Why Software Updates Exist (And What Skipping Them Actually Risks)

More Than New Features

Most people associate software updates with new buttons, redesigned menus, or features they didn't ask for. That frustration is understandable — but it misses what's actually happening under the hood. The majority of updates, particularly for operating systems and widely used apps, are primarily about fixing things that are broken or unsafe.

Software is written by humans, which means it contains mistakes. Some of those mistakes are minor annoyances — a button that doesn't respond correctly, a file that takes too long to load. Others are more serious: gaps in the code that could allow an unauthorized person to access your data, take control of your device, or install malicious software without your knowledge. These gaps are called vulnerabilities, and closing them is the core purpose of most security-focused updates.

Understanding what's in an update also helps when choosing which ones to prioritize. Software version numbers are actually a useful signal here — a minor version increment often signals a targeted patch, while a major version number change typically means something more comprehensive is changing.

What Actually Happens When You Skip Updates

When a software company releases a patch for a security vulnerability, it does two things simultaneously: it fixes the problem for users who install the update, and it publicly signals that the vulnerability exists. Security researchers and, unfortunately, malicious actors read patch notes. Any device still running the old version becomes a known target.

This is why the risk of skipping updates grows over time rather than staying constant. On day one after a patch is released, relatively few attackers know the specific details of the flaw. By day thirty, the information is widely distributed and automated tools may already be scanning for unpatched systems.

Skipping updates can also create compatibility problems that compound over time. Apps built to work with current versions of an operating system may behave unpredictably on older ones. Features stop working, crashes become more common, and eventually some applications refuse to run at all. For context on how this escalates, our article on what end of life means for software explains what happens when updates stop entirely.

The Three Kinds of Changes Inside an Update

Not every update contains all three types of changes, but understanding the categories helps decode what's actually being delivered:

• Security patches — Targeted fixes for identified vulnerabilities. These are time-sensitive because the vulnerabilities they address are often known publicly once the patch is released.
• Bug fixes — Corrections for errors that affect functionality, stability, or performance. A bug fix might resolve a crash, fix an incorrectly calculated value, or address a feature that simply didn't work as designed.
• Feature additions or changes — New tools, redesigned interfaces, or changes to existing behavior. These are optional improvements rather than safety-critical corrections, and are the category most likely to be visible to everyday users.

Security patches are almost always the most urgent. Bug fixes improve reliability in ways users may not immediately notice but will appreciate over time. Feature changes are worth exploring at your own pace.

It's also worth noting that hardware devices have their own software layer — called firmware — that requires similar attention. Our explainer on what firmware is and why updates are worth running covers that parallel process in detail.

Making Updates Work for You

The most practical approach for most users is to enable automatic updates for operating systems and security-critical applications. This removes the decision entirely and ensures patches are applied before vulnerabilities become widely exploited.

For major version upgrades — the kind that significantly change how software looks or behaves — waiting a few days before installing is reasonable. Early adopters sometimes encounter unexpected bugs that get corrected in rapid follow-up patches. Reading brief release notes before a large upgrade can also tell you what's actually changing and whether anything affects tools you rely on daily.

One common mistake worth flagging: many people carefully manage updates on their main computer but forget that smartphones, routers, smart home devices, and other connected hardware also run software that needs regular attention. If you've ever skipped setup steps or update prompts on a new device, common gadget setup errors outlines how those early decisions can create persistent problems.

The habit of keeping software current is one of the most effective, lowest-effort actions a person can take to protect their digital life — not because it guarantees perfect security, but because it removes the most preventable risks from the equation.