Identity-based techniques were used in 85 per cent of ransomware attacks against education institutions over the past year, according to fresh research from cybersecurity firm Sophos — a finding that underlines how stolen credentials and phishing are now the primary route into schools and universities.
Attack methods and financial impact
The Sophos report, titled The State of Ransomware in Education 2026, identifies malicious email, compromised credentials and brute-force attempts as central to the vast majority of incidents. The study also places a spotlight on the growing financial toll: the average recovery cost for affected education organisations reached US$2.26 million.
Malicious email emerged as the leading technical root cause of incidents, accounting for 31 per cent of attacks in lower education and 29 per cent in higher education. Respondents in both sectors reported that identity compromise was often the most consequential element of the ransomware event.
“Identity compromise has become one of the most effective paths into an organisation, and AI is only increasing the speed, scale and sophistication of these attacks,” said Ross McKerchar, Chief Information Security Officer at Sophos.
Where detection and response fall short
The report highlights a disparity in the ability to detect and halt attacks. More than half — 53 per cent — of respondents from higher education said a lack of skills or expertise prevented them from detecting and stopping incidents in time. That compares with 35 per cent across all sectors covered in Sophos’ broader research.
Lower education institutions reported a mix of human and technical factors that contributed to successful attacks: 52 per cent cited human error, 47 per cent pointed to insufficient protection, 42 per cent identified unknown security gaps, and 41 per cent said limited capacity was a factor.
Encryption and shifting defences
One notable change in lower education was a jump in data encryption rates, which rose from 29 per cent in 2025 to 61 per cent in 2026. While this suggests some institutions are investing in stronger data protection, the report suggests encryption alone is not enough without improvements in identity security and rapid detection capabilities.
| Measure | Reported figure |
|---|---|
| Incidents involving identity-based techniques | 85% |
| Average recovery cost | US$2.26 million |
| Malicious email — lower education | 31% |
| Malicious email — higher education | 29% |
Implications for students, staff and administrators
The findings carry direct consequences for everyday life on campuses and in classrooms. Education institutions hold large volumes of personal data on students, staff and families, and disruptions from ransomware can delay instruction, block access to learning platforms and expose sensitive information.
Because identity-based access is so central to these attacks, the report argues institutions need to treat identity as a primary security control. That means strengthening multi-factor authentication, improving credential hygiene, investing in staff training and building integrated detection and response capabilities that can identify suspicious activity before attackers reach critical systems.
- Identity-based techniques were present in 85% of education ransomware attacks.
- Average recovery costs rose to US$2.26 million.
- Skills gaps and limited capacity impede timely detection, especially in higher education.
For Canadian school boards, post-secondary institutions and provincial authorities, the report is a reminder that cyber risk management must prioritise the human and identity layers as much as firewalls and encryption. With attackers increasingly using social engineering bolstered by automated tools and AI, resilience will depend on a mix of technical defences, staff training and adequate resourcing for incident response.
Policymakers and education leaders will need to consider whether current budgets, procurement rules and workforce plans allow institutions to implement those measures quickly enough to protect students and staff from escalating threats.
