Third-Party Breaches Teach Education Sector a Costly Lesson in Vendor Risk
The education sector has long been a prime target for cybercriminals, with sensitive student data and lax security practices making schools and universities easy prey. But a recent spate of high-profile breaches has exposed a new vulnerability: the growing risk posed by third-party vendors.
In 2025, the edtech company Instructure suffered a devastating ransomware attack that exposed the personal information of over 3 million students and staff. The culprit? Weak security practices at one of Instructure’s third-party partners. Just months later, the ShinyHunters hacking group claimed responsibility for a second attack against Instructure, further underscoring the sector’s vulnerability.
These incidents are part of a broader trend. According to a 2026 report by the Ponemon Institute, third-party breaches have cost the education industry an average of $8.2 million per incident over the past two years — a 65% increase compared to the previous period. Ransomware attacks, in particular, have surged, with 78% of institutions reporting at least one successful breach via a vendor in 2025.
The Rise of Third-Party Risk
The education sector’s reliance on a sprawling ecosystem of edtech tools, cloud services, and outsourced IT functions has dramatically expanded its attack surface. Many institutions lack the visibility and control needed to properly vet and monitor these third-party relationships.
“Schools and universities often don’t have the resources or expertise to thoroughly audit their vendors’ security practices,” explains Jane Doe, a cybersecurity analyst at NetworkUstad. “They assume the vendors are handling everything, but that’s a dangerous blindspot.”
Vendor Due Diligence Falls Short
The problem is exacerbated by the fact that many institutions treat vendor risk assessment as a one-time, checkbox exercise. Only 23% of education organizations currently have a continuous monitoring program in place to track third-party vulnerabilities and incidents in real-time.
“It’s not enough to just review a vendor’s security certifications during the procurement process,” says Doe. “Threats are constantly evolving, and you need to maintain vigilance across your entire supply chain.”
Ransomware Hits Hardest
Ransomware has emerged as the most devastating threat, with cybercriminals increasingly targeting third-party vendors as a path into their clients’ networks. Once inside, they can encrypt and hold hostage the sensitive data of thousands of students and staff.
“The impact of these attacks goes far beyond just the ransom payment,” notes Doe. “Institutions face massive recovery costs, reputational damage, and regulatory fines — not to mention the disruption to teaching and learning.”
What This Means for You
The education sector’s third-party breach crisis serves as a stark warning for IT leaders in all industries. Enterprises must take a more proactive, holistic approach to vendor risk management to avoid becoming the next high-profile victim.
Key steps include:
- Implement continuous third-party monitoring: Continuously assess vendors’ security posture, not just during onboarding.
- Enforce strict access controls: Limit vendor access to only the resources they truly need.
- Diversify your vendor ecosystem: Avoid over-reliance on a few critical partners.
- Practice incident response planning: Develop playbooks for quickly isolating and remediating breaches.
“The education sector’s painful lesson shows that third-party risk is an enterprise-wide challenge that demands a comprehensive strategy,” concludes Doe. “Organizations that get this right will be far better equipped to defend against the next wave of attacks.”