deny authentication
[dɪˈnaɪ ɔːˌθɛntɪˈkeɪʃən]
verb phrase
negar autenticação
1. To refuse or reject the verification of someone's identity or the validity of credentials in a system or process
The server will deny authentication if the password is incorrect.
O servidor negará a autenticação se a senha estiver incorreta.
2. In cybersecurity and access control, to prevent someone from accessing a system by rejecting their login credentials
The firewall is configured to deny authentication requests from unauthorized IP addresses.
O firewall está configurado para negar autenticação de solicitações de endereços IP não autorizados.
3. To disallow or block confirmation of identity through authentication mechanisms
Two-factor authentication will deny authentication without a valid verification code.
A autenticação de dois fatores negará a autenticação sem um código de verificação válido.
This is primarily a technical term used in IT, cybersecurity, and digital systems contexts. It is equally understood in both Brazil and Portugal within professional and technical environments. The phrase is commonly found in system error messages, security protocols, and official documentation rather than in casual conversation.
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