Jack Dorsey


Born November 19, 1976.

He is the co-founder of Twitter and Square. Before he joined the world of successful entrepreneurs he was a computer hacker. He got his job at DMS by finding a security hole in their systems, using one of the administrators' email address and sending them the email. The email consisted of the hole and how to fix it. He did make sure to note that he did it with good intent so later he got a call from them and they offered him a job.


He went to MIT but later went to New York to study.

He worked of dispatch software for taxi cabs which is still being used today.