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Welcome to


We are a bunch of like-minded individuals who have done independent security consulting in the past. In 2018, we decided to come together under the roof of Casteblack Consulting to offer streamlined Security Consulting services. We are experts in the field of info-sec with years of experience in helping developers make secure products. Visit our blog to read more about our work.

The collective goal of Castleblack Consulting is to provide top-notch security consulting at an affordable cost. The latter half of this decade has truly been an internet age. Businesses are coming up with an endless supply of products for the ever demanding end users who are consuming data and services at a rapid rate more than ever. We want to make sure that Security Consulting services are accessible and affordable to everyone building a product.

Varun, born and raised from South India, started his corporate journey when he stepped into Infosys Ltd. in 2011 as a support engineer. In 2014, he pursued his post-graduation in business management with an enriching experience. His corporate journey resumed with Freshworks Inc. as a Customer Success Manager. He strongly believes that success of any business is all about collaboration with people since “people matter the most”; learning is like being a “Lifelong Student”, key focus should be on the capability to unlearn; everyone has “Unique Capabilities” that can inspire others for betterment.


An alumni from Chalmers University of Technology, a software engineer for Ericsson  

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Venkatesan hails from Chennai. His contribution to technology and consulting industry started when he joined Infosys Ltd in 2011. His specialization in Electrical Engineering did not restrict him from exploring technology. Learning a new technology was always exciting for him, thanks to his analytical and problem solving skills. Completed his Masters in Management in one of top B-school in India in 2016. His contribution continued in Grant Thornton, a management consulting firm for two and a half years as a business risk advisory consultant where he primarily explored areas around internal audit, risk assessment and control testing. He stands out for his Empathy.

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An alumni of TAPMI, ex- BUSINESS RISK ADVISORY professional from Grant Thornton, ex- mainframe techie from Infosys Ltd.

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Sathya Prakash is an Information Security Expert with over 10 years of experience in building, breaking, and protecting software systems. He has a Masters degree in Computer Science from the Chalmers University of Technology. Before founding Castleblack Consulting, he was an independent security consultant; he has also held senior roles at a number of technology firms such as Ericsson and Volvo Group.

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