 수 있도록 돼 있지만 시청정보수집은 도움말이 없었습니다. 엘지전자 런던지사는 '불편을 끼쳐서 죄송하지만 고객이 사용약관에 동의했기 때문에 안타깝지만 어쩔수 없는 일'이라며 '이 문제를 상부에 보고했다'고 밝혔습니다. 약관에 동의했기 때문에 LG전자가 책임을 면할 수 있을 지는 의문입니다, 시청정보수집 선택버튼이 디폴트로 온으로 세팅돼 있고 설사 오프를 선택해도 시청정보가 날라갔다는 고객주장이 사실이라면 '스파이TV'라는 비난과 피해보상소송을 피하기 힘들 것으로 보입니다. 또 삼성의 스마트TV는 어떻게 설정됐는 지 관심이 집중될 것으로 보입니다

----------------------------------------------------------------------------------------

Monday, 18 November 2013

LG Smart TVs logging USB filenames and viewing info to LG servers

Earlier this month I discovered that my new LG Smart TV was displaying ads on the Smart landing screen.


After some investigation, I found a rather creepy corporate video advertising their data collection practices to potential advertisers. It's quite long but a sample of their claims are as follows:
LG Smart Ad analyses users favourite programs, online behaviour, search keywords and other information to offer relevant ads to target audiences. For example, LG Smart Ad can feature sharp suits to men, or alluring cosmetics and fragrances to women.
Furthermore, LG Smart Ad offers useful and various advertising performance reports. That live broadcasting ads cannot. To accurately identify actual advertising effectiveness.
In fact, there is an option in the system settings called "Collection of watching info:" which is set ON by default.  This setting requires the user to scroll down to see it and, unlike most other settings, contains no "balloon help" to describe what it does.


At this point, I decided to do some traffic analysis to see what was being sent.  It turns out that viewing information appears to be being sent regardless of whether this option is set to On or Off.


Here you can clearly see that a unique device ID is transmitted, along with the Channel name "BBC NEWS" and a unique device ID.
Here is another example of a viewing info packet.
GB.smartshare.lgtvsdp.com POST /ibs/v2.2/service/watchInformation.xml HTTP/1.1
Host: GB.ibis.lgappstv.com
Accept: */*
X-Device-Product:NETCAST 4.0
X-Device-Platform:NC4M
X-Device-Model:HE_DTV_NC4M_AFAAABAA
X-Device-Netcast-Platform-Version:0004.0002.0000
X-Device-Country:GB
X-Device-Country-Group:EU
X-Device-ID:2yxQ5kEhf45fjUD35G+E/xdq7xxWE2ghu0j4an9kbGoNcyWaSsoLgyk8JJoMtjRrYRsVS6mHKy/Zdd6nZp+Y+gK6DVqnbQeDqr16YgacdzKU80sCKwOAi1TwIQov/SlB
X-Authentication:YMu3V1dv8m8JD0ghrsmEToxONDI= cookie:JSESSIONID=3BB87277C55EED9489B6E6B2DEA7C9FD.node_sdpibis10; Path=/
Content-Length: 460
Content-Type: application/x-www-form-urlencoded
&chan_name=BBC TWO&device_src_idx=1&dtv_standard_type=2
&broadcast_type=2&device_platform_name=NETCAST 4.0_mtk5398&chan_code=251533454-72E0D0FB0A8A4C70E4E2D829523CA235&external_input_name=Antenna&chan_phy_no=&atsc_chan_maj_no=&atsc_chan_min_no=&chan_src_idx=1&chan_phy_no=&atsc_chan_maj_no=&atsc_chan_min_no=&chan_phy_no=47&atsc_chan_maj_no=2&atsc_chan_min_no=2&chan_src_idx=1&dvb_chan_nw_id=9018&dvb_chan_transf_id=4170&dvb_chan_svc_id=4287&watch_dvc_logging=0
This information appears to be sent back unencrypted and in the clear to LG every time you change channel, even if you have gone to the trouble of changing the setting above to switch collection of viewing information off.

It was at this point, I made an even more disturbing find within the packet data dumps.  I noticed filenames were being posted to LG's servers and that these filenames were ones stored on my external USB hard drive.  To demonstrate this, I created a mock avi file and copied it to a USB stick.


This file didn't really contain "midget porn" at all, I renamed it to make sure it had a unique filename that I could spot easily in the data and one that was unlikely to come from a broadcast source.

And sure enough, there is was...


Sometimes the names of the contents of an entire folder was posted, other times nothing was sent.  I couldn't determine what rules controlled this.

I think it's important to point out that the URL that the data is being POSTed to doesn't in fact exist, you can see this from the HTTP 404 response in the next response from LG's server after the ACK.

However, despite being missing at the moment, this collection URL could be implemented by LG on their server tomorrow, enabling them to start transparently collecting detailed information on what media files you have stored.

It would easily be possible to infer the presence of adult content or files that had been downloaded from file sharing sites. My wife was shocked to see our children's names being transmitted in the name of a Christmas video file that we had watched from USB.

So what does LG have to say about this?  I approached them and asked them to comment on data collection, profiling of their customers, collection of usage information and mandatory embedded advertising on products that their customers had paid for.  Their response to this was as follows:
Good Morning

Thank you for your e-mail.

Further to our previous email to yourself, we have escalated the issues you reported to LG's UK Head Office.

The advice we have been given is that unfortunately as you accepted the Terms and Conditions on your TV, your concerns would be best directed to the retailer.  We understand you feel you should have been made aware of these T's and C's at the point of sale, and for obvious reasons LG are unable to pass comment on their actions.

We apologise for any inconvenience this may cause you. If you have any further questions please do not hesitate to contact us again.

Kind Regards

Tom
LG Electronics UK Helpdesk
Tel: 0844 847 5454
Fax: 01480 274 000
Email: cic.uk@lge.com
UK: [premium rate number removed] Ireland: 0818 27 6954
Mon-Fri 9am to 8pm Sat 9am-6pm
Sunday 11am - 5pm
I haven't asked them about leaking of USB filenames due to the "deal with it" nature of the above response but I have no real expectation that their response would be any different.

So how can we prevent this from happening?  I haven't read the T&Cs but one thing I am sure about is that I own my router and have absolute jurisdiction of any traffic that I allow to pass, so I have compiled an initial list of internet domains that you can block to stop spying and advertising on TVs that we, as customers have actually paid for.
  • ad.lgappstv.com
  • yumenetworks.com
  • smartclip.net
  • smartclip.com
  • llnwd.net
  • smartshare.lgtvsdp.com
  • ibis.lgappstv.com
This will free you from seeing ads plastered on your screen and having your viewing habits monitored, whilst it should still allow firmware updates to be applied.



저작자 표시 비영리 변경 금지
신고