Three Ways Attackers Are Getting Into Mid-Market Companies

October marks the 23rd annual Cybersecurity Awareness Month, and this year the National Cybersecurity Alliance chose a theme that fits the moment: “Don’t Make It Easy for Them.” Attackers look for the easiest way in. Every small habit that closes off an easy path makes your organization a harder target, and harder targets tend to get passed over. 

Most of the advice that circulates this month is written either for individual consumers or for large enterprises with full security departments. Mid-market companies sit in between, and that middle ground is where attackers have been spending a lot of their time. 

Attackers Are Counting on the Middle 

Mid-market organizations have the revenue, data, and customer relationships that make an attack worth the effort. Many also run security with a small IT team that is stretched across everything else that keeps the business running. Attackers know that combination well. 

The data backs this up. Ransomware appears in 48% of all breaches in Verizon’s 2026 Data Breach Investigations Report. Among ransomware victims whose size was known, roughly 96% were organizations with fewer than 1,000 employees. 

Three Ways Attackers Are Getting In 

The 2026 data points to three openings that mid-market leaders should watch closely. 

• Systems that haven’t been patched. Exploiting software vulnerabilities is now the most common way attackers break in, accounting for 31% of breaches, a 55% jump from last year. Meanwhile, the median time for organizations to fully resolve a critical vulnerability grew to 43 days, almost two weeks longer than the year before. Attackers are also using AI to move faster. In the median case, Verizon found generative AI supporting 15 distinct attack techniques. Every week a known flaw stays open gives someone another week to use it. 

• Vendors and partners. Breaches involving a third party rose 60% and now make up 48% of all breaches. Your software providers, managed service partners, and suppliers all have some level of access to your environment, and their security gaps can quickly become yours. 

• The phone in your pocket. Employees have gotten better at spotting suspicious emails, so attackers have followed them to text messages and phone calls. In phishing simulations, attacks delivered by voice or text had a 40% higher median click rate than those delivered by email. A call that sounds like your CFO, or a text that appears to come from IT, can fool people who would never click a bad link in their inbox. 

What “Don’t Make It Easy for Them” Looks Like in Practice 

You can make real progress with the team and budget you have today. These five steps cover the openings above. 

• Set a patch deadline and track it. Decide how quickly critical vulnerabilities must be fixed, then measure your team against that number every month. 

• Turn on multi-factor authentication everywhere you can. Start with email, remote access, and any account a vendor uses to reach your systems. 

• Review vendor access. Know which partners can reach your systems, limit each one to what they actually need, and ask how they protect their own environment. 

• Train for calls and texts, too. Give employees a simple verification step for any request involving money, passwords, or sensitive data, such as hanging up and calling back on a number they already know. 

• Test your backups and your response plan. Confirm you can restore critical systems, and walk your leadership team through what happens in the first 24 hours of an incident. 

Why It’s Worth Doing Now 

Most breaches are survivable, but the worst ones can do serious damage. In Verizon’s study of cyber insurance claims, losses in the most severe 2.5% of cases topped 7% of a small or mid-sized company’s annual revenue. For a business doing $50 million a year, that would mean more than $3.5 million. 

Cybersecurity Awareness Month is a good checkpoint. Use it to ask your team a few direct questions. How long do our critical patches take? Which vendors can reach our systems? Would our people recognize a fake call from leadership? Wherever the answer is unclear, start there. 

Talk With Guard Street 

Guard Street helps mid-market leaders understand where they stand and what to fix first, explained in plain terms. If you want a clear read on your organization’s risk, reach out at www.guardstreet.com/connect.