> Privacy and security (and, secondarily, a full physical keyboard) was Blackberry's key differentiator before they lost to the touchscreen-enabled iPhone app ecosystem.
Was it? Blackberry often co-operated to provide governments with access to BBM message content[1][2].
Both of your sources (2010, 2013) don't apply to Blackberry pre iPhone (2007). Even so, I'm speaking to brand perception rather than reality - BB may might have given out keys/built in backdoors pre 2007 and still maintained the perception of being trustworthy.
