I have noticed for a few months that my mouse will randomly jerk across the screen. I'm super paranoid about security. But this is just silly!

Has anyone else experienced this, and found out what causes it? It happens to me every couple of days. The cursor will jump across the screen about 1000+ pixels. I thought it was my mousepad - changed it, and that's not it.

I imagine it's just a hardware issue.

This is on a PC with a Razer Naga, wired mouse. The mouse worked for about a year before I started noticing these issues. They have persisted even after a reformat / reinstall.