So if you have not heard about it by now; A low-system level vulnerability has been discovered by the folks at Google's project 0 that can affect virtually any computer built in the last 15 years or so. Meltdown and Specter are two Trojans that can exploit this bug. Very simply put; The vulnerability allows these two to sort of guess the code a processor is executing without actually needing any permissions that would typically be required, allowing it to extract information such as passwords and other data that would typically require much more sophisticated tools to acomplish. The situation is especially dire because the quick fixes that Microsoft has implemented are messing with the functionality of most Anti-Virus software, which only adds to the pile of issues this is causing. Because of that, I highly recommend you turn on Windows update, enable Windows defender and search online if the manufacturer of your Laptop or Phone or pre-build machine is offering quick fixes and patches. If anyone tells you that you are NOT affected because you rock an Intel or AMD processor or because you use a Mac - do NOT buy it. Companies are doing their best atm to perform damange control as they try to stay out of the crossfire by releasing deliberately difficult to understand information on the matter or just outright claiming they are not affected.
(I copy pasted this message, I personally dont know what to do further, I'm just spreading the news.)