Using BiznTools
Security
Current safeguards, their limits and reporting a security concern.
Limit the data the application handles
Calculations run in your browser. There is no account database or file-upload service. Business-finance calculators do not store their figures; Time Card can save a card and reusable schedule locally, and Invoice Generator can save a local draft and business details when you choose it. Copy and Print use browser features at your request; the destination you choose can retain the result.
Optional analytics requires consent and accepts only allowlisted nonfinancial events. Calculator figures are excluded.
Implemented safeguards
The hosted site uses HTTPS. Application headers restrict framing, content sniffing and unnecessary device permissions. Inputs have supported formats and numerical limits; calculation tests check expected results and boundary cases.
Dependencies are pinned, and installation, build and browser checks are part of release verification. These measures reduce specific risks; they are not a security audit, penetration test, compliance certification or guarantee. Browser extensions, your device and a copied or printed result are outside the application’s control.
Reporting a security concern
When the support contact below is available, use it for suspected vulnerabilities. Describe the affected page and safe reproduction steps without passwords or confidential records. Do not access other people’s data or disrupt the service.
The site does not offer a formal bounty program or promise a response deadline. The same contact channel will handle security concerns; no separate department is implied.