In partnership between TNO Singapore and Singapore University of Technology and Design (SUTD), we are working on a Blockchain Security by Design framework: BLOCKTEST. This framework will help blockchain developers to have security measures in mind when designing blockchain applications. The team in Singapore is compiling a blockchain vulnerability and defence catalogue to collate all the openly published incidents into a database. This helps everyone to identify the mechanisms that adversaries use for their attacks. After which, use cases are run in a testbed environment to understand how mutated scripts behave. Having gained this knowledge, the team will design a framework on how an enhanced secured blockchain infrastructure can be implemented.