SOURCE OF ENTREPRENEURS on Instagram: "Robert Herjavec sold his first major company - BRAK Systems - for about $30 million in cash to AT&T Canada in 2000. Herjavec started BRAK Systems in the 1990s as a computer-security and internet-security business. At the time, cybersecurity was just beginning to matter for large companies, and Herjavec built his business into a trusted provider of firewalls and network protection solutions. By the late 1990s, BRAK was doing well enough that AT&T Canada boug