Can I use my neighbour's wi-fi in Czechia?
Not without the owner's consent — a missing password is not an invitation. Criminal Code § 230 punishes unauthorised access to a computer system: joining someone's network that wasn't made available to you is formally criminal even when it's unsecured. A one-off signal "borrow" ends in practice as a misdemeanour or civil dispute, but with damage (drained data, illegal downloads from the owner's IP) it turns serious — note that whatever gets downloaded lands first on the network's owner. Fine are public hotspots (cafés, cities — meant for the public) and the neighbour's network with their consent. Cracking passwords (WPS attacks etc.) is unambiguously criminal.
📋 The rules
- Someone's network without consent: unauthorised access (§ 230)
- Unsecured ≠ consented — an open home network stays foreign
- Public hotspots: meant for the public — fine
- The neighbour's wi-fi with consent: legal (even for a contribution)
- Breaking security: always criminal
🔓 Exceptions
- Networks explicitly labelled free/guest wi-fi
- In-house sharing by agreement (flatmates, family)
⚠️ Penalties & fines
Unauthorised access: up to 2 years (base offence), more with damage or data misuse. Practically: minor cases end in warnings/misdemeanours, but anything illegal from the connection hits the network owner first — and they defend themselves.
📎 Official sources
- Živě · Wi-fi and the law — advice (CS) →
- Diit · May you join an unsecured wi-fi? (CS) →
- ePravo · Public wi-fi networks and the law (CS) →
❓ Frequently asked
No password — isn't that a public offer?
No — an unsecured home network remains someone's system; public offers are only hotspots meant for it (cafés, city wi-fi).
What realistically happens for borrowing the neighbour's signal?
Formally § 230; practically a warning or misdemeanour — plus the risk that anything illegal lands on the neighbour first, then investigators trace to you.
May I share my wi-fi with the neighbour?
Yes, by agreement (ISPs sometimes restrict it in terms); with an open network you carry the risk of others' traffic.
May I boost public hotspot signal with an extender?
For public networks within the operator's terms yes; for private networks no.
🔎 Common searches
What people search to land here:
- “using neighbours wifi czech republic”
- “unsecured wifi legal czechia”
- “wifi theft czech law”
- “unauthorised access 230 czech”
- “share wifi neighbour czech”