Protection Against Hacker Attacks - 10 Steps for Businesses

Protecting your business from hackers does not start with an expensive tool, but with the fundamentals: enable multi-factor authentication, keep all systems regularly updated, maintain tested backups and train employees to spot phishing. These few measures block the vast majority of common attacks. Below we outline 10 concrete steps a small or medium-sized business can implement, ordered from the most important to the more advanced.

Many businesses in Mostar and across Bosnia and Herzegovina believe they are too small to be a target. The reality is the opposite: automated attacks do not pick their victims by size, but by vulnerability. Ransomware, business email compromise (BEC) and credential theft hit companies with only a handful of employees just as easily. The good news is that the risk can be dramatically reduced through a systematic approach, without huge investment.

Why protection against hackers is now mandatory for every business

The digitalisation of business means that customer data, invoices, contracts and access to bank accounts all reside online. Every one of these systems is a potential entry point. An attacker does not need to breach the firewall if an employee unwittingly hands over a password through a fake email. That is why effective protection against hackers combines technology, processes and people, and none of these three elements is sufficient on its own.

The goal is not to achieve absolute security, because it does not exist. The goal is to raise the cost of an attack high enough that the average attacker finds it more worthwhile to look for an easier target. The following 10 steps do exactly that.

How attacks usually unfold in practice

For protection to make sense, it helps to understand how a typical attack proceeds. Most incidents in small and medium-sized businesses follow a similar pattern: the attacker first gains access (most often through phishing or a stolen password), then moves laterally through the network and escalates privileges, collects data and finally executes their objective, namely encrypting systems for ransom, stealing data or redirecting payments. Each of the 10 steps below cuts this chain at one or more points. The more links you break, the harder and more expensive the attack becomes to carry out, leaving you more time to notice and stop it.

10 steps to protect your business from hacker attacks

1. Enable multi-factor authentication (MFA) everywhere

A password, no matter how strong, can be stolen through phishing or leaked from someone else's database. Multi-factor authentication adds a second step, such as a code from an app, a hardware key or a confirmation on your phone, so a stolen password alone is not enough. Enable MFA as a priority for email, VPN, administrator accounts and all cloud services. Apps such as Microsoft or Google Authenticator are free and built into most business tools. Keep in mind that not all forms of MFA are equally robust: a code sent via SMS is better than nothing, but it is vulnerable to interception and SIM swapping. Wherever possible, give preference to app-based codes or hardware keys (FIDO2) for the most sensitive accounts, particularly administrator accounts.

2. Regularly update operating systems and software

A large share of successful attacks exploit flaws for which the vendor already has a patch, but the company simply did not install it. Establish a policy of regular updates (patch management) for operating systems, browsers, plugins and business applications. Where possible, enable automatic updates. Pay particular attention to devices that are often forgotten: routers, NAS devices and CMS platforms such as WordPress.

3. Maintain tested backups following the 3-2-1 rule

Backup is the last line of defence against ransomware. The 3-2-1 rule means: three copies of your data, on two different types of media, with one copy off-site (offsite or offline). The key is regular restore testing, because a backup that cannot be restored effectively does not exist. At least one copy should be separated from the network (air-gapped) so that ransomware cannot encrypt it along with the rest of the system.

4. Train employees on phishing and social engineering

People are the most common entry point. Fake emails, messages demanding an urgent payment and calls in which someone poses as IT support remain the most effective way into a company. Regular short training sessions and simulated phishing campaigns teach employees to recognise suspicious messages. Introduce a simple rule: for any unusual financial or access request, confirmation must be sought through a second channel (for example, a phone call). A particularly dangerous form is business email compromise (BEC), where the attacker takes over or impersonates a manager's account and requests an urgent payment to a new account. Such scams are not caught by antivirus, but by a trained employee who knows to verify before clicking or paying.

5. Restrict access rights based on the principle of least privilege

Every employee should have access only to what is strictly necessary for their work. If an attacker compromises an account with minimal rights, the damage is limited. Avoid day-to-day work with administrator accounts and regularly review who has access to what, particularly for employees who have changed roles or left the company.

6. Segment your network

A flat network in which every device can see everything means that compromising one computer opens the path to all the others. Separating the network into segments (for example, guest WiFi, business workstations, servers, production/IoT devices) slows the attacker's movement and limits the scope of an incident. For smaller companies, a well-configured business router with VLAN support is sufficient.

7. Protect endpoints and use a firewall

Every laptop, desktop and server should have active endpoint protection (EDR/antivirus) and an enabled firewall. Modern EDR solutions not only block known threats, but also detect suspicious behaviour. For companies without their own team, this is often handled through managed security services (MSSP/MDR) that monitor and respond 24/7.

8. Introduce a strong password policy and a password manager

Reused and weak passwords are an invitation to attack. Instead of forcing employees to memorise dozens of combinations, introduce a password manager that generates and stores unique, long passwords for each service. Combined with MFA, this eliminates one of the most common vulnerabilities.

9. Prepare an incident response plan

The question is not whether an incident will happen, but when. An incident response plan defines in advance who calls whom, how infected systems are isolated, where the backups are and what the legal reporting obligations are. A company with a plan responds in hours rather than days, and with ransomware, time is directly linked to cost. The plan does not have to be a lengthy document; a clear, tested procedure a few pages long is enough. A minimal plan answers a few key questions: who makes the decisions and who is notified first, how infected devices are quickly isolated, where the backups are and how they are restored, and what the legal and contractual reporting obligations are (for example, to the competent authorities and affected customers). It is useful to run a short simulation (a so-called tabletop exercise) once a year to confirm that everyone knows their role under pressure.

10. Regularly test your security with penetration testing

Everything above should be verified from the attacker's perspective. Penetration testing (pentest) is a controlled, authorised attack on your systems that uncovers real vulnerabilities before someone with malicious intent does. Unlike an automated scan, a pentest combines flaws into realistic scenarios and provides a concrete remediation plan. If you are not sure where to start, fill out the short penetration testing questionnaire and you will receive a scope assessment.

Prioritisation: where to start if you have a limited budget

Not everything has to be implemented at once. The following table groups the steps by the ratio of effort invested to protection gained, which helps small companies in the region decide on the order.

Priority	Measure	Effort / cost	Impact on risk
Immediately	MFA on email and key accounts	Low	Very high
Immediately	Updates and patches	Low	High
Immediately	Tested backup (3-2-1)	Medium	Very high
Short term	Phishing training	Low	High
Short term	Password manager and access rights	Low	Medium to high
Medium term	EDR and network segmentation	Medium	High
Medium term	Incident response plan	Medium	High (reduces damage)
Periodically	Penetration testing	Medium to higher	High (validates everything)

Specifics for businesses in Bosnia and Herzegovina and the region

Small and medium-sized businesses in Bosnia and Herzegovina often operate without their own IT department, relying on a single external IT contractor or on an employee who handles security on the side. This is not necessarily a problem if the basic processes are in place and if someone regularly checks that backups are being made and that systems are being updated. The problem arises when security is left to chance.

Another common challenge is working with a supply chain and clients from the EU, where a growing number of contracts require a demonstrable level of security. Companies doing business with partners abroad increasingly receive security questionnaires and personal data protection obligations. Implementing the steps listed above and, where relevant, preparing for a standard such as ISO 27001 does not only serve protection, but also becomes a business advantage that opens doors with more demanding clients. For companies in Mostar and the surrounding area that want local support in their native language, working with a domestic team shortens response time and makes it easier to understand the context.

The most common mistakes businesses make

• Believing that antivirus is enough. Antivirus is one layer; serious protection is multi-layered.
• A backup that is never tested. Many companies discover that their backup does not work only when they need it.
• Forgotten devices and accounts. Old servers, former employees and unused services are a silent door for attackers.
• Treating security as a one-off project. Threats change, so protection requires regular maintenance and re-testing.

How NeoBit can help you

NeoBit is a cyber security company from Mostar that helps businesses in Bosnia and Herzegovina and the region apply exactly this approach: from penetration testing and vulnerability assessment, through Guardian 360 SOC monitoring and incident response, to ISO 27001 preparation. If you want to know where your greatest risk currently lies, the best first step is a conversation about the specific situation of your company. Contact our team and arrange a free initial assessment.

Frequently asked questions

What is the single most important hacker protection measure for a small business?

If you can implement only one thing right away, make it multi-factor authentication (MFA) on email and key accounts. It blocks a huge share of attacks based on stolen passwords. Right alongside it come regular updates and a tested backup following the 3-2-1 rule.

How much does protection against hacker attacks cost for a business?

Most of the basic measures, such as MFA, updates, a password manager and training, are almost free and mainly require time and discipline. Larger costs (EDR, managed monitoring, pentest) scale with the size of the company and the sensitivity of the data. An approach where the cheap measures with the greatest impact are introduced first usually delivers the best ratio of investment to protection.

Does a small business need penetration testing?

Yes, if the company stores sensitive data, does business online or has legal obligations towards clients. A pentest uncovers real, exploitable vulnerabilities before attackers do and provides a concrete remediation plan. For smaller companies, a targeted test of key systems is often enough instead of a comprehensive assessment, which keeps the cost reasonable.

What should we do if we suspect we have already been hacked?

Isolate the affected devices from the network, but do not shut them down abruptly, as this can destroy evidence. Change passwords from a clean device, notify the responsible people and contact incident response specialists. Do not pay the ransom before consulting experts, because there are often other options, and paying does not guarantee that your data will be recovered.

Related guides: Cyber security in Bosnia and Herzegovina - complete guide · Ransomware protection: how to protect your business from attacks · How to recognise a phishing attack - a guide for employees