One unresolved problem with the web is the detection of bots, programs that drive a web browser to emulate human behavior. Bot detection is an issue in web development because automated tools can reduce the user experience, such as a bot which responds to Twitter posts with angry messages. During a research internship as Brave, a privacy-focused web browser, we worked on a new client-side approach to detect user humanity.

Scribble is a garbage collected programming language with a reference implementation including a full compiler, intermediate representation and reference virtual machine. The language was designed to make extending existing C++ applications easier and to enable users to extend a programs functionality, increasing the usefulness of a piece of software. The implementation also attempts to reduce the likelihood of security issues by allowing developers to strictly control what functionality the virtual machine exposes to the end user through a simple interface, allowing them to control what access the scripts will have to the host platform.