Digitised operations are necessary if the aviation industry is to keep up with growing demand, but they open the door to cyber threats that can disrupt business and endanger safety.
Aircraft maintenance management software and other technologies that MRO providers use may be targeted – not necessarily as attackers’ ultimate goal but as a stepping stone to further disruption.
This article explores the current threats affecting the sector (and maintenance operations in particular), and outlines how organisations can protect themselves.
The Cyber Threat Landscape in Aviation
As aviation becomes increasingly networked, it grows more attractive to cybercriminals and state-sponsored attackers. Between 2024 and 2025, cyberattacks targeting the sector increased by 600%, highlighting the urgency of stronger defences.
Why does aviation appeal to attackers? Its allure lies in its complexity and interconnectivity; a single successful intrusion can yield sensitive data, disrupt critical infrastructure, or open pathways into national or global systems.
Maintenance Repair and Overhaul organisations can be particularly appealing targets as attackers may see them as gateways to larger airport networks.
Vulnerabilities
Insider Threats
Human error and malicious intent are weak links in any organisation. According to ICAO, around 60% of aviation cybersecurity incidents involve insider actions.
Expanding Attack Surface
Modern aviation networks combine cloud platforms, operational technology, Internet of Things sensors, mobile devices, and traditional IT infrastructure. This interconnected environment has dramatically widened the attack surface and increased the frequency and complexity of security incidents.
Operational Complexity
Integrating diverse technologies creates intricate interdependencies. Detecting and responding to anomalies in real time thus becomes harder, allowing intrusions to persist unnoticed.
Legacy Systems and Fragmentation
Legacy software solutions and hardware weren’t designed to withstand today’s threats; and because stakeholders upgrade systems at different paces, cybersecurity is sometimes deprioritised in favour of maintaining backwards compatibility.
Third-Party Risks
Attackers frequently exploit smaller vendors or third-party service providers that lack robust protections. Once compromised, malware can propagate into airline or airport systems through trusted connections. Vigilance over the entire supply chain is essential.
Future Risks
When it comes to security, new challenges are always on the horizon. For example, quantum computing threatens to undermine today’s encryption methods. In future, providers will need to use post-quantum cryptography which will use functions that are difficult even for quantum computers to solve.
The adoption of 5G and edge computing technologies is also rising as they promise faster, more efficient data transfer. However, they introduce additional entry points for attackers targeting connected aviation systems.
Common Types of Attacks
Ransomware
There were 27 major ransomware attacks in the aviation sector between January 2024 and April 2025.
Data Breaches
Breaches can expose maintenance records, passenger data, and proprietary engineering information. According to IBM, 95% of breaches are due to human error, including phishing attacks, mishandling sensitive data, and using weak passwords.
Data Manipulation
As cyber criminals get better at covertly accessing systems, they might attempt to alter data. Few verified cases exist today but experts warn this is an emerging threat.
Of course, this would be a disaster in aviation. If malicious actors manipulated maintenance and inspection records, they could hide critical faults or certify unairworthy parts as fit. An aircraft could be cleared for flight based on falsified records, with potentially catastrophic consequences.
Social Engineering
Social engineering attacks are on the rise. For example, the FBI warned earlier this year that a cybercriminal gang known as Scattered Spider had started targeting aviation stakeholders. The group is known for impersonating personnel or contractors to trick IT help desks into giving them access.
The Impact on Safety, Finances, Efficiency and Compliance
Safety Implications
Unlike many other industries, a cyber incident in aviation can directly affect lives; an intolerable risk. Interference with air traffic control systems can render airspace unsafe. Manipulated maintenance records or compromised avionics software could permit unsafe aircraft to operate. Tampering with cargo tracking systems could facilitate smuggling or terrorism.
Financial and Operational Costs
The financial burden of cyber incidents is substantial. In fact, IBM states that the average cost of a data breach is $4.88 million. Flight disruptions alone can cost millions in lost revenue and passenger compensation. Recovery efforts add to the cost through forensic investigations, system rebuilds, regulatory fines, and in some cases, ransom payments.
Efficiency
As stated by ICAO, cyber incidents can hinder efficiency in every aspect of daily operations:
- Airport systems: Attacks on baggage handling or resource management systems can delay flights.
- Flight operations: Disruptions to flight planning and dispatch software can lead to inefficient routing and fuel wastage.
- Passenger processing: Compromised check-in or boarding systems cause queues and bottlenecks, lowering passenger satisfaction.
Reputational Damage
News of a data breach exposing customer data can drive customers to competitors, invite regulatory scrutiny, and affect share prices for publicly traded companies. If an airline’s MRO arm is known to be compromised, other airlines may hesitate to use its services. This type of damage persists far longer than the initial downtime.
Strengthening Cyber Defences in Aviation Maintenance
Cyber risks should be managed with as much rigor as adherence to compliance and safety standards. Here are a few tips.
Interactive Employee Training
Implement engaging training tailored to aviation contexts, focusing on social engineering threats and using scenarios relevant to each role.
It’s important to recognise that standard training programmes may not be effective. A recent study analysing annual cybersecurity awareness training and embedded phishing training at a large healthcare organisation found that neither approach significantly improved overall protection.
For better results, the researchers recommended increasing interactivity instead of relying on static content. The number of times staff completed training didn’t make much difference either. To help them engage and retain the material, focus on quality (i.e., interactivity and engagement) over quantity.
Strong Access Control and Identity Management
Adopt a zero-trust approach, enforcing the principle of least privilege. Implement multi-factor authentication, monitor access logs, and routinely disable inactive accounts. Identity management should extend to contractors and third parties.
Harden Networks, Devices and Aircraft Maintenance Software
All software and devices should be kept up-to-date with patches and protected by strong network security. Conduct thorough due diligence of any vendors to ensure they have the required certifications; the best MRO software will have ISO 27001 certification, for example.
Segment networks so that a breach in the corporate office network can’t easily spread to maintenance technology or aircraft communication links.
Regular vulnerability assessments are crucial. Conduct penetration tests on any networks and systems that interface with aircraft data and ensure third-party vendors do the same with their solutions. These tests can reveal hidden weaknesses like outdated protocols or default passwords on equipment like aircraft routers.
Secure Data & Ensure Integrity
Encryption should be used for sensitive data in transit and at rest – for example, encrypting the communication between aircraft and ground systems transmitting maintenance data.
Back up critical maintenance databases regularly and store backups offline or in immutable storage to protect against ransomware and ensure quick recovery.
Stay Informed
Information sharing is also key and is encouraged by bodies like ICAO. Participate in industry groups like the Aviation ISAC (Information Sharing and Analysis Center) to receive threat intelligence about attacks affecting other aviation companies. Many attacks follow similar patterns, so early warning can make a big difference.
Incident Response and Recovery Preparedness
Develop a detailed incident response plan that covers both technical and operational actions i.e., isolating infected systems, preserving forensic evidence, and maintaining continuity via manual workarounds. Regular live drills help teams practice these responses.
Maintain offline copies of essential documentation (i.e., minimum equipment lists and maintenance manuals) to ensure operations continue if systems are down.
Use Emerging Technologies to Improve Security
Machine learning-based analytics can detect anomalies faster than human monitoring. These tools enhance real-time threat identification and can reduce incident response times significantly.
Conclusion
Cybersecurity has become a core part of running a safe and reliable airline or MRO operation. Organisations should invest in cyber defences with the same seriousness as investing in safety and regulatory compliance.
The threats are real and escalating, and maintenance operations are in attackers’ sights as a potential weak link. Protecting these operations is key preventing malicious actors from causing widespread disruption.
Essential steps include working with vendors that keep their software updated and have obtained appropriate certifications; maintaining robust network security at repair stations and other sites; and staying informed about emerging threats.
If you’d like to learn more about the security built into the OASES solutions and how they protect your operational data, contact us today to request a demo.