Day: August 25, 2025

There comes a time for every small business when you become the target of hackers. Most hacking campaigns are a collaboration of cyber-criminals across continents, so they know about vulnerabilities, human nature, and the statistically higher chance that your small business doesn’t have the resources to stop advanced threats. At some point in your business operations, a cyber-criminal will exploit a vulnerability. This vulnerability could be human error, improperly configured cybersecurity infrastructure, bugs in your system, outdated software, or a simple email with a malicious attachment. Whatever the cause, the time it takes you to discover and contain a threat is critical to your business. IBM’s 2025 Cost of a Data Breach report says that the average global cost of a data breach is $4.4 million. These costs include litigation, incident response, changes to cybersecurity infrastructure, loss of reputation, and reparations. It should be noted that litigation could last for years, making it a stressful time for small business owners. Target’s infamous data breach happened in 2013, and a settlement wasn’t reached until 2017. Ideally, you have a disaster recovery plan in place when you experience an incident. An “incident” is anything from malware to an employee disclosing their network credentials. It could involve physical or virtual breaches. The first step in incident response is discovery, which hopefully you have a good monitoring solution to find threats fast. Without monitoring, it could take months before you realize you have a threat on your environment, and it could do irreparable damage to your data integrity and customer privacy. The steps we provide here are a good starting point for small business owners who realize they have a threat on their environment. If you have a disaster recovery plan, you should reference it and follow it, usually starting with notifications for a hierarchy of stakeholders and decision makers. If you don’t have help yet for an incident, here are some steps you can take to limit damage to your small business data. Isolate the Computer or Device from the Environment Have you ever accidentally downloaded a malicious executable, and antivirus software stops you and puts it in a special folder? In essence, your antivirus software is isolating the malware to protect your computer and the environment. You need to do the same with any threat. This step can be difficult if you don’t know how to isolate it, so the best immediate strategy is to disconnect the computer from Wi-Fi, the network, and the internet. Disconnect the Ethernet cable and turn off Wi-Fi. This will stop the threat from spreading to other machines. Unfortunately, it’s possible that the threat has already spread, but the sooner you disconnect the affected device, the better. For example, ransomware will scan the network for important files and encrypt them with an irreversible cipher. If this happens to you, you’ll need to restore data with a backup, which is a good example of the importance of backups in your standard IT procedures. As a last resort, you might need to remove the entire environment from the internet. This step is like using a sledgehammer for a nail, but it might be necessary in an emergency. You’ll stop most malware from “phoning home” to communicate with a hacker-controlled server, but you destroy your productivity if employees need the internet. If you have the training, you could isolate the network segment affected and leave the others to continue productivity. Do this step only if you have no choice and can’t stop the threat on a single device. To summarize: Disable Affected Accounts In many data breaches, an attacker obtains sensitive credentials from employees. Attackers use numerous methods to get these credentials, including malicious emails (e.g., phishing), social engineering, or obtaining passwords from other hacked accounts. If your employees use the same passwords for your network as they do on third-party sites, your network could be vulnerable. Cyber-criminals use legitimate network credentials to install malware or steal data from corporate resources. After you isolate the threat, you might find that a specific user account is compromised. First, disable the account. This will give you time to gather information on the severity of the data breach. Don’t delete the account. It could interfere with collection of evidence, which you will need for law enforcement. If the account is tied to sensitive information like accounting, make sure you change passwords on these platforms but only with a machine that you know isn’t compromised. Any trojans or keyloggers would obtain access to new passwords, so change passwords on a machine you know is clean. To summarize: Determine the Source of the Breach Now that the threat is contained and can’t spread using network user accounts, you must determine the source of the data breach. This is important to avoid having the same issue happen over again. You also need it to determine if you fully eradicate it. For example, if you restore data after a ransomware attack but the ransomware persists on the network, you will just suffer from the same incident. Verizon reports that 60% of data breaches stem from human error. Employees are often your weakest cybersecurity link, so education is important. You must find out if human error was involved or your cybersecurity infrastructure failed. This step might take the help of a professional cybersecurity consultant, but most human error based incidents can be linked to an account.  During your research, you should also log all customer accounts affected by the breach. To comply with certain regulatory standards, you might be required to notify users of their data being disclosed to a third party. For example, if user credit card data was disclosed in the breach, you might be required to send an email to these customers. To summarize: Restore Data from Backups Hopefully, at this point in your incident response, you have backups to restore data. The faster you get to this point, the less money you lose in downtime. Your backups should also have enough data in