Shane Harris&#x27; looked at ISIS&#x27; use of Telegram in the Daily Beast a few days ago.  [1]  And Marcy Wheeler&#x27;s post yesterday [2] relates John Brennan&#x27;s complaints about the challenges encryption is causing for law enforcement &quot;especially in Europe&quot;.  Marcy writes:<p>&quot;If terrorists were using WhatsApp (which a lot of the fearmongering focused on), the metadata, at least, would be available via Facebook. But since Telegram is not a US company, it cannot be obliged under Section 702 of FISA, and that surely creates just the kind of gap Brennan was talking about.&quot;<p>[1] <a href="http:&#x2F;&#x2F;www.thedailybeast.com&#x2F;articles&#x2F;2015&#x2F;11&#x2F;16&#x2F;this-is-isis-new-favorite-app-for-secret-messages.html" rel="nofollow">http:&#x2F;&#x2F;www.thedailybeast.com&#x2F;articles&#x2F;2015&#x2F;11&#x2F;16&#x2F;this-is-isi...</a><p>[2] <a href="https:&#x2F;&#x2F;www.emptywheel.net&#x2F;2015&#x2F;11&#x2F;18&#x2F;brennan-was-probably-talking-about-the-telegram-prism-gap-as-much-as-encryption&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.emptywheel.net&#x2F;2015&#x2F;11&#x2F;18&#x2F;brennan-was-probably-t...</a>