7 ms·

How did that work? Did they monitor the swarms? Fingerprint the chunks?

by bragr 4y ago

bawolff 4y ago
Movie studio hires company to monitor bittorrent trackers/dht, send letter to isp, isp forwards the letter to you (legally required in some juridsictions, e.g. canada) In many cases this is a pgp signed xml document, which is bizarre as i have no idea what an average person would make of that.
- walrus01 4y ago
  The XML is supposed to be used by the ISP receiving the dmca notice, with their internal automation systems, to determine what subscriber had a specific ip address in a DHCP pool at that point in time. Then generate an email outbound to the customer's email in the billing system db.
npteljes 4y ago
You can query trackers and DHT for torrents, and they return a bunch of IPs that are seeding/downloading the torrent. And then, as an ISP, you can combine IPs to subscriptions. Check out this website that does the IP querying part for you: https://iknowwhatyoudownload.com/ https://iknowwhatyoudownload.com/
- Rerarom 4y ago
  Wow! I never thought there were records of that.
  - TechBro8615 4y ago
    There’s a Defcon talk circa 2013 about crawling DHTs: https://www.youtube.com/watch?v=cvQrNoCwxgE https://www.youtube.com/watch?v=cvQrNoCwxgE
    - anacrolix 4y ago
      There's also magnetico: http://magnetico.org/ http://magnetico.org/
      - npteljes 4y ago
        I just get a rickroll gif on your link. Did you mean this project? "Autonomous (self-hosted) BitTorrent DHT search engine suite." https://github.com/boramalper/magnetico https://github.com/boramalper/magnetico
        Rerarom 4y ago
        I don't get a rickroll, I get a redirect to the address you posted.
        TechBro8615 4y ago
        I also got RR’d when I clicked the other day. It’s working now though. But it’s an http link so who knows. Anyway, that repo is archived now. But I did find a more modern iteration of the idea: https://github.com/dennis-tra/nebula-crawler https://github.com/dennis-tra/nebula-crawler
- neurostimulant 4y ago
  My local ISP uses CGNAT so I guess that page lists what my neighbors are downloading. So many porns.
  - thegabriele 4y ago
    Well i found many unexpected adult type contents too, how can i tell if my local ISP uses CGNAT?
    - neurostimulant 4y ago
      The easiest way is to just compare what your actual public ip address is (e.g. using `curl ifconfig.me`) and what actually configured as WAN ip address in your router/modem. If it doesn't match, you're likely behind a CGNAT.
      - thegabriele 4y ago
        Thanks, well it seems theyknowwhatidownload but imnot.
  - superkuh 4y ago
    It's not really an ISP if it uses CGNAT. It's more of a web service provider. And it's not like you (or your neighbors) can participate in p2p protocols anyway if you don't have a routable IP address and ports.
    - neurostimulant 4y ago
      Downloading torrent is fine though. You can connect to peers just fine, it's just the other peers can't initiate connection to you which is bad for seeding.

How did that work? Did they monitor the swarms? Fingerprint the chunks?

by bragr 4y ago

How did that work? Did they monitor the swarms? Fingerprint the chunks?

Movie studio hires company to monitor bittorrent trackers/dht, send letter to isp, isp forwards the letter to you (legally required in some juridsictions, e.g. canada) In many cases this is a pgp signed xml document, which is bizarre as i have no idea what an average person would make of that.

walrus01 4y ago
The XML is supposed to be used by the ISP receiving the dmca notice, with their internal automation systems, to determine what subscriber had a specific ip address in a DHCP pool at that point in time. Then generate an email outbound to the customer's email in the billing system db.

npteljes 4y ago

You can query trackers and DHT for torrents, and they return a bunch of IPs that are seeding/downloading the torrent. And then, as an ISP, you can combine IPs to subscriptions. Check out this website that does the IP querying part for you: https://iknowwhatyoudownload.com/ https://iknowwhatyoudownload.com/

Rerarom 4y ago
Wow! I never thought there were records of that.
- TechBro8615 4y ago
  There’s a Defcon talk circa 2013 about crawling DHTs: https://www.youtube.com/watch?v=cvQrNoCwxgE https://www.youtube.com/watch?v=cvQrNoCwxgE
  - anacrolix 4y ago
    There's also magnetico: http://magnetico.org/ http://magnetico.org/
    - npteljes 4y ago
      I just get a rickroll gif on your link. Did you mean this project? "Autonomous (self-hosted) BitTorrent DHT search engine suite." https://github.com/boramalper/magnetico https://github.com/boramalper/magnetico
      - Rerarom 4y ago
        I don't get a rickroll, I get a redirect to the address you posted.
        TechBro8615 4y ago
        I also got RR’d when I clicked the other day. It’s working now though. But it’s an http link so who knows. Anyway, that repo is archived now. But I did find a more modern iteration of the idea: https://github.com/dennis-tra/nebula-crawler https://github.com/dennis-tra/nebula-crawler
neurostimulant 4y ago
My local ISP uses CGNAT so I guess that page lists what my neighbors are downloading. So many porns.
- thegabriele 4y ago
  Well i found many unexpected adult type contents too, how can i tell if my local ISP uses CGNAT?
  - neurostimulant 4y ago
    The easiest way is to just compare what your actual public ip address is (e.g. using `curl ifconfig.me`) and what actually configured as WAN ip address in your router/modem. If it doesn't match, you're likely behind a CGNAT.
    - thegabriele 4y ago
      Thanks, well it seems theyknowwhatidownload but imnot.
- superkuh 4y ago
  It's not really an ISP if it uses CGNAT. It's more of a web service provider. And it's not like you (or your neighbors) can participate in p2p protocols anyway if you don't have a routable IP address and ports.
  - neurostimulant 4y ago
    Downloading torrent is fine though. You can connect to peers just fine, it's just the other peers can't initiate connection to you which is bad for seeding.