4 ms·

Governments don't need it. The model suggested links nearby bluetooth mac addresses which get linked to the phones IMEI, and governments already have multitudes

by posnet 6y ago

Governments don't need it. The model suggested links nearby bluetooth mac addresses which get linked to the phones IMEI, and governments already have multitudes of legal ways to link names to IMEIs.

ryeguy_24 6y ago
Where did you read that it links to the phone's MAC Address/IMEI? I can't find IMEI being mentioned in any of Apple's spec documents.
- g_p 6y ago
  There isn't any IMEI linkage. I think the post you reply to is implying the link between Bluetooth MAC address to IMEI could be established by a state actor. That isn't the case though, due to Bluetooth MAC address randomisation, which the paper does address - the 10-minutely identifiers advertised are updated in sync with the local device updating its own MAC address, to prevent correlation between the last MAC address and next one.
pdkl95 6y ago
Cell tower based contact tracking is already used to infer someone's social graph and pattern-of-life. Bluetooth association data - even with opaque tokens - can easily be correlated with cell tower movement to refine CO-TRAVELER style analysis. Cell-tower-resolution analysis is already very powerful - it can trivially reveal someone's associations and overall behavior. When correlated with short-range proximity data, I suspect the same analysis might reveal behavioral details within a organization ("which meetings you attend" instead of merely "what address you work at"). https://www.washingtonpost.com/world/national-security/nsa-tracking-cellphone-locations-worldwide-snowden-documents-show/2013/12/04/5492873a-5cf2-11e3-bc56-c6ca94801fac_story.html https://www.washingtonpost.com/world/national-security/nsa-t... https://www.eff.org/deeplinks/2013/12/meet-co-traveler-nsas-cell-phone-location-tracking-program https://www.eff.org/deeplinks/2013/12/meet-co-traveler-nsas-...
- pinkfoot 6y ago
  In a previous life we we also able to identify the owners of anonymous (burner) SIM cards. Even crooks and anarchists lead very predictable lives.

by posnet 6y ago

Governments don't need it. The model suggested links nearby bluetooth mac addresses which get linked to the phones IMEI, and governments already have multitudes of legal ways to link names to IMEIs.

ryeguy_24 6y ago

Where did you read that it links to the phone's MAC Address/IMEI? I can't find IMEI being mentioned in any of Apple's spec documents.

g_p 6y ago
There isn't any IMEI linkage. I think the post you reply to is implying the link between Bluetooth MAC address to IMEI could be established by a state actor. That isn't the case though, due to Bluetooth MAC address randomisation, which the paper does address - the 10-minutely identifiers advertised are updated in sync with the local device updating its own MAC address, to prevent correlation between the last MAC address and next one.

pdkl95 6y ago

Cell tower based contact tracking is already used to infer someone's social graph and pattern-of-life. Bluetooth association data - even with opaque tokens - can easily be correlated with cell tower movement to refine CO-TRAVELER style analysis. Cell-tower-resolution analysis is already very powerful - it can trivially reveal someone's associations and overall behavior. When correlated with short-range proximity data, I suspect the same analysis might reveal behavioral details within a organization ("which meetings you attend" instead of merely "what address you work at"). https://www.washingtonpost.com/world/national-security/nsa-tracking-cellphone-locations-worldwide-snowden-documents-show/2013/12/04/5492873a-5cf2-11e3-bc56-c6ca94801fac_story.html https://www.washingtonpost.com/world/national-security/nsa-t... https://www.eff.org/deeplinks/2013/12/meet-co-traveler-nsas-cell-phone-location-tracking-program https://www.eff.org/deeplinks/2013/12/meet-co-traveler-nsas-...

pinkfoot 6y ago
In a previous life we we also able to identify the owners of anonymous (burner) SIM cards. Even crooks and anarchists lead very predictable lives.