In November, TechCrunch broke the news that cybersecurity startup Upwind was getting a lot of inbound interest to raise money on a big valuation. Now, we can confirm that the deal is done: Upwind has closed a Series A round of $100 million. The company confirmed that the round values it at $900 million post-money. Craft Ventures, the investment company started by David Sacks, is leading the deal, with TCV, Alta Park Capital and all of Upwind’s previous backers participating. Past investors inclu...