For computer security professionals, 2018 started with a bang. A new class of security vulnerability — a variety of flaws that affect almost all major microprocessor chips, and that could enable hackers to steal information from personal computers as well as cloud computing services — was announced on Wednesday. The news prompted a rush of fixes, ruining the holiday vacations of system administrators worldwide.

For an ordinary computer user, there is not much to panic about right now. Just keep your software updated so you receive the fixes. And consider installing an ad-blocker like uBlock Origin to protect against ads that carry malware that could exploit these vulnerabilities. That is about all you can do.

However, as a citizen of a world in which digital technology is increasingly integrated into all objects — not just phones but also cars, baby monitors and so on — it is past time to panic.

We have built the digital world too rapidly. It was constructed layer upon layer, and many of the early layers were never meant to guard so many valuable things: our personal correspondence, our finances, the very infrastructure of our lives. Design shortcuts and other techniques for optimization — in particular, sacrificing security for speed or memory space — may have made sense when computers played a relatively small role in our lives. But those early layers are now emerging as enormous liabilities. The vulnerabilities announced last week have been around for decades, perhaps lurking unnoticed by anyone or perhaps long exploited.