Other documents record apparently successful efforts to penetrate the security of BlackBerry smartphones: “New converged events capabilities against BlackBerry provided advance copies of G20 briefings to ministers … Diplomatic targets from all nations have an MO of using smartphones. Exploited this use at the G20 meetings last year.”
The operation appears to have run for at least six months. One document records that in March 2009 – the month before the heads of state meeting – GCHQ was working on an official requirement to “deliver a live dynamically updating graph of telephony call records for target G20 delegates … and continuing until G20 (2 April).”
In the week after the September meeting, a group of analysts sent an internal message to the GCHQ section which had organised this live monitoring:
"Thank you very much for getting the application ready for the G20 finance meeting last weekend … The call records activity pilot was very successful and was well received as a current indicator of delegate activity …
"It proved useful to note which nation delegation was active during the moments before, during and after the summit. All in all, a very successful weekend with the delegation telephony plot."