Hackers late Sunday broke into CEO Sundar Pichai’s Quora account and through it accessed his Twitter followers, according to reports. The group taking credit for the breach, OurMine Security, previously hit other prominent high-tech figures, including Facebook CEO Mark Zuckerberg, Spotify CEO Daniel Elk, Amazon CTO Werner Vogels and former Twitter CEO Dick Costolo. OurMine’s goal is to improve the security of social media accounts around the world, the group has claimed.