Get it through Composer:
"valhalla/valhalla-core-utils-lib": "dev-master"
Check out the code from git:
git clone https://bitbucket.org/ynori7/valhalla-core-utils-lib.git
Or download it here:
The Valhalla Core Utils Lib has a variety of useful security tools to make it easier to secure your applications. Currently we have a module for preventing cross-site request forgery vulnerabilities.
Current Modules: