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Countries

LuxembourgChecked 18 August 2026

Depends on your industryWork: HighEnforcement: Active

In one paragraph: For most businesses, data can leave Luxembourg on the same terms as anywhere else in the European Union: you need the right paperwork, not a local data centre. Finance is the exception, and finance is most of the economy here. Banks and insurers are bound by a secrecy duty that is a crime to break, and a bank that runs its accounts abroad must still keep a daily backup inside Europe.
The catch: The relaxed general answer stops the moment you touch banking, insurance or investment funds. There, three things bite: breaking client secrecy is a criminal offence, not a fine; you may only send client information to a supplier abroad if the client has accepted the outsourcing, the type of information and the country the supplier sits in; and if a bank's accounting system is hosted outside Luxembourg it must still hold a full end-of-day backup on premises inside the European Economic Area. Telecoms firms face a separate 6-month duty to keep call and location records.
Does this apply to me?: Yes. If you sell to people in Luxembourg or watch what they do online, the European privacy rules reach you even with no office here. There is no revenue or headcount threshold to hide under. A company with no base anywhere in Europe must appoint a representative in Europe, though it does not have to be in Luxembourg. The extra Luxembourg-only duties in the national law mostly apply to organisations that are actually set up here.High confidence
Can the data leave the country?: In general, yes, with paperwork. Luxembourg has no national law telling ordinary companies to keep data in the country, and European law actually forbids member states from forcing non-personal data to stay put except on public-security grounds. But this is a banking and fund centre, and the finance rules change the answer. A bank or insurer may only hand client information to a supplier abroad if the client has been told and has accepted which country that supplier is in. And a bank whose accounting system sits outside Luxembourg must still keep a full daily backup somewhere inside the European Economic Area.High confidence
What do I have to do to send it abroad?: The model is a European approved-list. Sending personal data outside Europe is barred unless the destination is on the European Commission's approved list, or you put an approved safeguard in place first. The list is real and populated. Luxembourg adds no national permit and the regulator does not pre-approve ordinary transfers. In finance, though, you also need the client's acceptance of the destination country before their information moves.High confidence
Who enforces this — and are they actually working?: Yes, the regulators here really work. The privacy regulator is the National Commission for Data Protection, known as the CNPD. It is staffed, it publishes decisions, and in 2025 it handled 846 complaints, 425 breach reports and 59 investigations. It issued the largest privacy fine ever recorded in Europe, against Amazon in 2021. The financial regulator and the insurance regulator are heavyweight supervisors in their own right, and since May 2026 the telecoms regulator also runs the national cybersecurity regime.High confidence
How long must I keep it, and when must I delete it?: There is a floor and a ceiling, and they collide often. You must keep anti-money-laundering records for 5 years after the relationship ends, patient files for at least 10 years after care ends, and telephone and internet connection records for 6 months. In the other direction, European privacy law says delete personal data once you no longer need it, and the anti-money-laundering law says delete it when the 5 years are up unless another law makes you keep it longer. That last sentence is how Luxembourg resolves the clash: the longest specific legal duty wins, and after that you must actually erase.High confidence
What happens when something goes wrong?: Count four clocks, because they overlap and they start at different moments. Privacy breach: 72 hours to tell the privacy regulator. Telephone and internet providers: 24 hours to report a personal data breach. Cybersecurity incidents at important companies: an early warning in 24 hours, a fuller report in 72 hours, and a final report a month later. Banks and insurers have their own European reporting on top. The trap is that one incident can start all of them at once, on different teams, with different forms.High confidence
What's the trap?: Five things that are not in any summary. (1) Breaking bank or insurance client secrecy is a crime, not a fine, and it survives the end of the job. (2) Your works council can freeze an employee-monitoring project: staff have 15 days to ask the privacy regulator for an opinion, and that request suspends the project for a month. (3) Research projects carry a fixed list of 12 extra safeguards you must apply or justify skipping. (4) Using genetic data for employment or insurance purposes is banned outright. (5) The privacy regulator cannot fine the State or a commune, so a public body has far less to lose than you do.High confidence
What's about to change?: Two dated changes and several switches already in someone's hand. The dated ones: from 12 January 2027 cloud providers must let customers move away with no exit or transfer fees at all, and Luxembourg's new cybersecurity law, in force since 10 May 2026, is still being filled in with guidance and templates. The switches to watch: the European approval of United States transfers is under formal challenge, and the 6-month duty on telecoms firms to keep call records sits uneasily with European court rulings and could be struck at any time.Medium confidence
Hardest industry wall: Finance — Circulaire CSSF 22/806 relative aux arrangements d'externalisation, telle que modifiee par la circulaire CSSF 25/883

GreeceChecked 18 August 2026

Depends on your industryWork: HighEnforcement: Active

In one paragraph: For most businesses Greece is a normal European country: personal data can leave, as long as you use one of the standard European transfer tools. But Greece has two hard walls that Europe does not. Phone and internet connection records must physically sit on machines inside Greece. Online gambling operators must keep their records on a server inside Greece too. The privacy regulator is fully staffed and fining companies today.
The catch: The relaxed European headline stops being true the moment you touch three things. Telecoms connection records must be stored on physical media inside Greek territory for twelve months. Online gambling records must sit on a server or safe inside Greece for ten years. And Greek public bodies must run their central systems on the Greek state's own clouds, not on a commercial cloud of their choosing. Outside those three, plus the health and public sectors, Greece imposes no storage-location rule of its own.
Does this apply to me?: Yes, it reaches a foreign company with no office in Greece. The European privacy rules apply to anyone anywhere who offers goods or services to people in Greece, or who watches what they do online. The Greek national law adds that it also covers anyone processing data on Greek soil. There is no size or revenue threshold that lets you off. If you have no establishment anywhere in Europe, you must appoint a written representative inside the European Union.High confidence
Can the data leave the country?: In general, yes. Greece adds no storage-location rule of its own to the European baseline, so ordinary business data can be sent abroad once you have the right European transfer paperwork. Three industries break that rule completely. Telecoms companies must keep their connection records on machines physically inside Greece. Online gambling operators must keep their records on a server inside Greece. And Greek government bodies must run their main systems on state-operated clouds. Health, banking and insurance have extra hoops but no location rule.High confidence
What do I have to do to send it abroad?: You need one of the standard European transfer tools before data leaves Europe. The simplest is sending it to a country the European Commission has already approved. If the destination is not approved, you sign the European Commission's standard contract with the recipient, or use approved group-wide internal rules, and you write down why you think the data will still be safe there. Greece adds no extra permission, filing or fee of its own.High confidence
Who enforces this — and are they actually working?: Six bodies, and all six are genuinely working. The Hellenic Data Protection Authority is the main privacy regulator and is issuing numbered decisions and fines every month — its most recent published decisions run to July 2026 and include fines on a bank and an electricity supplier. A separate constitutional authority polices the secrecy of communications. There is also a national cybersecurity authority, a telecoms regulator, the central bank for finance and insurance, and a gambling regulator. This is not a paper regime.High confidence
How long must I keep it, and when must I delete it?: Both directions apply, and they collide. Business books must be kept five years. Medical files must be kept ten years in a private practice and twenty years everywhere else. Online gambling records must be kept ten years. Telecoms connection records must be kept exactly twelve months and then automatically deleted. In the other direction, the European rule says you must not keep personal data longer than you need it. When a specific keeping rule and the general deleting rule clash, the specific keeping rule wins.High confidence
What happens when something goes wrong?: Count three clocks, not one. If personal data is lost or exposed, you have 72 hours to tell the privacy regulator. If you run important infrastructure, you have only 24 hours to send a first warning to the national cybersecurity authority, then 72 hours for a fuller report and one month for the final one. If you are a phone or internet provider, you have 24 hours to report a personal data breach and a separate duty to tell the communications secrecy authority. Missing the 24-hour clocks is the most common failure.High confidence
What's the trap?: Five things that will cost you a weekend. First, a child in Greece can consent to an online service at fifteen, not sixteen — so an age gate built to the European default is set wrong. Second, misusing personal data is a crime here, with prison time, not just a fine. Third, several articles of the Greek privacy law are printed in the statute but the regulator has formally said they must not be applied, because they clash with European law. Fourth, telecoms connection records must physically stay in Greece. Fifth, government bodies cannot simply pick a commercial cloud.High confidence
What's about to change?: Three dated changes. Electronic invoicing between businesses became compulsory for large Greek companies on 2 March 2026 and becomes compulsory for everyone else on 1 October 2026. Greece's new artificial intelligence law took effect on 22 July 2026 and forces public bodies to register every artificial intelligence system before switching it on. And from 12 January 2027 European law bans cloud providers from charging you to move your data out.High confidence
Hardest industry wall: Telecoms — Νόμος 3917/2011 — Διατήρηση δεδομένων που παράγονται ή υποβάλλονται σε επεξεργασία σε συνάρτηση με την παροχή υπηρεσιών ηλεκτρονικών επικοινωνιών
Online gaming — Νόμος 4002/2011 — Ρύθμιση της αγοράς παιγνίων, άρθρο 47, και Κανονισμοί Παιγνίων (ΥΑ 79305/2020 και 79835/2020)
Government — Νόμος 4727/2020 — Ψηφιακή Διακυβέρνηση, άρθρο 87 (Κυβερνητικά νέφη)

The eight framework questions answered for each selected country
Question	LuxembourgChecked 18 August 2026	GreeceChecked 18 August 2026
The three ratings	Depends on your industry Work: High Enforcement: Active	Depends on your industry Work: High Enforcement: Active
In one paragraph	For most businesses, data can leave Luxembourg on the same terms as anywhere else in the European Union: you need the right paperwork, not a local data centre. Finance is the exception, and finance is most of the economy here. Banks and insurers are bound by a secrecy duty that is a crime to break, and a bank that runs its accounts abroad must still keep a daily backup inside Europe.	For most businesses Greece is a normal European country: personal data can leave, as long as you use one of the standard European transfer tools. But Greece has two hard walls that Europe does not. Phone and internet connection records must physically sit on machines inside Greece. Online gambling operators must keep their records on a server inside Greece too. The privacy regulator is fully staffed and fining companies today.
The catch	The relaxed general answer stops the moment you touch banking, insurance or investment funds. There, three things bite: breaking client secrecy is a criminal offence, not a fine; you may only send client information to a supplier abroad if the client has accepted the outsourcing, the type of information and the country the supplier sits in; and if a bank's accounting system is hosted outside Luxembourg it must still hold a full end-of-day backup on premises inside the European Economic Area. Telecoms firms face a separate 6-month duty to keep call and location records.	The relaxed European headline stops being true the moment you touch three things. Telecoms connection records must be stored on physical media inside Greek territory for twelve months. Online gambling records must sit on a server or safe inside Greece for ten years. And Greek public bodies must run their central systems on the Greek state's own clouds, not on a commercial cloud of their choosing. Outside those three, plus the health and public sectors, Greece imposes no storage-location rule of its own.
Does this apply to me?	Yes. If you sell to people in Luxembourg or watch what they do online, the European privacy rules reach you even with no office here. There is no revenue or headcount threshold to hide under. A company with no base anywhere in Europe must appoint a representative in Europe, though it does not have to be in Luxembourg. The extra Luxembourg-only duties in the national law mostly apply to organisations that are actually set up here.High confidence	Yes, it reaches a foreign company with no office in Greece. The European privacy rules apply to anyone anywhere who offers goods or services to people in Greece, or who watches what they do online. The Greek national law adds that it also covers anyone processing data on Greek soil. There is no size or revenue threshold that lets you off. If you have no establishment anywhere in Europe, you must appoint a written representative inside the European Union.High confidence
Can the data leave the country?	In general, yes, with paperwork. Luxembourg has no national law telling ordinary companies to keep data in the country, and European law actually forbids member states from forcing non-personal data to stay put except on public-security grounds. But this is a banking and fund centre, and the finance rules change the answer. A bank or insurer may only hand client information to a supplier abroad if the client has been told and has accepted which country that supplier is in. And a bank whose accounting system sits outside Luxembourg must still keep a full daily backup somewhere inside the European Economic Area.High confidence	In general, yes. Greece adds no storage-location rule of its own to the European baseline, so ordinary business data can be sent abroad once you have the right European transfer paperwork. Three industries break that rule completely. Telecoms companies must keep their connection records on machines physically inside Greece. Online gambling operators must keep their records on a server inside Greece. And Greek government bodies must run their main systems on state-operated clouds. Health, banking and insurance have extra hoops but no location rule.High confidence
What do I have to do to send it abroad?	The model is a European approved-list. Sending personal data outside Europe is barred unless the destination is on the European Commission's approved list, or you put an approved safeguard in place first. The list is real and populated. Luxembourg adds no national permit and the regulator does not pre-approve ordinary transfers. In finance, though, you also need the client's acceptance of the destination country before their information moves.High confidence	You need one of the standard European transfer tools before data leaves Europe. The simplest is sending it to a country the European Commission has already approved. If the destination is not approved, you sign the European Commission's standard contract with the recipient, or use approved group-wide internal rules, and you write down why you think the data will still be safe there. Greece adds no extra permission, filing or fee of its own.High confidence
Who enforces this — and are they actually working?	Yes, the regulators here really work. The privacy regulator is the National Commission for Data Protection, known as the CNPD. It is staffed, it publishes decisions, and in 2025 it handled 846 complaints, 425 breach reports and 59 investigations. It issued the largest privacy fine ever recorded in Europe, against Amazon in 2021. The financial regulator and the insurance regulator are heavyweight supervisors in their own right, and since May 2026 the telecoms regulator also runs the national cybersecurity regime.High confidence	Six bodies, and all six are genuinely working. The Hellenic Data Protection Authority is the main privacy regulator and is issuing numbered decisions and fines every month — its most recent published decisions run to July 2026 and include fines on a bank and an electricity supplier. A separate constitutional authority polices the secrecy of communications. There is also a national cybersecurity authority, a telecoms regulator, the central bank for finance and insurance, and a gambling regulator. This is not a paper regime.High confidence
How long must I keep it, and when must I delete it?	There is a floor and a ceiling, and they collide often. You must keep anti-money-laundering records for 5 years after the relationship ends, patient files for at least 10 years after care ends, and telephone and internet connection records for 6 months. In the other direction, European privacy law says delete personal data once you no longer need it, and the anti-money-laundering law says delete it when the 5 years are up unless another law makes you keep it longer. That last sentence is how Luxembourg resolves the clash: the longest specific legal duty wins, and after that you must actually erase.High confidence	Both directions apply, and they collide. Business books must be kept five years. Medical files must be kept ten years in a private practice and twenty years everywhere else. Online gambling records must be kept ten years. Telecoms connection records must be kept exactly twelve months and then automatically deleted. In the other direction, the European rule says you must not keep personal data longer than you need it. When a specific keeping rule and the general deleting rule clash, the specific keeping rule wins.High confidence
What happens when something goes wrong?	Count four clocks, because they overlap and they start at different moments. Privacy breach: 72 hours to tell the privacy regulator. Telephone and internet providers: 24 hours to report a personal data breach. Cybersecurity incidents at important companies: an early warning in 24 hours, a fuller report in 72 hours, and a final report a month later. Banks and insurers have their own European reporting on top. The trap is that one incident can start all of them at once, on different teams, with different forms.High confidence	Count three clocks, not one. If personal data is lost or exposed, you have 72 hours to tell the privacy regulator. If you run important infrastructure, you have only 24 hours to send a first warning to the national cybersecurity authority, then 72 hours for a fuller report and one month for the final one. If you are a phone or internet provider, you have 24 hours to report a personal data breach and a separate duty to tell the communications secrecy authority. Missing the 24-hour clocks is the most common failure.High confidence
What's the trap?	Five things that are not in any summary. (1) Breaking bank or insurance client secrecy is a crime, not a fine, and it survives the end of the job. (2) Your works council can freeze an employee-monitoring project: staff have 15 days to ask the privacy regulator for an opinion, and that request suspends the project for a month. (3) Research projects carry a fixed list of 12 extra safeguards you must apply or justify skipping. (4) Using genetic data for employment or insurance purposes is banned outright. (5) The privacy regulator cannot fine the State or a commune, so a public body has far less to lose than you do.High confidence	Five things that will cost you a weekend. First, a child in Greece can consent to an online service at fifteen, not sixteen — so an age gate built to the European default is set wrong. Second, misusing personal data is a crime here, with prison time, not just a fine. Third, several articles of the Greek privacy law are printed in the statute but the regulator has formally said they must not be applied, because they clash with European law. Fourth, telecoms connection records must physically stay in Greece. Fifth, government bodies cannot simply pick a commercial cloud.High confidence
What's about to change?	Two dated changes and several switches already in someone's hand. The dated ones: from 12 January 2027 cloud providers must let customers move away with no exit or transfer fees at all, and Luxembourg's new cybersecurity law, in force since 10 May 2026, is still being filled in with guidance and templates. The switches to watch: the European approval of United States transfers is under formal challenge, and the 6-month duty on telecoms firms to keep call records sits uneasily with European court rulings and could be struck at any time.Medium confidence	Three dated changes. Electronic invoicing between businesses became compulsory for large Greek companies on 2 March 2026 and becomes compulsory for everyone else on 1 October 2026. Greece's new artificial intelligence law took effect on 22 July 2026 and forces public bodies to register every artificial intelligence system before switching it on. And from 12 January 2027 European law bans cloud providers from charging you to move your data out.High confidence
Hardest industry wall	Finance — Circulaire CSSF 22/806 relative aux arrangements d'externalisation, telle que modifiee par la circulaire CSSF 25/883	Telecoms — Νόμος 3917/2011 — Διατήρηση δεδομένων που παράγονται ή υποβάλλονται σε επεξεργασία σε συνάρτηση με την παροχή υπηρεσιών ηλεκτρονικών επικοινωνιών Online gaming — Νόμος 4002/2011 — Ρύθμιση της αγοράς παιγνίων, άρθρο 47, και Κανονισμοί Παιγνίων (ΥΑ 79305/2020 και 79835/2020) Government — Νόμος 4727/2020 — Ψηφιακή Διακυβέρνηση, άρθρο 87 (Κυβερνητικά νέφη)