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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
  1. 1Part-IS Requirements, Scope and Deadlines
  2. 2Aviation Information Security, Explained
  3. 3Aviation Cyber Incidents and Their Lessons
  4. 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.

YearOrganisationWhat the document recordsDocument
2015LOT Polish AirlinesAn attack on the computers that issue flight plans at Warsaw Okecie. More than 1,400 passengers were affected, with 10 flights cancelled and 12 delayed. Aircraft already in the air were not affected.BBC News, “Polish LOT aeroplanes grounded by computer hack”, 21 June 2015 — bbc.com/news/world-europe-33219276
2018British AirwaysBetween 22 June and 5 September 2018 an attacker edited a JavaScript file on britishairways.com so that payment-card data entered on the website was copied out. The notice uses the word skimming. The attacker is believed to have potentially accessed the personal data of approximately 429,612 individuals. The penalty is £20m.Information Commissioner’s Office, penalty notice under section 155 of the Data Protection Act 2018, case COM0783542, British Airways, 16 October 2020 — ico.org.uk
2018Cathay PacificUnauthorised access to personal data of approximately 9.4 million passengers. Cathay stated that the earliest evidence of activity suspected as Group One was 15 October 2014, when a keylogger was found on one system. Cathay first detected suspicious activity on its network on 13 March 2018.Privacy Commissioner for Personal Data, Hong Kong, investigation report R19-15281, issued 6 June 2019 — pcpd.org.hk
2019Asco IndustriesA ransomware attack. About 1,000 people were sent home on unpaid leave, in Zaventem. The memo says production was shut down, citing public media. It does not give a duration or a recovery cost.CERT-EU, “Ransomware paralyses European aircraft supplier”, Memo 190617-1, 17 June 2019 — cert.europa.eu
2020VT San Antonio AerospaceThe Maze group gained unauthorized access and deployed a ransomware attack. The company’s investigation, as of the statement, indicated the threat was contained and isolated to a limited number of ST Engineering’s U.S. commercial operations. The business continued to operate. The statement gives no volume of data.ST Engineering, “Cybersecurity Incident at VT San Antonio Aerospace, Inc.”, San Antonio, 5 June 2020 — stengg.com
2021SITAA cyber-attack and a data security incident involving certain passenger data stored on SITA Passenger Service System (US) Inc. servers. That company operates passenger processing systems for airlines. SITA confirmed the seriousness of the incident on 24 February 2021. The statement does not say frequent-flyer data, and it does not give a passenger count.SITA, “SITA statement about security incident”, press release, 4 March 2021 — archived copy
2022SwissportSwissport said it had been hit by a ransomware attack that disrupted some operations. On the Thursday, 22 flights were delayed by up to 20 minutes at Zurich Airport. The article does not report a data theft.Reuters, “Hacker attack hits airport services provider Swissport”, 4 February 2022 — reuters.com
2023BoeingBoeing confirmed that elements of its parts and distribution business had experienced a cybersecurity incident, and that a criminal ransomware actor had released information it alleged to have taken. Reuters did not verify the files and stated no volume.Reuters, “Boeing data published by Lockbit hacking gang”, 10 November 2023 — reuters.com

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.
IS.I.OR.230 (full rule text)Information security external reporting scheme

(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):

IS.I.OR.205 (full rule text)Information security risk assessment

(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.