cf. paragraph 1 on page 6:
> In terms of other technical IT platforms, an FSB cyber operative flagged up the "Telegram" enciphered commercial system as having been of especial concern and therefore heavily targeted by the FSB, not least because it was used frequently by Russian internal political activists and oppositionists. His/her understanding was that the FSB now successfully had cracked this communications software and therefore it was no longer secure to use.
