2018 brought about the news that every processor built in the last ten years have a flaw in them that could give hackers access to sensitive data. Initially believed to affect just Intel processors, the latest is that this affects every single processor made, regardless of platform.
The flaws utilizes a technique called "processor speculation," which enables the processor to speculate what the user will do next in order to accelerate performance. But the feature also gives hackers access to sensitive L2 cache data like passwords. It's especially true for networks.