Re: China ’s Maxim – Leave No Access Point Unexploited: The Hidden Story of China Telecom’ s BGP Hijacking

Tore Anderson tore at
Mon Nov 5 08:54:08 UTC 2018

* Harley H

> Curious to hear others' thoughts on this. 
> This paper presents the view that several BGP hijacks performed by China Telecom had malicious intent. The incidents are:
> * Canada to Korea - 2016
> * US to Italy - Oct 2016
> * Scandinavia to Japan - April-May 2017
> * Italy to Thailand - April-July 2017
> The authors claim this is enabled by China Telecom's presence in North America.


I looked a bit into the Scandinavia to Japan claim last week for a Norwegian
journalist, who obviously found this rather sensational claim very intriguing.
The article (Norwegian, but Google Translate does a decent job) is found at
in case you're interested.

>From what I can tell from looking at routeviews data from the period, what
happened was that SK Broadband (AS9318) was leaking a bunch of routes to
China Telecom (AS4134). The leak included the transit routes from SKB's
upstream Verizon (AS703) and customers of theirs in turn, including well-
known organisations such as Bloomberg (AS10361) and Time Warner (AS36032),
which I suppose might be the ones the paper is referring to.

The routes in question then propagated from CT to Telia Carrier (AS1299),
probably in North America somewhere. Scandinavia is TC's home turf, it
makes sense that the detour via CT was easily observed from here.

If you want to see for yourself, look for «1299 4134 9318 703» in

Anyway, in my opinion the data for this particular incident (I haven't
looked into the other three) does not indicate foul play on CT's behalf,
but rather a pretty standard leak by SKB followed by sloppy filtering
by CT and TC both.


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