# Focsec

> Threat detection and IP intelligence API to detect VPNs, proxies, TOR, bots, and datacenter IPs.

Important notes:
- For technical integration details (endpoints, request/response fields, errors, limits), prefer the API documentation.
- Data quality: data is high quality, maintained by a dedicated data team, updated daily, and sourced by our in-house team.

## Product

- [Homepage](https://focsec.com/): product overview and primary use cases.
- [Proxy / VPN Detection API](https://focsec.com/proxy-vpn-detection-api): features and positioning.
- [Pricing](https://focsec.com/pricing): plans and trial information.
- [Contact](https://focsec.com/contact): sales and support contact.

## API Basics:
- Base URL: https://api.focsec.com/v1/
- Authentication (required for all endpoints):
  - Recommended: send your API key in the HTTP Authorization header as the raw key value:
    - Authorization: <YOUR_API_KEY>
  - Alternative: provide your API key as a query parameter:
    - ?api_key=<YOUR_API_KEY>
- Example request URL: https://api.focsec.com/v1/ip/205.169.39.51?api_key=your-api-key-here

## API Documentation

- [API Documentation](https://docs.focsec.com/): REST API reference including authentication, IP lookup endpoint, database downloads, errors, and request limits.
- [API Status](https://focsec.instatus.com/): uptime and incident history.

## Legal

- [Terms and Conditions](https://focsec.com/terms): service terms and limitations.
- [Privacy Policy](https://focsec.com/privacy): data handling and privacy information.

## Guides & Research

- [Does the UK Online Safety Act ban VPNs?](https://focsec.com/blog/does-the-uk-online-safety-act-ban-vpns): what the Act does and doesn’t say; practical implications for services.
- [The UK Online Safety Act and VPNs](https://focsec.com/blog/the-uk-online-safety-act-and-vpns): compliance risks and why VPN circumvention matters.
- [VPN Detection And The UK Online Safety Act](https://focsec.com/blog/vpn-detection-uk-online-safety-act): why VPN detection may be part of “highly effective” measures in practice.
- [Detect If Employees Are Working Abroad On A VPN](https://focsec.com/blog/detect-if-employees-are-working-abroad-on-a-vpn): VPN detection methods for location compliance in remote work.
- [The Case Of Soham Parekh: Detect Employees Using A VPN](https://focsec.com/blog/the-case-of-soham-parekh-detect-employees-vpn): case study and detection approaches.
- [How To Block AI and LLM agents, bots and scrapers](https://focsec.com/blog/how-to-block-ai-and-llm-agents-bots-scrapers): detecting and blocking AI/LLM scrapers and datacenter traffic.
- [How to Prevent LLM Bots from Scraping Your Website for Training Data](https://focsec.com/blog/prevent-llm-bots-from-scraping-your-website): practical controls to reduce unwanted crawling and scraping.
- [How to Block TOR Users](https://focsec.com/blog/how-to-block-tor-users): TOR risks, detection, and mitigation strategies.
- [How To Detect TOR Traffic](https://focsec.com/blog/how-to-detect-tor-traffic): approaches for identifying TOR usage.
- [How To Detect Proxy Users](https://focsec.com/blog/how-to-detect-proxy-users): proxy detection methods and tradeoffs.
- [Detecting VPNs and Proxies: An Essential Step in KYC and AML Processes](https://focsec.com/blog/vpn-detection-in-kyc-and-aml-processes): compliance-focused use cases and implementation notes.
- [VPN Detection for Online Casinos and iGaming Platforms](https://focsec.com/blog/vpn-detection-igaming-and-casinos): preventing geo-restriction bypass and related abuse.
- [Protecting Online Multiplayer Games with VPN and Proxy Detection](https://focsec.com/blog/detecting-vpn-in-online-games): anti-cheat / ban evasion / fairness use cases.
- [Combat Affiliate Fraud with Proxy and VPN Detection](https://focsec.com/blog/combat-affiliate-fraud-with-vpn-detection): affiliate fraud patterns and prevention signals.
- [Identifying VPN and Proxy IPs to Combat Click Fraud](https://focsec.com/blog/ad-clickfraud-with-vpn-and-proxy-ips): reducing ad fraud using proxy/VPN signals.
- [Multiple Accounts Abuse: Strategies to Protect Your Business and Profits](https://focsec.com/blog/prevent-multiple-account-abuse): account abuse patterns and controls.
- [Detecting VPNs through Latency Measurements: An In-Depth Analysis](https://focsec.com/blog/vpn-detection-using-latency-measurement): latency-based approaches and limitations.
- [How To Stop Prevent Pricing Abuse](https://focsec.com/blog/how-to-stop-prevent-pricing-abuse): reducing geo/pricing abuse with better location signals.