Types of Cybersecurity Threats: How SMBs Recognize and Combat Cybercrime

For small businesses, cybercrime is not an abstract concept. Cybercriminals are always on the lookout, employing various methods of attack. Their objectives can vary, with money being the primary goal, which leads to a range of consequences for your business.

This year alone, Hiscox reported that 56% of small businesses in the United States experienced at least one cyberattack, leaving these companies facing approximately $300,000 in recovery expenses, not to mention weeks of downtime and the loss of customers.

Businesses then need to understand what they're facing: the different ways attackers target SMBs, how they work, and why some industries get targeted harder than others. Recognize the attack, and you're halfway to stopping it. Let's dive in.

What Is a Cyberthreat?

A cyber threat is anything that could potentially harm a computer system or network by accessing, stealing, changing, or destroying information, or disrupting services. These incidents can affect a business’s operations, assets, reputation, or people. A cyberattack is no longer the possibility of cybercriminal exploiting a system weakness to compromise your data, but the execution of the threat to cause damage.

This definition may sound simplistic, but it becomes relevant when you put it in context: an attacker breaks into your accounting software and reroutes a $50,000 vendor payment to their account. An employee clicks a link in an email that looks like it's from your bank, and three days later, your entire network is encrypted and demanding ransom. Your company's data appears for sale on the dark web.

The thing about cyber threats is that they are latent, attackers rely on the invisibility. They want to get in, stay quiet, and either steal what they came for or wait for the moment to strike. Recognition starts with knowing what these attacks look like. As long as your system remains unprepared, the risk only grows with each passing day.

Types of Cyberattacks

Attackers use different tools and tactics depending on what they want from you. Understanding these types of cyberattacks gives you a fighting chance to spot them before they do real damage.

Malware

Malware is an umbrella term for software designed to damage or exploit your systems without your knowledge or consent. There are dozens of different threats, and each one works differently. Here are the ones hitting SMBs most often:

• Ransomware locks or encrypts your files and holds them hostage. The attacker demands payment in exchange for a decryption key. The frightening part: they often make copies of your data before encrypting it and threaten to release it publicly if you don't pay. We've seen manufacturers shut down production lines for weeks because ransomware encrypted their scheduling and inventory systems.

Learn more: Does Paying Ransomware Work?

• Infostealers work quietly in the background, collecting login credentials, financial data, and browsing history. Your team has no idea they're running. The stolen data gets sold to other criminals or used to launch follow-up attacks. InfostealerPC, PureLogs, and Lumma Stealer are among the most common variants we see targeting SMBs right now.
• Trojans disguise themselves as something legitimate. You download what looks like a software update, or you install a cracked copy of software someone shared, and you've just invited a trojan into your network. Once inside, it can install other malware, open backdoors for attackers, or steal data directly.
• Spyware and keyloggers record every keystroke, every password, every conversation. They're often installed by insiders or bundled with seemingly innocent downloads. A keylogger running on your finance manager's computer means the attacker now has access to every password they type.
• Remote access trojans (RATs) like Agent Tesla give attackers direct control over your computer as if they were sitting at the keyboard. They can see your screen, move your mouse, open files, change settings, or delete data. This is how many ransomware attacks begin: the RAT opens the door, and other malware walks through.
• Cryptojacking secretly uses your computing power to mine cryptocurrency. Your computers slow down. Your team gets frustrated with performance. You think it's a hardware problem. Meanwhile, an attacker is generating passive income from your electricity bill and processing power.

The broader category of malware also includes viruses (self-replicating code), worms (network-spreading code), bots (compromised computers controlled remotely), rootkits (deep system-level malware that hides other threats), and adware (unwanted advertising software that tracks behavior).

Phishing

Phishing is social engineering disguised as a email or message. An attacker sends an email that looks like it's from your bank, your cloud provider, your email system, or even someone inside your company. The email creates urgency ("Your account has been compromised—verify now") or appeals to you ("Click here to see who looked at your profile"). You click. You enter your password or download an attachment. The attacker now has your credentials or has installed malware.

Phishing comes in variants:

• Spear phishing targets specific people inside your organization, often researched through LinkedIn or social media.
• Whaling targets executives directly, usually with sophisticated messages designed to seem like they come from the CEO or a board member.
• Baiting leaves infected USB drives in parking lots or break rooms, hoping someone plugs them in.
• Pretexting builds a fake scenario ("I'm calling from your internet provider to verify your account") to extract information.

LEARN MORE: How to Protect Your Business From Callback Phishing

What makes phishing so effective is that it exploits human judgment. That's why no amount of firewalls stops it completely. Your team has to recognize when an email isn't quite right, even when the attacker put real effort into making it look legitimate.

Network Attacks

Network attacks target the infrastructure that connects your systems and data. They don't require malware or social engineering. They're pure network mechanics.

• Denial of service (DoS) and distributed denial of service (DDoS) attacks flood your network with so much traffic that legitimate requests can't get through. Imagine a store so packed with people that real customers can't enter. That's a DDoS. An attacker or botnet sends thousands of requests per second, overwhelming your servers and taking your systems offline. Manufacturing companies and service providers are frequent targets because a few hours of downtime disrupts their entire operation.
• Man-in-the-middle (MITM) attacks intercept communication between two parties without either knowing it. Your team connects to what they think is your secure VPN. Actually, it's a fake network the attacker set up. Every login, every file transfer, every password goes through the attacker's computer. They now have everything.
• DNS and IP spoofing redirects traffic to fake servers. You type in your banking website's URL and think you're on your bank's site. You're actually on the attacker's site, which looks identical. You log in. Your credentials get stolen. Or your domain name system gets poisoned so that when employees try to reach your network, they hit a fake server instead.

Vulnerability Exploitation Attacks

Vulnerabilities are cracks in software, such as a design flaw, a coding mistake, or a configuration error that was never patched. An attacker exploits these to get in.

• SQL injection: attackers insert malicious code into a web form to trick the software into revealing or modifying information stored in a database.
• Cross-site scripting (XSS): embeds malicious code in web pages.
• Cross-site request forgery (CSRF): tricks a user into making an unintended action on a website they're already logged into.
• Session hijacking: attackers steal a user's active login session to access an account pretending to be the logged-in user.
• Zero-day exploits: attacks that target vulnerabilities nobody knows about yet. Attackers find the crack before the software company does, and there's no patch to install. Zero-day exploits are rare and valuable, so they're usually aimed at high-value targets or used sparingly. But they happen.

Most vulnerability exploitation attacks target software that hasn't been updated. That's why patch management matters so much. The majority of breaches could have been prevented by installing software updates when they were released.

Other Types of Cybersecurity Attacks

Insider threats come from people inside your organization:

• A disgruntled employee copies sensitive data before they leave.
• A contractor with legitimate access installs malware. Insider threats are harder to detect because the person has legitimate reasons to access the systems they're compromising. Monitoring and access controls matter here.
• Supply chain attacks don't target you directly. They target a vendor or software provider you rely on. The attacker compromises the vendor's systems or their software update process and uses that foothold to reach you and other customers. You did everything right on your end. Your vendor didn't.
• Data breaches happen when attackers gain unauthorized access to your data. The data might be customer information, employee records, financial data, or intellectual property. A breach doesn't always mean data was stolen. But often it was, and you may not know for months.
• Watering hole attacks compromise a website your team visits regularly. When your people visit that site, they get infected with malware. It's like a predator positioning itself near the watering hole where prey comes to drink.
• Credential attacks use stolen or guessed passwords. Brute force attacks try thousands of passwords per second until one works. Password spraying tries common passwords against many user accounts. Credential stuffing tests stolen login combinations across different websites, banking on password reuse. These attacks work because passwords are still the main way we prove who we are online.

Business Impact of a Cyberattack

The impact depends on what attackers wanted and what you were running when they got in. But there's a pattern.

Financial loss is the most visible. Ransomware payments range from $5,000 for small attacks to hundreds of thousands for larger ones. That's before recovery costs. Recovery means hiring incident response specialists ($5,000 to $50,000), rebuilding systems from scratch (weeks of work), notifying customers if their data was compromised (legal fees, notification costs), and dealing with potential lawsuits. The average data breach costs a small business $200,000 once all costs are added up.

Operational disruption can be worse than the financial hit. Ransomware brings your business to a halt. You can't access files, can't process orders, can't send invoices. For manufacturing, a few hours of downtime means missed production and angry customers. For professional services, downtime is literally lost billing hours. A week offline can take months to recover from in lost revenue alone.

Reputation damage is harder to quantify but real. Your customers learn that you were breached and their data may have been compromised. Trust erodes. Some customers leave. Getting them back takes time and expense. Competitors use it against you. Your brand takes a hit.

Regulatory consequences pile on for businesses in regulated industries. Healthcare companies must comply with HIPAA. Financial services firms answer to federal regulators. Manufacturers working with government contractors face compliance audits. A breach triggers investigations, fines, and mandatory remediation.

Operational recovery takes longer than you expect. Even after you remove the malware and restore from backups, your team spends weeks hunting for evidence of what happened, ensuring the attacker can't come back, and implementing new controls. That's weeks of time your team isn't doing their actual job.

How to Protect Your Business

You can't eliminate cyberattack risk completely. But you can reduce it dramatically with a layered approach.

Technology is the foundation. Multi-factor authentication (MFA) on critical accounts stops most phishing attacks because even if credentials are stolen, attackers can't log in without the second factor. Email filtering catches 90% of phishing emails before they reach your team. Antivirus and endpoint detection software stop known malware. Firewalls and network segmentation limit what an attacker can reach once they're in. Backups, stored offline, let you recover from ransomware. Patch management keeps software updated so vulnerabilities don't sit open.

But technology alone isn't enough because attacks exploit human judgment, not just software flaws.

• Training and awareness matter as much as technology. Your team needs to recognize when an email isn't quite right, when a request is suspicious, when something doesn't smell right. Regular phishing simulations (safe fake phishing emails) train people to think before they click. Security policies tell them what they should and shouldn't do with passwords, devices, and company data.
• Monitoring and detection catch attacks in progress. This is where reactive IT and proactive managed cybersecurity differ. Reactive IT responds when something breaks. Proactive monitoring watches for suspicious activity 24/7: unusual login attempts, files being accessed at strange hours, unexpected network traffic. When something looks wrong, alerts go out and someone investigates.
• Incident response planning ensures you know what to do if an attack happens. Who do you call first? How do you contain it? Who notifies customers? What's your communication plan? Companies with a plan recover faster and lose less data than companies scrambling to figure out what to do in the moment.
• Access controls ensure people only have access to what they actually need. Your receptionist doesn't need access to financial records. Your marketing team doesn't need access to customer data. This is the principle of least privilege. If a receptionist's account gets compromised, an attacker can't use it to steal financial records or customer data.

This is where managed cybersecurity comes in. A managed security provider handles the monitoring, handles the patching, manages backups, and responds to incidents. You get 24/7 protection without having to hire a full security team. For most SMBs, this is the realistic way to get defense in depth.

Most Vulnerable Industries

Some industries get targeted more than others because they have something attackers want or they're easier to attack.

• Financial services and accounting are obvious targets. Customer data is valuable. Wire transfer processes are critical. One attack can redirect millions of dollars. Banks and credit unions are well-defended, so attackers often go after the smaller accounting firms and credit unions that serve them.
• Healthcare has high-value data. Medical records sell on the dark web for far more than credit card numbers. Patients' full names, Social Security numbers, insurance information, and medical history mean attackers can commit identity theft or fraud. Healthcare organizations also can't afford to ignore ransomware demands because patients need access to records for ongoing treatment. Attackers know this.
• Government and public agencies have critical data and infrastructure. Attacks disrupt services to residents and taxpayers. Government also has budgets for remediation and insurance, making ransom demands more likely to be paid. Elections systems get targeted because they're high-profile and critical.
• Manufacturing is targeted for different reasons. Production systems (OT, operational technology) are often older and harder to update. Disrupting a production line is devastating, and manufacturers often pay ransom quickly to get back online. Supply chain data is valuable. Intellectual property is worth stealing. A manufacturer making specialized parts has limited options for recovering quickly.

The common thread: attackers go where they can get paid, get away with it, or both.

FAQ

Q: Isn't cybercrime mostly a big-company problem?

A: No. Attackers use automated tools that target thousands of companies at once. Size doesn't matter. What matters is that you have systems and data worth stealing. SMBs are attractive targets because they're less defended than enterprises but still have valuable assets.

Q: How do I know if we've been attacked?

A: Sometimes you know immediately (ransomware locks your files). Often you don't. Performance degradation, unexpected network traffic, missing files, strange emails sent from user accounts, or security alerts all warrant investigation. If you suspect an attack, take it seriously and bring in a professional incident response firm.

Q: Can attackers really get in from just one phishing email?

A: Yes. One email with a trojan attachment, one click leading to malware, one stolen password can open the door. Then they move laterally through your network. That's why phishing is the #1 attack vector for ransomware and data breaches.

Q: Do we really need backups if we have good security?

A: Yes. Security prevents most attacks. Backups ensure you can recover from the ones that get through. Ransomware, insider threats, and hardware failures all require backups. Your backups need to be tested regularly and stored offline so they can't be encrypted along with your live data.

Q: What's the first thing we should do to protect our business?

A: Enable multi-factor authentication on email and any cloud accounts (Microsoft 365, Google Workspace, QuickBooks, etc.). MFA stops 90% of phishing-based intrusions. It's low-cost and high-impact. After that, make sure you have offline backups. Then bring in a managed security provider to handle monitoring and patch management.

Q: Do I need to worry about insider threats?

A: Probably. Insiders have legitimate access, so detecting them is harder. The best protections are access controls (people only access what they need), monitoring (watching for unusual activity), and a strong offboarding process (disabling access immediately when someone leaves).

Need help? Download our cybersecurity tips for employees guide. It walks your team through what to watch for and what to do if something looks wrong. Get your team on the same page about security, and most attacks won't get past them.