# Technology — guides & evidence

Understand AI API routing, token bills, cloud limits, VPN privacy and mobile plans. Technical details that change cost and risk.

[Canonical HTML page](https://nosecrets.app/en/topics/technology)

## [A travel eSIM may include data, but no calls or local number](https://nosecrets.app/markdown/en/stories/travel-esim-data-only-roaming)

Check device compatibility, carrier lock, data-only limits and your home line's roaming settings before buying.

Scope: International travel · iPhone examples; carrier terms vary

## [Cheap broadband: compare the price after the promotion](https://nosecrets.app/markdown/en/stories/broadband-label-intro-price-fees)

A Broadband Facts label helps separate introductory prices, extra charges, speed and data allowances.

Scope: United States · Broadband Facts labels

## [Free VPN or 'earn from bandwidth'? Check who uses your connection](https://nosecrets.app/markdown/en/stories/free-vpn-residential-proxy-bandwidth)

A 2026 FBI warning describes apps and schemes that can route other people's traffic through residential connections.

Scope: FBI / IC3 consumer warning · residential-proxy participation

## [Is your AI proxy serving the model you paid for?](https://nosecrets.app/markdown/en/stories/ai-proxy-model-routing-transparency)

Provider switching, model fallback and undisclosed substitution are different things. A model label alone cannot settle the question.

Scope: AI gateways · OpenRouter as a documented example

## [Cheap AI credits can hide an expensive token bill](https://nosecrets.app/markdown/en/stories/ai-proxy-token-billing-audit)

Compare the amount actually charged for a request. Visible answer length is not the complete bill.

Scope: Token-billed AI APIs · documented OpenRouter fields

## [An AI model's privacy promise may not cover your proxy](https://nosecrets.app/markdown/en/stories/ai-proxy-privacy-more-than-model-policy)

Your prompt passes through more than one business. Check the gateway, the upstream provider and any connected tools.

Scope: Third-party AI gateways and their upstream providers

## [LLMjacking: when someone else's cloud account pays the AI bill](https://nosecrets.app/markdown/en/stories/llmjacking-cheap-ai-stolen-credentials)

Security researchers documented stolen credentials and a proxy mechanism. Low pricing alone does not establish that a reseller uses it.

Scope: 2024 cloud-security research · AI access supply chains

## [Deleting an app does not settle its subscription](https://nosecrets.app/markdown/en/stories/delete-app-cancel-subscription)

Start with who bills you. Removing software, stopping renewal and requesting a refund are different actions.

Scope: Apple / Google Play billing · regional exceptions

## [An AWS budget alert is not a hard spending cap](https://nosecrets.app/markdown/en/stories/aws-budget-alert-not-spending-cap)

A budget threshold can warn you after costs have accumulated. Automated restrictions require a separate setup.

Scope: AWS accounts using AWS Budgets