Exclusive: Telegram is holding a secretive second pre-ICO sale

You have to admire Pavel Durov’s audacity.
Over the past few months, the CEO of Telegram convinced 81 accredited investors, including Silicon Valley giants Sequoia Capital and Benchmark, to give him $850 million in a presale of his company’s cryptocurrency in advance of an initial coin offering, or ICO. Now he’s trying to raise even more money from accredited investors before the coin gets offered to the public in a secretive second presale.
This week, investors got an email e