XDA Recognized Developer dsb9938 has released an insecure boot kernel for the HTC Droid DNA. For those who have never used one, such a kernel allows you to have root access when accessing your phone via ADB. As explained by dsb9938 himself:
This is simply modified to allow root in adb connections.
You must unlock on the HTCDev site first.
Then unzip and flash the file using fastboot (fastboot flash boot unsecure.DNA.stock.boot.img)
Then reboot, and when you adb in you are root.
While the most common use of an insecure boot is to obtain root access to the device, and that was indeed the impetus behind this release, they can still come in handy for device modification performed directly from your computer via ADB.
For more details, check out the original thread.
Update: Since HTC withdrew the unlock for the DNA, this method no longer works._________