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In April, Chelan County, Washington, shut down its entire network, phone lines, and public websites after a malware attack, and officials had no timeline for when normal service would return. That is not a hypothetical scenario from a conference slide. That is six months into 2026, and it is one of 10 stories that tell us exactly where cyber security stands at the midyear mark.
We pulled these from the cyber security headlines, breach trackers, and incident reports that crossed our desks between January and June. Some are massive. Some barely made the local news. All 10 point to the same handful of lessons worth carrying into the second half of the year.
1. The largest education breach on record. In May, the group ShinyHunters said it had stolen 3.65 terabytes of data, roughly 275 million records, from Instructure’s Canvas learning platform, used by nearly 9,000 schools and colleges worldwide. The stolen data included private messages, not just names and email addresses. Takeaway: software everyone trusts and nobody questions can become a single point of failure for millions of people at once.
2. Local governments kept getting hit, and kept losing weeks. St. Paul, Minnesota, declared a state of emergency and shut down its entire network for more than a month after the Interlock ransomware group attacked the city’s systems. Winona County, Minnesota, and New Britain, Connecticut, lost days to similar attacks this year, on top of Chelan County’s outage. Takeaway: a government cannot close its doors and reopen elsewhere. Every county and city, no matter how small, is a target now.
3. The first AI-assisted attack on critical infrastructure. Investigators documented a cyberattack on a municipal water utility near Monterrey, Mexico, that used commercial AI tools to generate the malicious code, the first confirmed case of an AI-assisted attack against water infrastructure. Takeaway: the same AI tools sitting on your laptop are sitting on theirs too, and that gap will only widen.
4. A hospital system lost fingerprints, not just passwords. NYC Health and Hospitals confirmed a breach affecting at least 1.8 million people. Along with medical and financial records, attackers took biometric data, actual fingerprints, and palm prints. Takeaway: you can reset a password. You cannot reset a fingerprint, and the industry has not solved that problem yet.
5. Nike learned that size does not buy safety. Nike confirmed it was investigating a breach after the WorldLeaks group claimed to have taken 1.4 terabytes of internal data, nearly 190,000 files tied to product development and manufacturing. Takeaway: budget and brand recognition are not cyber security. If Nike is a target, so is your organization.
6. Employees watched their own computers get wiped in real time. Medical technology company Stryker suffered an attack in March linked to an Iran-aligned hacktivist group, with employees reportedly watching as company machines were wiped, forcing offices to shut down. Takeaway: some attackers are not after your data at all. Sometimes the goal is simply to shut you down and let you watch it happen.
7. Ransomware had its worst year yet, again. Nearly 4,700 victims had been posted to ransomware leak sites by midyear, a 16 percent increase over the same period last year. One group collected a $75 million ransom, the largest reported so far in 2026. Takeaway: ransomware is not slowing down. It is professionalizing, and the payouts keep climbing because organizations keep paying them.
8. AI made deepfake fraud routine. Experian estimated consumers lost $12.5 billion to fraud last year, with AI-generated scams driving much of the growth. In testing, people could correctly identify high-quality deepfake video only 24.5 percent of the time. Takeaway: “I would know if it wasn’t really them” no longer holds. Verify financial requests through a second channel, every time, no exceptions.
9. A zero-day forced Microsoft’s hand. Microsoft issued an emergency, out-of-band patch for a high-severity flaw that let attackers bypass core security controls in Office and Microsoft 365, too serious to wait for the normal monthly patch cycle. Takeaway: when a vendor breaks its own schedule to patch something, that is the signal to stop and update immediately, not next week.
10. A vendor’s old credentials opened the door. A June supply chain breach was traced back to compromised legacy credentials, which attackers used to breach an integration environment and steal authentication tokens tied to customer platforms. Takeaway: your security is only as strong as the oldest login your vendor forgot to deactivate.
What These 10 Cyber Security Stories Have in Common
Line these 10 stories up side by side. One thing keeps repeating. Almost none of them started with an exotic, unstoppable attack. Most started small. A login nobody turned off. A worker who did not question a video call. A network with no real walls between systems. A vendor relationship nobody had checked in years. The attacker’s tools got sharper: artificial intelligence, deepfakes, scripts written in seconds. But the door they walked through stayed almost the same as it always had.
That is useful news for the second half of 2026. You do not need to out-innovate a nation-state to protect your organization. You need the fundamentals, done consistently. Turn on a second login step (multifactor authentication) on every account that offers it. Know who has access to what. Put a vendor review on the calendar, and actually hold it. Train your people to verify before they trust. None of that is glamorous. All of it works.
The organizations that get hurt the worst in the next six months will not be the ones that lacked good technology. They will be the ones who assumed they were too small to be worth the trouble.
At Commonwealth Sentinel, we stay focused on cyber security so you can focus on other things. Contact us today or sign up for a free consultation.