Who runs OurDIU
OurDIU (ourdiu.com, which includes the question bank formerly at diuqbank.com) is a free set of tools for DIU students run by Sourov Biswas, an individual, not a company. It is an independent project, not an official service of Daffodil International University. In this policy, “I” and “me” mean Sourov, and “you” means anyone who visits the site.
The site has no ads and never sells or rents your data to anyone.
What is collected
When you browse, without signing in, nothing is linked to you by name. Google Analytics records which pages are visited, from what kind of device and roughly where (country or city), and how quickly pages load and respond, so I can see what’s useful and what’s slow. Cloudflare, which hosts the site, handles your IP address and browser details to deliver pages and block attacks.
When you sign in with Google, the site receives your name, email address, profile photo and Google account ID. Your photo is copied to the site’s own storage. Each sign-in keeps a session with the IP address and browser it came from, and the tokens Google issues for signing in. You also get a username, which you can change. If your Google name ends in a student ID (as many DIU accounts’ do), the ID is moved out of your name into your profile’s student ID.
When you add a passkey, the site keeps its public key (which can only check a log-in, not make one), when you added it and which kind of password manager or device keeps it, if your device says. Your fingerprint, face or screen lock never leaves your device. You can remove a passkey on your Account page.
On your profile you can add your student ID. It is optional, and your contributor page shows it unless you turn that off on your profile.
When you make a cover page, what you type is sent to the site to make the PDF or Word file and isn’t kept. If you tick “Remember my details”, your name, ID, section and department are kept in your browser, on your device only. If you choose “Open in Google Docs”, Google asks you to let OurDIU create files in your Google Drive (only files it creates, not the rest of your Drive); the cover page goes from your browser to your Drive, and the access Google gives stays in your browser, never on OurDIU’s servers.
When you upload a paper (this needs a DIU email address), the site stores the PDF, the details you chose (department, course, semester, exam type and the optional section or batch) and when you uploaded it. While it’s reviewed, the site also keeps the messages you and the site’s admins write about it, and each step of the review: when it was published, sent back for changes or rejected, and when you edited it, replaced its file or resubmitted it.
When you like, dislike or report a paper, the site stores your choice, and for reports the reason and any note you wrote.
When you save a paper, the site stores which papers you saved and when, so your Saved list is the same on the website and in the app. Only you can see it, and removing a paper from it deletes that record.
View counts aren’t tied to you: a cookie in your browser only remembers which pages it already counted today (see the cookie notice).
In the mobile app
The OurDIU app for Android collects the same account, upload and like, dislike or report data as the site, when you do the same things. It doesn’t use cookies.
- Signing in keeps a session token in your phone’s secure storage, so you stay signed in. Signing out removes it.
- Recent courses and your theme are kept on your phone only, and are removed when you uninstall the app. Saved papers are kept on your phone too, and once you sign in they are saved to your account, the same list as on the website.
- Google Analytics records which screens are opened and a few actions (signing in, opening the app from a link to the site, sharing or downloading a paper, starting and sending an upload), with the app’s version, your phone’s model and Android version, and roughly where you are (country or city). It uses an ID the app makes for itself, not your phone’s advertising ID, and it isn’t linked to your account. Clearing the app’s data or reinstalling it starts a new ID.
- Scanning a paper uses the camera through Google’s document scanner, which runs on your phone. Only the PDF you choose to upload leaves it. The same goes for PDFs you pick from your files or share to the app from another one.
How it is used
- To sign you in and show your account and uploads.
- To review uploads: check that a PDF is a question paper, read its details, compress it and publish it.
- To read the text of a paper, so a published paper’s questions can be read on its page and found by search.
- To credit contributors, rank papers by likes and views, and hide papers that several people report.
- To keep the site working, find bugs and stop abuse.
What other people can see
- Your name, photo and username, on your contributor profile and next to papers you published, with how many papers you shared and how often they were viewed.
- Your student ID, if you added one, on your contributor profile, unless you turn off “Show it on my contributor page” on your profile.
- Your published papers. Their downloadable copies carry a watermark with your name and the site’s address, and the text read off them is shown on their page and searchable.
Your email address, papers that are pending or rejected, review messages, and who liked, disliked or reported a paper are never shown publicly. The site’s admins can see them to review uploads and reports.
Teachers in the class routine
The Class Routine shows the routines DIU’s departments publish, with each class’s teacher by their initials. Next to them it shows a teacher’s name, designation, the room where they sit, work email and phone number where the department’s routine lists them or the site’s admins add them from what the university publishes. Each teacher also has a page with their week as the routine has it (the classes they teach, when, where and to which sections), found by initials or name. A teacher who wants a detail changed or removed can write to us (see the contact page) and we’ll do it.
Services that process your data
- Cloudflare hosts the site, its database and its file storage, including uploaded PDFs and profile photos.
- Google handles sign-in, runs Google Analytics, and its Gemini AI reads uploaded PDFs to check them, suggest their details and read their text.
- A PDF processing service I run compresses uploads and adds the watermark to published papers.
These services may process data outside Bangladesh. Each works under its own privacy terms.
How long it is kept
- Your account and profile, until it is deleted. A sign-in session ends after 7 days without use, or when you log out.
- Uploads that aren’t published yet, until you withdraw them or they are reviewed. Published papers stay in the bank so other students can keep using them.
- A paper’s review messages, as long as the paper: withdrawing or deleting it deletes them too.
- If your account is deleted, your likes, dislikes, reports and saved papers are deleted with it. Papers you published, and the review messages you wrote on them, stay, no longer linked to you; ask, and their public copies are re-made without your name.
What you can do
- Change your name, photo, username and student ID on your account.
- Withdraw uploads that aren’t published yet from your submissions.
- Ask for a copy of your data, a correction, or your account to be deleted (how deleting works), by emailing sourov2305101004@diu.edu.bd from the address you sign in with.
- Block or delete cookies in your browser, and turn off Google Analytics with Google’s opt-out add-on. The site works without analytics cookies.
Changes to this policy
If this policy changes, the date at the top of the page changes with it.