Vulnerability scanning

A vulnerability scanner checks your own systems for the weaknesses attackers look for first: missing security updates, software with known flaws, open remote access ports, default passwords and risky settings. It produces a list of findings, ranked by severity, that tells you what to patch or change. For a small business, a regular scan is one of the cheapest ways to find out what is exposed before someone else does.

Scanners come in a few kinds. Network scanners probe devices on your office network or on the internet, such as servers, firewalls, printers and cameras. External scanners focus on what is reachable from outside: your website, mail server, VPN and any forgotten test systems. Web application scanners look at a website's own code for flaws such as injection. Code and cloud scanners check software your team writes, the open source packages it uses and the settings of cloud accounts.

Scans with credentials give much better results. If the scanner can log in to a machine, it can read the installed software and its versions directly instead of guessing from the outside. Some products also offer a lightweight agent that reports from laptops that are rarely in the office.

AI in this category is mostly used to sort and explain findings. A first scan can produce hundreds of results, and many matter little. Tools here rank flaws by how likely they are to be attacked, using data on which ones are exploited in the wild, group related findings, and write plain explanations and fix steps.

When you compare tools, decide what you need to scan. A company with one office network and a website needs something different from a company that writes its own software. Check how the tool finds assets, so new devices are not missed, how reports look for the person who will fix things, and whether it can open tickets in the system your team or MSP already uses.