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Click with Caution

Click with Caution helps people who use phones, banking services, apps, and social networks recognize scams, protect their accounts, and solve digital problems with simple guidance and reliable sources.

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Pessoa segura um celular com a lista de dispositivos da Conta Google aberta, diante de um notebook que mostra a mesma área de segurança.
Passwords and Accounts24/09/20267 min read

Unknown device on your Google Account: how to review sessions and end access

Learn how to review Google Account devices and sessions, interpret times and locations, sign out unknown access, and strengthen security without confusing sign-out with wiping a de...

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Mulher observa alerta de link suspeito no notebook, cercada por símbolos de download, permissões, envio, lupa e proteção digital.
After an Incident22/09/20265 min read

Clicked a suspicious link but entered nothing? How to assess the risk

Learn to distinguish opening a page from a download, permission grant, or data submission, and what to check safely.

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Pessoa segurando celular com mensagem de código de verificação do WhatsApp, enquanto uma silhueta encapuzada e um alerta vermelho aparecem ao fundo.
Passwords and Accounts14/09/20266 min read

I got a WhatsApp verification code I didn’t request: what it means and what to do now

An unsolicited code means someone tried to register your number on WhatsApp. Learn what to do, how to secure the account, and how to recover access.

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Pessoa confere o destinatário de um Pix no celular diante de um checkout de e-commerce com QR Code e alertas de possível fraude.
Scams and Fraud13/09/20266 min read

Pix checkout scam: how to spot a swapped QR code and what to do after paying

A legitimate checkout can be compromised and replace the Pix QR code or copy-and-paste code. Learn what to verify before paying and how to act quickly with your bank, MED, the stor...

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Smartphone Android sobre uma mesa, com ícones de duas chaves e uma seta de transferência entre dois gerenciadores de credenciais.
Passwords and Accounts13/09/20267 min read

Android can transfer passkeys between password managers: how to migrate without exporting passwords

Android can now move passwords and passkeys directly between compatible password managers. Learn the secure flow, compatibility limits, and what to verify before leaving the old ap...

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Mãos segurando celular com conversa de suposto advogado, balança da Justiça ao fundo e alerta visual de fraude ao lado.
Scams and Fraud12/09/20267 min read

Fake lawyer scam on WhatsApp: how to use ConfirmADV before sending a Pix

Learn how to check registration and identity, verify a payment request through another channel, spot warning signs, preserve evidence and act if you already sent a Pix.

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Notebook exibindo Chrome 153 atualizado, com alerta da CVE-2026-87464, cubo WebGL e escudo de segurança em uma cena tecnológica azul.
Apps and Devices10/09/20264 min read

CVE-2026-87464 in Chrome 153: fixed versions and how to verify the WebGL update

See which Chrome 153 builds fix CVE-2026-87464, how to check your installed version, and why “critical” does not by itself mean active exploitation.

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Smartphone Android aberto nas configurações de segurança com a data 2026-09-05, ao lado de um escudo verde e símbolos de falhas bloqueadas.
Apps and Devices10/09/20265 min read

September Android patch: how to check for 2026-09-05 and what it fixes

See where to check the Android security patch, how to interpret 2026-09-01 versus 2026-09-05, and why rollout dates differ by device.

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Notebook em uma mesa exibindo o símbolo do Chrome, um ícone de atualização e um alerta visual de segurança ao fundo.
Apps and Devices09/09/20265 min read

CVE-2026-85046 in Chrome: fixed versions and how to verify the update

The V8 flaw was already known to be exploited. See which Chrome builds received the fix, how to check your installed version, and why relaunching the browser matters.

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Pessoa segura um celular com a tela de dispositivos conectados do WhatsApp e toca em desconectar, com notebook e cadeado ao fundo.
Passwords and Accounts08/09/20265 min read

Unknown device on WhatsApp: how to review sessions and tell if your account was compromised

Learn how to review linked devices, log out unfamiliar sessions, and tell when an old device may actually signal unauthorized access to your account.

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Mãos segurando um smartphone com a tela de verificação em duas etapas do gov.br e um código numérico, com notebook aberto ao fundo.
Passwords and Accounts05/09/20267 min read

gov.br two-step verification: where the code appears, why it is not sent by SMS, and how to recover access

The gov.br 2FA code is generated in the official app, not sent by SMS. Learn how to enable it, sign in, authorize devices, and recover access after changing phones.

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Smartphone com tela do WhatsApp Business ao lado de calendário marcado em 23/9, escudo, cadeado e quadro visual sobre o que muda e o que permanece igual.
Privacy and Data03/09/20265 min read

New WhatsApp Business terms on September 23: what changes — and what does not — for privacy and encryption

The September 23 update separates the WhatsApp Business App terms from the Business Platform terms, without changing the app's operation, end-to-end encryption or WhatsApp's data r...

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Scams and Fraud

Signals, checks and actions regarding suspicious messages, calls, charges and pages.

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Mãos seguram um celular na prévia de pagamento Pix ao lado de um boleto com QR Code, com uma placa amarela de pagamento por Pix ao fundo.
Scams and Fraud02/09/20267 min read

QR code on a boleto, sign or poster: how to check where it leads before paying without opening a suspicious link

Learn how to verify the recipient, amount and context of a QR code before paying with Pix, without relying on suspicious links, and what to do if the code was altered.

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Smartphone exibindo chamada de empresa genérica com selo de verificação, enquanto uma silhueta suspeita e um alerta aparecem ao fundo.
Scams and Fraud01/09/20267 min read

Is a call with a name or brand on screen safe? What authentication really proves

An authenticated-call badge can confirm the origin and show a name or logo, but it does not certify the conversation itself. Learn the limits, device compatibility, and scam warnin...

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Mãos seguram celular com tela ilustrativa de boletos no DDA ao lado de boleto bancário, símbolo de alerta e bilhete indicando cobrança não reconhecida.
Scams and Fraud25/08/20269 min read

Unknown bill in DDA: is it a scam? What the registration proves before you pay

An unexpected bill in DDA is neither an automatic debit nor, by itself, proof that the debt is legitimate. See what to verify before authorizing payment.

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Mulher observa com desconfiança um celular exibindo ligação de uma central bancária genérica, com indicação de número validado e aviso para confirmar antes de informar dados.
Scams and Fraud19/08/20269 min read

The bank number appeared on the screen: how do you know if the call is real or a fake call center?

The number displayed on the cell phone may be spoofed. See how to interpret “Validated Number”, what banks can ask for and how to confirm the connection through an independent chan...

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Passwords and Accounts

Passwords, access keys, authentication and recovery of digital accounts.

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Celular com símbolo do WhatsApp ao lado de escudo, cadeado, campo de senha, indicação de PIN e ícone de impressão digital.
Passwords and Accounts02/09/20267 min read

WhatsApp upgrades two-step verification from PIN to password: how passkeys differ

Meta strengthened WhatsApp two-step verification with alphanumeric passwords. Learn how the old PIN, the new password, and passkeys differ and how to update security without weaken...

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Ilustração de recuperação de autenticação com celular quebrado, códigos temporários, backup em nuvem, código de recuperação e caminhos para restaurar acessos.
Passwords and Accounts22/08/20269 min read

I lost my cell phone with Authenticator: when do the codes come back and when do I need to recover each account

Losing your cell phone doesn't always mean losing your codes. See when Google and Microsoft Authenticator restore data and when you need to recover each account.

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Ilustração editorial de um computador com uma chave digital protegida e um alerta de malware, sem logos ou texto.
Passwords and Accounts09/08/20266 min read

Passkeys have been cracked? What Unit 42's Google Research Really Showed

Research from Unit 42 showed three attacks against synchronized Google passkeys on PCs already compromised by malware, not a breach of passkey encryption.

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Smartphone genérico ao lado de um símbolo de chave digital, representando o uso de passkey para acessar uma conta com segurança.
Passwords and Accounts09/08/20268 min read

Access key (passkey): is it worth activating and what happens if you lose your cell phone

Passkeys reduce the risk of phishing and can replace passwords, but recovery depends on where the key is saved and the account's backup methods.

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Privacy and Data

Data collection, rights, privacy settings and conscious sharing.

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Notebook e celular em uma mesa ao lado de cadeado e cartão ilustrativo de CPF, com referências ao BC Protege+, Registrato e Cadastro Pré-Pago.
Privacy and Data15/08/202610 min read

CPF leaked: what can be blocked and what can only be monitored with BC Protege+, Registration and Prepaid Registration

After a CPF leak, some measures prevent specific uses and others only reveal signs of fraud. Understand the role of each official service.

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Smartphone com tela do WhatsApp Business ao lado de calendário marcado em 23/9, escudo, cadeado e quadro visual sobre o que muda e o que permanece igual.
Privacy and Data03/09/20265 min read

New WhatsApp Business terms on September 23: what changes — and what does not — for privacy and encryption

The September 23 update separates the WhatsApp Business App terms from the Business Platform terms, without changing the app's operation, end-to-end encryption or WhatsApp's data r...

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Fluxograma mostra quais dados um aplicativo pode solicitar para aferir a idade e quais riscos de privacidade devem ser observados.
Privacy and Data05/08/20268 min read

ECA Digital foresees a new adaptation phase: what could change in the age verification of apps

The ANPD schedule foresees expanding the monitoring of age measurement in August. Understand what is already the law, what is being adapted and what data to observe.

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Apps and Devices

Permissions, installations, updates and care for cell phones, computers and applications.

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Mão segura smartphone com aviso de chamada bloqueada; ao lado, ícones explicam bloqueio automático, proteção de serviços essenciais e prazo de 10 dias para desbloqueio.
Apps and Devices03/09/20267 min read

Automatic blocking of abusive calls: how Anatel’s rule works and how to request unblocking

The new rule guides carriers’ antispam filters, provides default activation with opt-out, and gives 10 calendar days for a response or unblocking of affected originating numbers.

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Smartphone exibindo confirmação de pagamento Pix ao lado de calendário com 06/09, menções a CERTPIC e CERTPIA e escudo com cadeado.
Apps and Devices01/09/20265 min read

Pix and the September 6 deadline: users do not replace certificates; institutions must comply

The September 6, 2026 deadline requires Pix participants to adjust digital certificates used in the infrastructure. Ordinary users do not need to replace a certificate or take extr...

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Mão segurando celular Android com anúncio em destaque, ao lado de texto sobre identificar, diagnosticar e remover propaganda que aparece sozinha.
Apps and Devices17/08/202610 min read

Advertising appearing alone on Android: how to find out where it comes from and remove it without formatting the first time

Out-of-context ads can come from the browser, website notifications or an installed app. See how to separate the symptoms and safely eliminate the source.

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Notebook exibindo Chrome 153 atualizado, com alerta da CVE-2026-87464, cubo WebGL e escudo de segurança em uma cena tecnológica azul.
Apps and Devices10/09/20264 min read

CVE-2026-87464 in Chrome 153: fixed versions and how to verify the WebGL update

See which Chrome 153 builds fix CVE-2026-87464, how to check your installed version, and why “critical” does not by itself mean active exploitation.

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Digital security explained without fearmongering

Click with Caution helps ordinary people make safer decisions when using phones, accounts, apps, banking services, and social networks. Our content turns technical guidance into understandable steps, points readers to official sources and channels, and makes clear when information may change. The blog does not blame victims, promote panic, or promise absolute protection or recovery of lost funds. Content involving finance, law, privacy, or incident response is reviewed by a person before publication.

Responsible: Núcleo de Segurança Digital