I have used the ability to write to /proc/pid/mem to TEST safety-critical software intended for deployment on Linux systems. The apps I wrote were designed to

I have used the ability to write to /proc/pid/mem to TEST safety-critical software intended for deployment on Linux systems. The apps I wrote were designed to ensure that altered binaries were not being run on the target system - in order to test the effectiveness of this "TEXT Segment check", I wrote many test cases to overwrite memory using this mechanism. Its useful in that context.