LineageOS and Ghost — makers of open-source software — grappled with security incidents over the weekend.
It is the latest effort by the tech giant to bolster election security.
There is a vulnerability in the NSA's reverse engineering tool. But it would take an incredible scenario for it impact anyone.
The work is the culmination of seven years worth of research into the security of firmware.
The spy agency says it has listened to feedback from users and is integrating some of those ideas into the software.
Anne Neuberger, who is leading the intelligence agency's task force on Russian election interference, will become the NSA's first director for cybersecurity.