At my networking meeting this week, the card pulled was Vulnerability Scanner, and this one sparked a really interesting conversation, because it’s one of those tools used by both sides.

Businesses use them to protect themselves but Cybercriminals use them to find weaknesses

Same concept – very different outcomes.

So what actually is a vulnerability scanner?

In simple terms, it’s a tool that checks your systems for weak spots, things like:
• Outdated software
• Misconfigured settings
• Known security flaws
• Systems that are accidentally exposed

Think of it like a health check for your IT.

However, Cybercriminals aren’t sitting there manually choosing targets. They’re running automated scans across the internet, constantly looking for anything they can exploit.

If your systems have a weakness and they find it before you do – that’s where problems start.

When used properly, vulnerability scanners are a huge advantage. They help you:
• Spot issues before attackers do
• Prioritise what actually needs fixing
• Stay on top of security over time
• Reduce the chances of ransomware, breaches, or disruption

When they’re NOT used, that’s when businesses get caught out. Most of the time, cyber incidents don’t come out of nowhere – they start with a weakness that could have been found earlier.

You don’t need to understand the tools, but you do need to know:
• Are your systems being checked regularly?
• Are issues actually being fixed?
• Do you have visibility of what’s exposed?

If the answer is “I’m not sure”, it’s worth asking.

The easiest way to think about this one:
Best case: You’re using scanners to find and fix problems
Worst case: Someone else is using them to find you