The Great Twitter Hack has exposed the precarity of our online existence

Audacious hijacking of celebrities’ and politicians’ accounts has become an instant emblem of our times
Twitter chief executive Jack Dorsey must reckon with a security breach where prominent Democrats were targeted but Donald Trump, a heavy Twitter user, was not © FT montage; Bloomberg; Getty Images

Sometimes, a security breach is so startling in its reach and audacity that it becomes a stark reminder of the precarious nature of our collective dependence on computer systems. The particular nature of the attack also serves as a commentary on the times.