bigtk Privacy Policy

Section 1

Information We Collect

bigtk collects personal data from you in several ways: directly through the account registration process and subsequent use of the platform, automatically through technical systems as you browse and interact with the site, and from third-party sources such as payment providers and identity verification agencies where these are engaged as part of our Know Your Customer (KYC) process.

1.1 Information You Provide Directly

When you register a bigtk account, make a deposit or withdrawal, contact our support team, or participate in a promotion, you may provide us with the following categories of personal data:

Data Category	Examples	When Collected
Identity Data	Full legal name, date of birth, NID number, passport number	Registration and KYC verification
Contact Data	Mobile phone number (Bangladeshi), email address	Registration
Financial Data	bKash / Nagad / Rocket / Upay account number, bank account details	Deposit and withdrawal processing
Account Credentials	Username, encrypted password	Registration
Communications Data	Support chat transcripts, email correspondence, complaint records	Support interactions
KYC Documents	Scanned NID, passport image, driving licence, utility bill	Identity and age verification

1.2 Information Collected Automatically

When you access and use the bigtk platform, our systems automatically collect certain technical and behavioural data. This data is collected through server logs, cookies, and similar tracking technologies embedded in the platform:

• Device and Browser Data: Device type, operating system, browser type and version, screen resolution, and language settings.
• Network Data: IP address, approximate geographic location derived from IP (country and city level), internet service provider.
• Usage Data: Pages visited on bigtk, time and duration of visits, betting history, game session history, search queries within the platform, clickstream data.
• Transaction Data: Records of all deposits, withdrawals, bets placed, bets settled, bonuses claimed, and balance movements on your bigtk account.
• Session Data: Login timestamps, logout timestamps, session duration, and active session identifiers.

1.3 Information from Third Parties

In certain circumstances bigtk receives personal data about you from third-party sources. This includes identity and age verification data returned by KYC service providers when we submit your documents for verification, fraud risk scores returned by payment fraud detection systems, and transaction status data returned by mobile banking operators such as bKash, Nagad, Rocket, and Upay during payment processing. bigtk handles all third-party-sourced personal data under the same standards applied to data you provide directly.

Section 2

How We Use Your Information

bigtk processes your personal data only where there is a lawful basis for doing so. The primary lawful bases on which bigtk relies are: performance of a contract (operating your account and delivering the services you have requested), legal obligation (complying with KYC, anti-money laundering, and age verification requirements), and legitimate interests (fraud prevention, platform security, and service improvement). Where we rely on your consent to process data, you have the right to withdraw that consent at any time.

2.1 Account Management and Service Delivery

We use your identity and contact data to create and maintain your bigtk account, verify your identity and age, process your deposits and withdrawals via bKash, Nagad, Rocket, Upay, and supported Bangladeshi bank accounts, settle your sports bets and casino game results, send you account-related notifications (such as deposit confirmations, withdrawal updates, and security alerts), and respond to your support queries.

2.2 Legal and Regulatory Compliance

bigtk is obligated to process certain personal data in order to meet its legal and compliance responsibilities. This includes conducting age verification checks to prevent underage gambling, performing anti-money laundering (AML) checks on account activity and financial transactions, maintaining records of transactions and account activity as required by applicable record-keeping obligations, and cooperating with law enforcement or regulatory authorities where legally required to do so.

2.3 Fraud Prevention and Platform Security

bigtk uses automated and manual processes to analyse account behaviour, transaction patterns, and device data to detect and prevent fraud, money laundering, bonus abuse, collusion, and other prohibited activities. Where our systems flag suspicious activity, a human review will be conducted before any action is taken against an account. Data processed for fraud prevention purposes is handled securely and is not used for any other purpose.

2.4 Marketing Communications

Where you have given your explicit consent at the time of registration or through your account settings, bigtk may send you promotional communications about new games, sports betting markets, seasonal offers (such as BPL season, IPL, Eid, or Pohela Boishakh promotions), and platform updates. These communications will be delivered via SMS to your registered Bangladeshi mobile number or via email. You may opt out of marketing communications at any time by updating your notification preferences in your bigtk account settings or by contacting support at [email protected]. Opting out of marketing will not affect the delivery of transactional and security notifications, which are sent regardless of marketing preference.

2.5 Platform Analytics and Improvement

bigtk uses aggregated and anonymised usage data to understand how players interact with the platform, identify areas for improvement, monitor the performance of games and betting markets, and develop new features. Analytics processing uses data in aggregated form wherever possible and does not involve making automated decisions that produce legal or significant effects on individual players.

Section 3

Data Sharing and Third Parties

bigtk does not sell, rent, or otherwise transfer your personal data to third parties for their own commercial use. We share personal data with third parties only in the limited circumstances described in this section, and only to the extent necessary for the stated purpose.

3.1 Payment Processing Partners

To process your deposits and withdrawals, bigtk shares the minimum necessary financial and identity data with our payment processing partners. These include mobile banking operators (bKash, Nagad, Rocket, Upay) and Bangladeshi banking partners (Dutch-Bangla Bank, BRAC Bank, City Bank, Islami Bank). These partners process your payment data solely for the purpose of executing the requested transaction and are contractually prohibited from using it for any other purpose.

3.2 Identity and Age Verification Providers

bigtk engages third-party KYC and identity verification service providers to assist in verifying the identity and age of account holders. Where your KYC documents are submitted for verification, the relevant data is shared with our verification partner under strict data processing agreements. Verification providers are only permitted to use your data for the purpose of conducting the requested check and returning a result to bigtk.

3.3 Game and Platform Technology Providers

The bigtk platform integrates games and live casino products from third-party providers including Pragmatic Play, Evolution Gaming, NetEnt, Microgaming, Spribe, and Ezugi. When you launch and play games provided by these studios, certain session data (such as your account identifier, bet amounts, game results, and session timestamps) is exchanged with the relevant game provider in order to deliver the game experience and settle results accurately. Game providers do not receive your identity documents, payment account details, or marketing preferences.

3.4 Fraud Prevention and Security Services

bigtk may share certain technical and behavioural data (such as IP address, device fingerprint, and transaction patterns) with specialist fraud prevention and cybersecurity service providers. These partners help bigtk identify and block fraudulent account activity, unauthorised access attempts, and abuse of the platform's promotional infrastructure.

3.5 Legal and Regulatory Disclosure

bigtk may disclose personal data to law enforcement agencies, regulatory authorities, or courts where we are required to do so by applicable law, or where disclosure is necessary to protect the rights, property, or safety of bigtk, our players, or the public. In such cases, bigtk will disclose only the specific data that is required and will not volunteer additional information beyond what the legal request demands.

Section 4

Cookies and Tracking Technologies

The bigtk platform uses cookies and similar technologies (including local storage and session storage) to keep the platform operational, remember your preferences between sessions, maintain your login state, and collect aggregate analytics data about how the platform is used. This section explains what each category of cookie does and how long it persists.

4.1 Cookie Categories

Cookie Type	Purpose	Retention
Strictly Necessary	Maintain your login session, remember your account preferences, enable the sports betting and casino interfaces to function correctly. These cookies cannot be disabled without breaking core platform functionality.	Session / up to 30 days
Functional	Remember your display preferences (such as odds format and language setting), pre-fill your registered payment method on the deposit screen, and retain your game lobby filters between visits.	Up to 90 days
Analytics	Collect anonymised and aggregated data about which pages are visited most frequently, where users spend the most time, and which features are used or ignored. Used solely to improve the platform — never linked back to individual player identities.	Up to 12 months
Security	Detect and prevent fraudulent login attempts, cross-site request forgery, and other security threats. These cookies are essential for protecting your bigtk account.	Session

4.2 Managing Your Cookie Preferences

You can control and delete cookies through your web browser's settings. Most modern browsers allow you to block or delete cookies on a site-by-site basis or globally. Please note that disabling strictly necessary or security cookies may impair your ability to log in to your bigtk account or use core platform features. Disabling analytics or functional cookies will not prevent you from using the platform, but may mean that certain preference-based features work less effectively between sessions.

For guidance on managing cookies in the most commonly used browsers, please refer to the help documentation for your specific browser. bigtk does not control third-party cookies set by game providers when you launch a game within our platform; please refer to the relevant provider's privacy policy for details of cookies they may set.

Section 5

Data Security and Retention

bigtk takes the security of your personal data seriously and implements a range of technical and organisational measures designed to protect your data against unauthorised access, accidental loss, destruction, or disclosure. No system can guarantee absolute security, but bigtk's security practices are designed to match the sensitivity of the data we hold and the risk environment in which we operate.

5.1 Technical Security Measures

• SSL/TLS Encryption in Transit: All data transmitted between your device and bigtk's servers is encrypted using TLS 1.2 or higher. This protects your credentials and payment information from interception during transmission.
• Encryption at Rest: Sensitive personal data stored in bigtk's databases — including payment account identifiers and identity document data — is stored in encrypted form. Encryption keys are managed separately from the encrypted data.
• Access Controls: Access to systems holding personal data is restricted to bigtk employees and contractors who have a genuine operational need. Access is granted on a least-privilege basis and is reviewed periodically.
• Intrusion Detection: bigtk's infrastructure is monitored around the clock for signs of unauthorised access attempts, unusual traffic patterns, and other indicators of compromise.
• Password Security: Account passwords are never stored in plain text. bigtk uses strong one-way hashing algorithms to store password data, meaning that even internal staff cannot read your password.

5.2 Data Retention Periods

bigtk retains your personal data only for as long as is necessary for the purpose for which it was collected, or for as long as we are required to retain it under applicable law. The following general retention guidelines apply:

• Active Account Data: Retained for the duration of your account's active status plus a minimum post-closure period required for legal and compliance purposes.
• Transaction Records: Financial transaction records, including deposits, withdrawals, and bet history, are retained for a minimum of five years following the date of the transaction, in accordance with applicable financial record-keeping requirements.
• KYC Documents: Identity and age verification documents are retained for a minimum of five years following account closure or the completion of the relevant KYC check, whichever is later.
• Support Communications: Records of your support interactions with bigtk are retained for a minimum of two years from the date of the interaction.
• Analytics Data: Anonymised and aggregated analytics data may be retained indefinitely as it cannot be linked to individual players.

5.3 Data Breach Response

In the event that bigtk becomes aware of a personal data breach that poses a risk to the rights and freedoms of affected players, bigtk will take immediate steps to contain the breach, assess its scope and impact, and notify affected account holders as promptly as practicable. Notification will be delivered to your registered mobile number or email address. bigtk will also report the breach to relevant authorities where required by applicable law.

Section 6

Your Data Rights

As a bigtk account holder, you hold a number of rights in relation to the personal data that bigtk processes about you. bigtk respects these rights and will respond to all legitimate data rights requests in a timely manner. To exercise any of the rights listed below, please contact our support team at [email protected] with the subject line "Data Rights Request" and a description of the specific right you wish to exercise.

6.1 Summary of Your Data Rights

• Right of Access: You have the right to request a copy of the personal data that bigtk holds about you, along with information about how it is being used. bigtk will provide this information within a reasonable timeframe following identity verification.
• Right to Rectification: If any personal data bigtk holds about you is inaccurate or incomplete, you have the right to request that it be corrected. Minor corrections (such as updating a contact number) can often be made directly through your account settings.
• Right to Erasure: In certain circumstances, you may request that bigtk delete personal data we hold about you. This right is not absolute — where bigtk is required by law to retain certain data (such as financial transaction records), we cannot delete that data in response to an erasure request. We will explain clearly which data can and cannot be deleted and why.
• Right to Restrict Processing: You may request that bigtk pause or limit the processing of your personal data in certain circumstances, for example while a correction request is being assessed.
• Right to Object to Marketing: You have an unconditional right to object to the processing of your personal data for direct marketing purposes. If you object, bigtk will stop sending you marketing communications immediately.
• Right to Withdraw Consent: Where bigtk processes your data on the basis of your consent, you may withdraw that consent at any time. Withdrawal of consent does not affect the lawfulness of any processing that took place before the withdrawal.

6.2 Identity Verification for Data Requests

To protect the security of your personal data, bigtk requires that you verify your identity before we can fulfil any data rights request. This typically involves confirming your registered mobile number and providing a piece of identifying information linked to your bigtk account. bigtk will not fulfil data rights requests without adequate identity verification, as doing so could expose your personal data to an unauthorised party.

6.3 Response Timeframes

bigtk aims to acknowledge all data rights requests within 5 business days (Bangladesh Standard Time, UTC+6) and to provide a substantive response or the requested data within 30 calendar days of receiving a verified request. Where a request is particularly complex or bigtk receives a high volume of requests simultaneously, we may extend this timeframe by a further 30 days, in which case we will notify you of the extension and the reason for it.

Section 7

Children's Privacy

The bigtk platform is an adult gambling service intended exclusively for persons aged 18 years or older. bigtk does not knowingly collect, process, or store personal data belonging to individuals under the age of 18. 18+

If bigtk discovers, or has reasonable grounds to believe, that an account is held by or used by a person under the age of 18, the account will be immediately suspended pending investigation. If the suspicion is confirmed, the account will be permanently closed, all funds in the account (including deposits, winnings, and bonuses) will be forfeited, and any personal data associated with the underage account will be handled in accordance with our legal obligations and deleted to the extent permitted by law.

If you are a parent or guardian and you believe that a minor in your care has registered a bigtk account, please contact us immediately at [email protected]. bigtk will investigate and, where the concern is confirmed, take the account closure steps described above as a matter of priority.

Section 8

Policy Updates and Contact

bigtk reserves the right to update, revise, or replace this Privacy Policy at any time in response to changes in applicable law, changes to our data processing practices, or improvements to our platform that affect how personal data is handled. When we make material changes to this Policy, we will update the "Last Reviewed" date shown at the top of this page and, where the changes are significant, we will notify registered account holders via SMS or email to their registered contact details.

8.1 Continued Use as Acceptance

Your continued use of the bigtk platform following the publication of a revised Privacy Policy constitutes your acceptance of the revised Policy. If you do not agree with any changes made to this Policy, you should cease using the platform and, if applicable, contact our support team to close your account. bigtk will always make the most current version of this Privacy Policy accessible at https://bigtk.net/privacy-policy.

8.2 Governing Language

This Privacy Policy is published in English. English is the authoritative language of this document. Any translation made available for convenience purposes is provided on a best-efforts basis and carries no legal effect. In the event of any inconsistency or conflict between the English version of this Policy and any translation, the English version shall prevail in all circumstances.

8.3 How to Contact Us About Privacy

If you have any questions about this Privacy Policy, wish to exercise any of your data rights, or want to report a privacy concern, please contact the bigtk support and compliance team using the details below. Our team is available 24 hours a day, 7 days a week, including Bangladeshi public holidays such as Eid, Victory Day (December 16), and Independence Day (March 26).

bigtk is committed to resolving all privacy-related enquiries fairly, transparently, and in plain English. We treat every data rights request with the same seriousness, whether it comes from a player in Dhaka, Chittagong, Sylhet, Khulna, Rajshahi, Barisal, Rangpur, Mymensingh, or Cox's Bazar.