The little "update available" prompt is one of the most reflexively dismissed messages in modern life. It arrives at inconvenient moments, it interrupts, and "remind me later" is right there. Yet behind a large share of those updates is a security fix for a hole that criminals are actively exploiting — which makes "later" a surprisingly expensive habit.
Software is written by humans and therefore contains mistakes, some of which are security vulnerabilities. When one is discovered, the vendor issues a patch. The gap between a patch being released and you installing it is precisely the window attackers race to exploit.
The race you are unknowingly in
Here is the uncomfortable dynamic: when a security update ships, its release effectively announces to the world that a vulnerability existed. Attackers study the patch to understand the flaw, then hunt for devices that have not yet applied it. Unpatched, out-of-date software is the low-hanging fruit of the internet — the equivalent of a house with a known-faulty lock and a sign advertising it.
This is why the biggest, most damaging attacks so often spread through vulnerabilities that had already been patched weeks or months earlier. The fix existed; the victims just had not installed it.
Make updates painless
The solution is to remove yourself from the decision. Turn on automatic updates for your operating system, your browser, and your apps wherever the option exists, so patches install quietly without you needing to act on every prompt. For most people, most of the time, automatic updating is safer than manual caution, because it closes the window before attackers can use it.
Schedule any updates that require a restart for a convenient time rather than declining them repeatedly, and do not run software so old that it no longer receives security updates at all — unsupported systems are permanently unlocked doors.
The one caveat
Balanced honesty: updates occasionally introduce new bugs, and very rarely a bad update causes problems. That real but small risk is why some cautious users wait a day or two on major upgrades. But for routine security patches, the maths is overwhelmingly in favour of applying promptly — the danger of the known, unpatched hole vastly outweighs the danger of a rare faulty fix.
Reframe the prompt in your mind: it is not an interruption, it is the vendor handing you a fix for a lock criminals already know how to pick. Seen that way, "install now" is usually the cheap choice and "later" the expensive one.