When I try to download SAFE Browser 0.3.0 from this link Release SAFE Browser 0.3.0 · maidsafe/sn_browser · GitHub
Firefox gives me the following warning
This web page at github-production-release-asset-2e65be.s3.amazonaws.com has been reported as a deceptive site and has been blocked based on your security preferences.
Deceptive sites are designed to trick you into doing something dangerous, like installing software, or revealing your personal information, like passwords, phone numbers or credit cards.
Entering any information on this web page may result in identity theft or other fraud.