Interesting thread where some ESA‘s 2012 slides containing threats models are commented while “Cosmos 2542, a Russian satellite, has recently synchronized its orbit with USA 245, a NRO KH11” sat”.
By the way, CCSDS’ SEA-SEC Working group is in the process of updating its 2015 Security Threats against Space Missions Green Book. Issue 2. December 2015 – (CCSDS 350.1-g-2 PDF file).
