Aged 10, and freshly arrived in the UK, Husayn Kassai watched his parents struggle to prove their identity. A couple of years later, he “borrowed” his sister’s ID to set up an eBay business that did a roaring trade selling CDs online. These two experiences helped plant the seeds of the idea that, a decade later, would become Onfido, a global leader in identity verification and fraud protection, which he co-founded and - until recently - ran.