System updates are essential to IT security. This is not a precautionary principle: every security update fixes a vulnerability that attackers could use. Deferring those updates means deliberately leaving that door open.
What a security update actually fixes
Software vendors continuously discover flaws in their products, or receive reports from security researchers. When a vulnerability is confirmed, they release a fix in the form of an update. That fix removes the path an attacker could take.
The window between a patch being published and active exploitation is short. Specialist groups analyse new updates as soon as they are released, reverse-engineer what is being fixed, and develop tools to attack unpatched systems. This race is real, and it plays out in hours, not weeks.
The different types of updates to manage
Not all updates are the same:
Security patches are the most urgent. They do not change how the software behaves; they close a vulnerability. Apply them without delay.
Functional updates bring new features and usually include security fixes. They benefit from a little testing before broad deployment.
Major operating system upgrades (moving from one Windows version to another, for instance) require more careful planning: application compatibility checks, prior backups, a dedicated maintenance window.
Why “we’ll do it later” is expensive
The reasoning feels sound: wait for the update to be stable, avoid disruption, get to it when there is time. In practice, that deferral stretches. Weeks become months, and a system unmaintained for several months accumulates dozens of known vulnerabilities.
The problem is that attackers do not wait. They continuously scan for those flaws and exploit them. A ransomware attack (malware that encrypts all your files and demands payment) can shut a business down for days, at a cost far higher than the maintenance that was being postponed.
Making updates part of a regular routine
The right approach is not to handle updates reactively. It is to have a consistent process: monitoring security bulletins, scheduled deployment, verification that every machine in the estate is current. That is exactly what structured software patch management is for.
For a small business, delegating that monitoring to an IT provider is usually the most effective solution. It ensures nothing slips through, without consuming internal time on a task that demands rigour and continuity.
To learn more about how InfraPro keeps your infrastructure secure, visit our cybersecurity page.
Written by Guillaume, InfraPro, IT partner for SMEs and nonprofits.
