Twitter CEO Jack Dorsey latest victim of OurMine hacking group

Twitter chief Jack Dorsey is the latest high-profile tech boss to have his account compromised by hacking group OurMine. 
Joining the likes of Facebook's Mark Zuckerberg and Google chief Sundar Pichai, Dorsey was targeted by the cyber attackers on Saturday morning (9 July), with the group taking over his Vine account and sharing the content to his Twitter feed. 
The hackers posted several video clips, as well as a tweet reading: "Hey, it's OurMine, we are testi