John Randles, CEO of Galway cybersecurity business Siren, talks about how a business that began life as a PhD research project has blossomed into a business that recently reported 162% revenue growth as well as its first patent. Irish cybersecurity business Siren has raised €12m in backing from the European Investment Back to fight cybercrime. Randles talks about his career at the helm of indigenous Irish tech firms and why he believes the sector’s best days lie ahead.

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