Alexandre Sieira

CTO and Co-founder of Tenchi Security

Alexandre Sieira is a successful global cybersecurity entrepreneur with a career spanning since 2003.

He began as Co-founder and CTO of Cipher, a Brazilian cybersecurity consulting and MSSP firm with international operations, which was later acquired by the Prosegur Group.

In 2015, he became Co-founder and CTO of Niddel, a cloud-native SaaS startup focused on security analytics. Niddel was recognized as a Gartner Cool Vendor in 2016. Following its acquisition by Verizon, Sieira led the Product Management team responsible for all detection products.

He is currently the CTO and Co-founder of Tenchi Security, a company specializing in third-party cyber risk management.