Blacon High School

Summary

A ransomware attack forced Blacon High School to close temporarily, disrupting operations and prompting an independent cybersecurity investigation to assess potential data breaches. The incident required staff devices to be cleansed, necessitating lesson re-planning and remote student work via Google Classroom, while senior staff developed contingency systems. Temporary measures included lunch collection services and alternative communication channels due to inoperable phone systems, with updates provided through Parent Pay, social media, and the school website.

Motives

Detailed motive labels are available to members.

TTPs

Detailed technique labels are available to members.

Description

Blacon High School experienced a ransomware attack on Friday, 17 January 2025, prompting an immediate two-day closure on Monday 20 and Tuesday 21 January. Headteacher Rachel Hudson announced the closure via a public letter on the school website, citing the need to contain the incident while an independent cybersecurity firm investigated the breach. The attack disabled critical infrastructure including phone systems, forcing the school to establish a temporary contact number (0330 043 9883) for operational communications. No details about the attack vector, compromised systems, or potential data exfiltration were disclosed pending the cybersecurity investigation. School staff initiated device cleansing procedures while senior leadership developed contingency plans to maintain operations. Instructional continuity efforts involved teachers re-planning lessons and assigning work through Google Classroom for remote completion, with particular emphasis on Year 11 students preparing for exams. The school offered limited on-site services during closure days, providing lunch distribution at reception between 11:00 AM and 1:00 PM for students requiring meals.

The incident caused significant operational disruption, with Hudson warning parents that extended closures beyond 21 January remained possible pending investigation results. Communication channels shifted exclusively to ParentPay, social media, and the school website due to disabled internal systems. School leadership framed the attack as part of a broader trend affecting UK public sector entities including the NHS and National Rail, though no threat actor attribution or ransom demands were disclosed. Response priorities focused on forensic analysis before determining breach scope or data exposure risks. No timeline existed for full restoration of services, with reopening contingent upon cybersecurity verification of system safety. The attack disrupted educational routines during winter term, particularly impacting GCSE preparation for Year 11 cohorts through forced remote learning arrangements.

Sources

Sources available to members: 1 source.