How the Heathrow cyber-attack exposed third-party vulnerabilities, and what your business can learn from it

Introduction

Last week’s cyber-incident involving Collins Aerospace’s Muse software has sent shockwaves through the aviation industry, and rightly so. For many travellers at Heathrow, Brussels, Berlin and beyond, check-in kiosks were offline, baggage drop systems didn’t operate normally, and flights were delayed or cancelled. As digital dependency grows, the event brings into sharp focus how fragile our infrastructure really is when a key vendor is compromised.

What Happened

  • On Friday night (19 September 2025), Collins Aerospace experienced a “cyber-related disruption” affecting its Muse check-in and boarding systems.

  • The attack impacted multiple major European airports, Heathrow, Brussels, Berlin with various airlines forced to use manual check-in and boarding.

  • Over the following days, delays and cancellations persisted. Some terminals and airlines were less affected than others.

Key Impacts

  • Passenger Disruption: Long queues, confusion about flight status, cancellations, delays.

  • Operational Strain: Manual check-in, extra staff needed, slower throughput at terminals.

  • Supply Chain Weakness: Although Heathrow doesn’t own Muse, its operations were severely impacted because so many depend on it. It underscores that your resilience is only as strong as your weakest link.

What Isn’t Yet Clear

  • Who is responsible? (No confirmed attribution so far.)

  • Whether data was exfiltrated or compromised beyond just operational disruption. (No confirmed breach of personal data yet.)

  • The full cost—financial, reputational, customer-trust.

Lessons & What Businesses Should Do

  • 1

    Third-Party Risk Management
    Map all suppliers’ technology and processes. Understand which vendors are mission-critical.

  • 2

    Resilience and Fallback Plans
    Have manual backup options, tested contingency procedures, redundancy in tools or suppliers.

  • 3

    Regular Security Audits and Monitoring
    Not only of internal systems but also of vendor technologies, supply chain dependencies, software patching, etc.

  • 4

    Incident Response & Communication
    In an outage, the speed and clarity of communication (to customers, stakeholders, regulators) can greatly influence how disruptive things become.

  • 5

    Collaboration with Authorities and Shared Intelligence
    Cybersecurity agencies, regulators (e.g. in UK & EU), industry groups, sharing what has happened helps others prevent or better respond.

How Netserve Helps

At Netserve, our approach includes:

  • Vendor security assessments as part of client onboarding

  • Designing infrastructure with redundancy and fallback paths

  • Managed DR/BC (disaster recovery / business continuity) services

  • Ongoing monitoring, threat intelligence, and working with regulatory requirements

If you’re assessing your exposure, or want to ensure your systems would survive something like the Muse outage, we can help.

Conclusion

Technology makes operations more efficient but also introduces systemic risk. The recent Heathrow incident is a wake-up call for every organisation that depends on third-party platforms. Building resilience isn’t optional; it’s essential.

The question isn’t if something like this will happen again but when.