Privacy Policy
Last updated: 14 October 2026
This policy explains what personal data StackSentinel collects, why, and what we do with it. StackSentinel is operated by DNS Knowledge Engineering Pvt. Ltd. (CIN U74120MH2016PTC272243), Thakur Complex, Kandivali East, Mumbai 400 101, Maharashtra, India (“we”, “us”). We decide how this data is used, so we are its data fiduciary under India’s Digital Personal Data Protection Act, 2023.
What we collect
| Data | Why |
|---|---|
| Account: your email address, your password (stored only as a bcrypt hash), your plan and its expiry date, and your sign-up date | To run your account, apply your plan and let you sign in |
| Monitors: the names and addresses of the websites, servers, domains, cameras and recorders you add, and any usernames and passwords included in them | To run the checks you ask for |
| Check results: status, response times, DNS, SSL, stream and disk details, error messages, and camera snapshots taken during stream checks | To show your dashboards and history, and to send alerts |
| Alert settings: your Slack webhook address and push-notification topic, if you add them | To deliver alerts where you ask |
| Messages: the name, email and message you send through our contact form or by email | To reply to you |
| Technical data: IP address, browser type, pages requested and times, recorded by our web server and by Cloudflare | To deliver the Service, keep it secure and fix faults |
If a camera snapshot shows people, it contains personal data about them. You are responsible for having the right to monitor that camera and for telling people about it where the law requires.
Cookies and browser storage
We do not use advertising or analytics cookies. After you sign in, your browser keeps a login token, valid for 7 days, in its local storage, along with your display preferences (theme, time zone and error display). Cloudflare may set a strictly necessary security cookie to tell people from automated traffic.
How we use your data
- To provide the Service: run checks, show results and send alerts.
- To manage your account and plan, and to provide support.
- To keep the Service secure and to fix problems.
- To meet legal obligations, for example tax and accounting records.
We do not sell personal data, and we do not use it for marketing without your consent.
Who we share it with
- Cloudflare, Inc. delivers and protects stacksentinel.net and forwards email sent to our addresses.
- Google Fonts, Tailwind CSS and jsDelivr supply fonts and page scripts. Your browser loads these directly, so those providers receive your IP address.
- Slack receives the alerts you choose to send to your workspace.
- Google LLC (Gmail) hosts the inboxes that receive our email.
Our servers, database and push-notification server are run by us in Mumbai, India. Some of the providers above may process data outside India. We do not transfer personal data to any country the Government of India has restricted. We may disclose personal data where the law requires it, for example to a court or a law-enforcement agency acting under legal authority.
How long we keep it
- Check history is deleted automatically after 7 days on the free trial and Starter plan, 30 days on Pro, and 1 year on Enterprise. Deleting a monitor deletes its check history straight away.
- Your account and monitor settings are kept while your account is open.
- When your account is closed, we delete your account, monitors and check history within 30 days.
- Web server access logs, which record IP addresses, are deleted after 14 days.
- We keep correspondence for as long as we need it to help you, and invoices for as long as tax law requires.
Security
The Service runs only over HTTPS, passwords are stored as bcrypt hashes, and access to our servers is limited to the people who run the Service. For cameras and recorders, please give StackSentinel a dedicated, read-only account rather than an administrator’s login.
Your rights
Under the Digital Personal Data Protection Act, 2023, you can ask us to:
- tell you what personal data we hold about you and how we use it
- correct, complete or update it
- erase it, unless the law requires us to keep it
- stop using it, where we rely on your consent
- let someone you nominate exercise these rights if you die or are unable to act
Email [email protected]. We aim to reply within 30 days. If you are not satisfied with our response, you can complain to the Data Protection Board of India.
Children
StackSentinel is a business service. We do not knowingly collect personal data from anyone under 18.
Changes to this policy
If we change this policy, we will publish the new version here with a new “last updated” date. If a change is significant, we will also tell you by email.
Contact and grievances
Grievance Officer: Vasant Dhoble, Managing Director, DNS Knowledge Engineering Pvt. Ltd.
Email: [email protected]
Post: DNS Knowledge Engineering Pvt. Ltd., Thakur Complex, Kandivali East, Mumbai 400 101, Maharashtra, India