Off-Platform Contact & Direct Payment Bans
At BDX (Bangladesh Digital Exchange), maintaining a strict zero-tolerance policy against off-platform communication and direct seller payments is essential to preserving market integrity, buyer security, and operational trust. BDX operates an escrow-based digital marketplace where funds are held safely until delivery is confirmed. Bypassing BDX systems exposes users to severe fraud risks and permanently voids all platform protections.
🚫 Zero-Tolerance Off-Platform Directives
BDX strictly prohibits any attempt to move transaction discussion, order delivery, or financial payment outside the official BDX platform architecture. This ban applies universally across all public listings, seller store pages, buyer requests, offer descriptions, pre-sale comments, and private message threads (/messages).
Prohibited Actions Include
- Sharing Personal Contact Details: Posting, transmitting, or requesting mobile numbers, WhatsApp contact cards, Telegram handles (
t.me/*), Discord tags, Facebook profile links (fb.com/*, Messenger handles), Skype IDs, personal email addresses, or external website URLs. - Direct Payment Solicitations: Inviting buyers to send money directly to personal Mobile Financial Service (MFS) accounts—such as bKash Personal, Nagad Personal, Rocket, Upay, or direct bank accounts—outside the BDX checkout gateway (
/checkout/{offer}). - Offering Off-Platform Discounts: Enticing buyers with lower prices, fee waivers, or extra digital goods if they complete the purchase outside BDX.
- External Delivery Execution: Delivering digital keys, account credentials, gift card codes, or top-up confirmations via external channels without logging the complete proof inside the BDX order workspace.
⚠️ The Danger of Off-Platform Deals: Why BDX Enforces Strict Bans
Off-platform trading is the single primary vector for digital goods fraud, account theft, and non-delivery scams in Bangladesh. Understanding the risks highlights why BDX maintains strict technical controls:
[ Unsafe Off-Platform Flow ]
Buyer ──(Direct bKash/Nagad)──> Rogue Seller ──(Deletes Telegram/WhatsApp)──> Buyer Loses Money (No Escrow, No Recourse)
[ Safe BDX Escrow Flow ]
Buyer ──(Checkout Payment)──> BDX Escrow ──(In-App Delivery)──> 7-Day Protection ──(Confirmed)──> Seller Payout
1. Loss of Escrow Guarantee
When you purchase through BDX checkout, your money is securely deposited into BDX Escrow. The seller is only paid after delivery is confirmed or after the 7-day buyer protection window passes without unresolved disputes. Direct bKash or Nagad payments to sellers offer zero protection—once sent, funds cannot be recalled.
2. Lack of Dispute Evidence
BDX administrators cannot investigate disputes, issue refunds, or hold sellers accountable if the transaction occurred over WhatsApp, Telegram, or Facebook. External screenshots, chat logs, or payment receipts are easily altered or forged and cannot be accepted as valid proof during arbitration.
3. Account Ownership & Recovery Risks
Purchasing digital accounts (Steam, Valorant, EA, Epic) or subscriptions off-platform frequently results in sellers reclaiming account access via original recovery emails days after receiving direct payment. Inside BDX, delivery of credentials is logged, and seller payout is held during the 7-day protection period.
🔍 Technical Monitoring & Circumvention Detection
BDX continuously monitors platform interactions using automated security engines and pattern matchers defined in App\Support\BdxMessageSafety and App\Support\BdxBuyerRequestSafety. Attempting to obfuscate contact details or hide payment numbers triggers instant technical detection.
Common Obfuscation Tactics Detected by BDX
- Spelling Variations & Spaced Words: Writing
w-h-a-t-s-a-p-p,w.h.a.t.s.a.p.p,tele-gram,t e l e g r a m,face book, ord-i-s-c-o-r-d. - Phonetic & Leetspeak Substitutions: Using terms like
01712-THREE-FOUR-FIVE,b-K-a-s-h me,call zero-one-seven..., or substituting numbers with symbols (01712*345*678). - Bangla Script Obfuscation: Writing MFS names in Bangla alongside numbers (e.g.,
বিকাশ নম্বর 017...,নগদে পে করুন,রকেটে টাকা পাঠান). - Divided Digits Across Multiple Messages: Sending phone numbers broken into smaller segments across multiple consecutive lines.
Our system normalizes all input via NFKC transformations, strips invisible zero-width space glyphs, and evaluates string structure against nationwide 11-digit mobile number signatures (013-019 series with optional +88 country prefix), blocking the submission before it reaches the recipient.
⚡ Account Penalties & Permanent Ban Escalation
Violations of the off-platform contact policy carry strict, automated, and manual enforcement actions:
| Violation Severity | Detection Mechanism | Immediate Consequence | Account Status Escalation |
|---|---|---|---|
| Attempted Sharing (Single) | Real-time BdxMessageSafety regex check | Message blocked instantly; warning displayed to sender. | System log recorded; safety score lowered. |
| Repeated Obfuscation Attempts | Algorithmic frequency threshold | Immediate 24-hour chat suspension; notification sent to moderation team. | Account placed under Admin Review (Flagged). |
| Confirmed Off-Platform Payment Solicitation | Buyer report or admin audit | Complete store listing suspension; active orders frozen. | 14-day store freeze or permanent seller ban. |
| Off-Platform Fraud / Scamming | Dispute investigation | Immediate account termination; forfeiture of pending payout wallet balance (BdxWallet). | Permanent IP, device, and identity ban across BDX. |
🛡️ What to Do If a User Asks to Trade Off-Platform
If a buyer or seller prompts you to communicate via WhatsApp/Telegram or asks for direct payment:
- Refuse the Request: State clearly inside the chat: "I only complete trades inside BDX for buyer and seller protection."
- Do Not Send Direct Money: Never send bKash, Nagad, Rocket, or Bank transfers to personal numbers provided in chat or external links.
- Report the User: Use the Report User / Thread button on the chat workspace or order page to notify BDX administrators immediately.