Security? Sure. All your data possibly compromised? I guess that's an issue.
But let's be honest, when you found out that Windows 10 would be issuing an emergency patch for the Intel processor design flaw, I know what was running though most of your heads.
HOW WILL THIS IMPACT MY VIDYA GEMMES?
Thankfully, the answer so far seems to be 'not too much'. There were plenty of figures thrown around. Worst case scenario seemed to be a 30% hit on processing, but the folks over at Hardware Unboxed have done extensive testing with some of the more up-to-date processors and the hit seems to be extremely minimal, which is good!
But also sorta expected. We knew that newer processors wouldn't be impacted quite as much as the older ones, but this is still good news.