It's because of this: https://github.com/blog/1477-content-security-policy https://github.com/blog/1477-content-security-policy This might also be of interest:

It's because of this: https://github.com/blog/1477-content-security-policy https://github.com/blog/1477-content-security-policy This might also be of interest: https://github.com/blog/1482-heads-up-nosniff-header-support-coming-to-chrome-and-firefox https://github.com/blog/1482-heads-up-nosniff-header-support...