There's a lot of hoopla floating around the major processor vulnerabilities called Meltdown and Spectre. If you still don't know, Meltdown is the name of the latest vulnerability involving Intel microprocessors, which in theory will allow hackers to steal valuable information directly from processor memory. Spectre is the same thing but extends to other processor brands including ARM. What makes this big a news is that this vulnerability has been around for over a decade meaning this vulnerability includes processors made since then. If not for ARM, the world is more or less an Intel world of home PCs, company servers and cloud platforms. A world made vulnerable, if it hasn't yet been exploited in secret.