The checksums below are a simple way for you to double-check the copy of Jaxx you are installing is genuine. You can match the checksum in your instance of Jaxx with the data below.
$ shasum -a 256 Jaxx.Liberty-2.4.3.dmg
f0225db3007a0e207fbdc908f601be97522cb69759665f2e5e5fdbac7115a179Download for Mac
$ certutil -hashfile Jaxx.Liberty-setup-2.4.3.exe sha256
d74f1b41102c7cc3d826c071d3f579437791c4f72b065327da14f9c23f3541ebDownload for Windows
$ shasum -a 256 Jaxx.Liberty-2.4.3-i386.AppImage
eaaab27cdb652f8a75e98a80f5f73450c0c72a0f58496b9df0de66db9ebd5060Download for Linux 32
$ shasum -a 256 Jaxx.Liberty-2.4.3.AppImage
748b4b6d6f3d7f865bf80d02eb490b55a055fa9fadcdecf747275f3a3293622eDownload for Linux 64
*Mac OS X Note: Depending on your system settings, the system might warn you that "Jaxx can't be opened because it comes from an unidentified developer." You can either change your system settings to allow apps from unknown developers in your "Security & Privacy" settings, or simply right click Jaxx → Open (as administrator), which will prompt you with a warning.