Geneva-based ProtonMail offers a full, end-to-end encrypted email service. It raised more than US$500,000 last year after a crowdfunding campaign that sought just $100,000. The company was extorted by one group of attackers, then taken offline in a large distributed denial-of-service attack by a second group that it suspects may be state sponsored. The second, 100Gps-attack brought down the ISP, its routers and data center, causing problems for other companies.”]