Firewall
Network security system monitoring incoming/outgoing traffic.
Why it matters
Firewall matters because it affects financial interpretation, product decisions, and industry communication.
How it works
Firewall is commonly explained through its core definition and the practical example used in the glossary.
Risks and pitfalls
A common mistake is to use Firewall without understanding its operational and regulatory context.
Regional notes
Firewall may vary across payment rails, regulations, and market practices.
Related terms
AI
Simulation of human intelligence by machines.
Big Data
Large, complex datasets.
Biometric Authentication
Verification using unique biological characteristics.
Cold Wallet
Offline storage for cryptocurrency.
Consensus Algorithm
Mechanism to agree on data.
Consensus Mechanism
Method used to achieve agreement on the blockchain.
Primary sources
EMVCo
2026-03-15EMVCo: EMV 3-D Secure
Primary source for 3DS protocol terminology.
European Banking Authority
2026-03-15European Banking Authority: Strong Customer Authentication
Primary source for SCA and PSD2 compliance context.
Coinbase
2026-03-15Coinbase Learn: Crypto glossary
Reference source for crypto infrastructure terminology.
Reviewed
3/15/2026