Customer data, invoicing, email and cloud applications are now the heart of every business. If they stop working or leak, work stops too. That is why cybersecurity is no longer a technical matter left to "the computer person". It is a matter of business continuity.
Why small and medium businesses are targets
Many owners believe a small company is of no interest to attackers. In practice, most attacks are automated and simply look for vulnerable systems, not specific names. A small business often lacks up-to-date systems, backups or someone watching what happens on the network.
One wrong click on a malicious link is enough to start a serious incident. The results can be encrypted files, lost data, days of downtime, GDPR fines and customers who lose their trust.
The most common threats
- Phishing: emails or texts that pose as a bank, courier or partner and ask for passwords or payment.
- Ransomware: malicious software that encrypts your files and demands a ransom to return them.
- Compromised passwords: the same or a weak password on many services, with no two-factor authentication.
- Invoice fraud: a fake email that changes a supplier's IBAN just before payment.
- Out-of-date systems: old Windows, routers with default settings, forgotten plugins on the website.
Antivirus is not enough
Security is not a product you install once. It is the mix of technology, clear procedures and people who know what to watch for. If one of the three is missing, the other two are not enough.
Modern endpoint protection blocks many known threats. But it cannot stop an employee who types their password into a fake login page, and it cannot restore files that were never backed up.
The basic measures for every business
- Turn on two-factor authentication (MFA) for email, Microsoft 365 and every cloud application.
- Keep backups using the 3-2-1 rule: three copies, on two different media, one off-site or offline.
- Update operating systems, applications, and router and firewall firmware regularly.
- Give each user only the rights they need. Do not use administrator accounts for everyday work.
- Split the network with VLANs: staff, guests and cameras in separate segments.
- Use a password manager instead of notes and Excel files.
Once a year, actually try to restore a file or folder from your backup. If a backup has not been tested, you do not know whether it works.
People are the first line of defence
Most attacks start with a message that looks harmless. Short staff training with real phishing examples makes a big difference. It is just as important that everyone knows who to report anything suspicious to, without fear of being blamed.
Also set a simple rule for payments. Any change to a supplier's bank account is confirmed by phone on a known number, not the one in the email.
A plan for when an incident happens
No one can promise complete security. But you can be prepared, so that an incident costs hours rather than weeks. Write down on one page what you do if ransomware strikes or an account is compromised.
- Who disconnects infected computers from the network.
- Who you call for technical help and where the contact details are kept.
- Where data is restored from and in what order.
- When and how the Hellenic Data Protection Authority and customers are informed if personal data has leaked.
Keep a printed copy of the plan and the key phone numbers. In a serious incident, your computers may not be available.
Do not forget email and your website
Business email is the most common route for fraud. SPF, DKIM and DMARC records on your domain make it harder for anyone to send messages in your name. Your website also needs updates, SSL and backups, because a compromised site can be used to attack your own customers.
Where to start
The first step is a risk assessment: what data you have, where it is, who has access and what happens if it is lost. From there you get a realistic, prioritised plan that fits your size and budget.
CyberSpace Dynamics helps small and medium businesses find their weak points and put measures in place in the right order, from firewalls and backups to staff training. Security is not a cost. It is an investment in your reliability and in your customers' trust.