Aviation Cyber Incidents and Their Lessons
Eight aviation cyber incidents, each tied to a public report a reader can open, plus three fictional Monday-morning scenarios.
Dionysis Kefalas8 min readFor Part-145, CAMO and Air Ops staff
Part 3 of 4 in Part-IS Implementation Show parts
- 1Part-IS Requirements, Scope and Deadlines
- 2Aviation Information Security, Explained
- 3Aviation Cyber Incidents and Their Lessons
- 4Part-IS Shop-Floor Practice and Reporting
Quotes checked on against EASA Easy Access Rules for Information Security (Regulations (EU) 2022/1645 and (EU) 2023/203) — 5 Dec 2025 revision.
On this page
Eight incidents, eight documents
Each row below is one incident a reader can open. The figure in the row is a figure in that document. Nothing in the table is a guess at a fine, a headcount, or a volume of data.
Two worth a closer look
LOT, 21 June 2015 — the ground system
The BBC report is about computers that issue flight plans at Warsaw Okecie, not about an aircraft in flight. More than 1,400 passengers were affected. Ten flights were cancelled and twelve were delayed. LOT told the BBC the attack did not affect aeroplanes already in the air.
Asco, June 2019 — the factory
CERT-EU’s memo of 17 June 2019 records a ransomware attack on Asco Industries, an aerostructures supplier. About 1,000 people were sent home on unpaid leave. The memo, relying on public media, says production was shut down. It does not say for how long, and it does not say what recovery cost.
Could this be you? Three Monday-morning scenarios
Run these against your own organisation. All three are fictional — the organisations do not exist, and any resemblance to a real one is coincidental. They borrow the shapes in the documents above: a ground system that stops a departure, ransomware on a maintenance network, a credential used from outside the organisation. They are not retellings of those incidents.
ExampleMRO — a Part-145 workshop
- Monday. A technician receives an email, apparently from a component OEM, with an "urgent revised inspection procedure" attachment. It is a fake — the attachment installs malware on an office laptop.
- Tuesday. The malware spreads to the PCs driving the bench test equipment, because office and workshop share one network. It quietly uploads the stored test records and credentials.
- Friday night. Ransomware detonates. Test records, calibration data and the work-order system are encrypted. The backup drive — permanently connected — is encrypted too.
- Monday. No test records means no evidence behind recent releases. Whether that is an information-security incident or vulnerability with a significant risk to aviation safety is a judgement for the organisation. If it is, the clocks are the ones in IS.I.OR.230, quoted below.
ExampleCAMO — a continuing-airworthiness organisation
- Monday. A continuing-airworthiness engineer enters credentials on a convincing fake login page for the records portal. Nothing visible happens; the working day continues normally.
- The following weeks. The attacker logs in with the phished credentials and exfiltrates quietly — fleet records, AD-compliance status, review working files — while watching how the organisation works.
- One night. Having taken what there is to take, the attacker encrypts the AD-compliance records and the airworthiness-review files.
- The next morning. Fleet records are unavailable. The same question as in the workshop applies: if the condition in IS.I.OR.230 is met, the notification and the report in the quote are the ones that apply.
ExampleAir — an operations department
- Weeks earlier. A dispatcher installs a cracked tool on a personal laptop at home. The infostealer bundled with it harvests every saved password in the browser — including the work ones.
- Monday. Those credentials are sold and used: flight-planning and crew-records access is compromised. There is no alarm, because the logins look legitimate.
- Tuesday. The intrusion is discovered. The integrity of the weight-and-balance and fuel figures produced since the compromise can no longer be assumed.
- The rest of the week. Operations stop until the systems are verified. If the condition in the quote is met, the report does not wait for the clean-up to finish.
(b)Without prejudice to the obligations of Regulation (EU) 376/2014, the organisation shall ensure that any information security incident or vulnerability, which may represent a significant risk to aviation safety, is reported to their competent authority. Furthermore:
[…]
(c)The organisation shall report the conditions referred to in point (b) as follows:
(1)a notification shall be submitted to the competent authority and, if applicable, to the design approval holder or to the organisation responsible for the design of the system or constituent, as soon as the condition has been known to the organisation;
(2)a report shall be submitted to the competent authority and, if applicable, to the design approval holder or to the organisation responsible for the design of the system or constituent, as soon as possible, but not exceeding 72 hours from the time the condition has been known to the organisation, unless exceptional circumstances prevent this.
The report shall be made in the form defined by the competent authority and shall contain all relevant information about the condition known to the organisation;
Quoted word for word from Implementing Regulation (EU) 2023/203, Easy Access Rules for Information Security, 5 Dec 2025 revision.
The 72 hours are in point (c)(2). They run from the time the condition has been known, for an incident or vulnerability which may represent a significant risk to aviation safety, and exceptional circumstances are the stated exception. The quote does not start a clock for every outage.
What the pattern teaches
The eight documents are not one attack. LOT is a ground planning system. British Airways is a change to the website that copied payment-card data. Cathay Pacific’s report records Group One activity from 15 October 2014 and detection of suspicious activity on 13 March 2018. Asco, VT San Antonio Aerospace and Swissport are ransomware reports, and none of those three states a volume of stolen data. SITA’s statement is about passenger data on a supplier’s servers. Boeing’s statement, as Reuters printed it, is that a criminal ransomware actor released information it alleged to have taken from the parts and distribution business.
Two rule points sit next to that list. The point titled information security incidents — detection, response and recovery is IS.I.OR.220. Interfaces are IS.I.OR.205(b):
(b)The organisation shall identify the interfaces that it has with other organisations, and which could result in the mutual exposure to information security risks.
Quoted word for word from Implementing Regulation (EU) 2023/203, Easy Access Rules for Information Security, 5 Dec 2025 revision.
SITA’s statement is the illustration: passenger data processed for airlines was stored on the supplier’s servers. The quote requires the organisation to identify that kind of interface. It does not, by itself, say the interface is an unacceptable risk.
The next guide in this series turns to shop-floor, office and contract habits. It is not a claim that any of the eight documents priced the recovery.
Educational content, not regulatory compliance advice. Verify against the current regulation text before relying on it.
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Written by Dionysis Kefalas. Retired Hellenic Air Force Captain and founder of Avioverse. About the author
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