In recent years, the threat level for small and medium-sized businesses has worsened dramatically. While large corporations pour millions into IT security teams, SMEs are often left unprotected – an easy target for automated ransomware attacks (extortion trojans) and phishing.
In this article I will show you the 5 most common security vulnerabilities I encounter every day, and how you can close them with manageable effort.
1. Outdated Software & Plugins
Especially with websites (specifically WordPress) and internal tools, outdated software is the number one gateway. A plugin that hasn't seen an update in 3 years is often publicly documented as "vulnerable". Hackers use scripts that scan the net thousands of times per minute for exactly these outdated plugins.
The Solution: Implement strict update management. For WordPress this means: activate auto-updates, delete redundant plugins, and perform monthly manual checks. Even more secure: Custom Code Websites that don't use any standardized plugins at all.
2. The "Fake Backup" Illusion
A backup that lies on the same hard drive or server as the original data is absolutely worthless in the case of a ransomware trojan. The trojan simply encrypts the backup right along with it.
The Solution: The 3-2-1 rule. 3 copies of the data, on 2 different media, 1 copy of which is stored externally/offline (cloud, separate data center). And most importantly: regularly test whether the backup can actually be restored!
3. Missing Multi-Factor Authentication (MFA/2FA)
Passwords alone are no longer enough today. A phished password from a fake e-mail directly opens access to Microsoft 365, your CRM, or your servers to hackers.
The Solution: Activate multi-factor authentication (e.g. via Authenticator app on your smartphone) for all critical systems. Even if a hacker steals the password, he fails because of the missing confirmation by your smartphone.
4. The Weakest Link: The Human Factor
The most sophisticated firewall is useless if an employee clicks on the link in an e-mail that looks like an urgent invoice from the boss or an account suspension from PayPal.
The Solution: Sensitize your team! Train your employees regularly (and realistically) on recognizing phishing e-mails. Establish fixed processes for payment requests – such as a quick call for verification if e-mails contain unexpected account details.
5. Unsecured End Devices (Home Office)
Since remote work is commonplace, many employees access sensitive company data with private, unsecured laptops or via unsecured public Wi-Fi networks.
The Solution: Company access should only be granted via encrypted VPNs or directly cloud-native with strong access control (Conditional Access). Private devices on the company network (BYOD) must be strictly regulated and isolated from the main network.
My IT recommendation: Security is not a one-time setup of a firewall, but an ongoing process. A good IT supporter does not just react when there is a fire, but proactively monitors your systems for such vulnerabilities.
Conclusion: Act proactively
A cyber incident often costs tens of thousands of euros, an extreme amount of stress, and often leads to the entire operation coming to a standstill for days. A solid basic technical setup and competent IT support are investments in securing the existence of your company.
Is your IT truly secure?
Let's analyze your current IT infrastructure or website in a short initial consultation. I will show you honest vulnerabilities and pragmatic solutions.