Chargeback fraud prevention for SARMs operators
- SARMs chargebacks run slightly higher than peptide (0.5-1.0% typical) and acquirers watch tighter (0.7% pause trigger).
- Research-chemical disclaimers help on representment but require consistent enforcement at checkout.
- True fraud dominates over friendly fraud (55/45) because SARMs carts attract card testing.
On this page
SARMs sits in a tighter chargeback regime than peptide. Acquirers know the vertical, watch ratios closely, and pause accounts at 0.7% monthly. The window between "normal operations" and "account review" is narrow.
SARMs chargebacks also skew differently than other high-risk verticals — true fraud outweighs friendly fraud. SARMs carts attract card testers because the average order value is $150-$400 and digital delivery is fast enough that fraudsters can flip product before the chargeback hits.
The 55/45 chargeback split for SARMs
True fraud — 55%
Stolen card + quick checkout + shipping before cardholder notices. Often residential-proxy IPs, card-testing patterns, freight forwarders as delivery addresses.
Friendly fraud — 45%
Customer received, then disputed. Often "didn't authorize" or "didn't recognize." SARMs customers are also more likely than peptide customers to dispute after using the product because the "research only" labeling creates a psychological path to "I shouldn't have bought this."
Pre-transaction rules — SARMs-specific
EMV 3DS with aggressive routing
SARMs operators should challenge 3DS more aggressively than peptide. Challenge on: BIN risk, velocity, freight-forwarder ship address, international IP mismatch, first-time customer over $200.
Conversion loss: 4-6%. True fraud reduction: 45-55%. Math works.
Device fingerprint + IP reputation
Residential proxies are the SARMs fraudster's favorite tool. Pure IP blocklists fail. Device fingerprinting (Sift, Fingerprint.com) catches the repeat device even behind rotating IPs.
Freight-forwarder blocking
Maintain a list of known freight-forwarder addresses (StackRY, Reship, MyUS, others). Decline or enhanced-review orders to these addresses. SARMs goes overseas fast and resale is the fraud ROI.
Velocity on email + card + device
- Same email + 3+ cards in 24h = decline
- Same card + 3+ emails in 24h = decline
- Same device + 5+ orders in 24h = review
High-risk BIN table
Certain prepaid BINs + specific foreign issuers carry 20-40x fraud rates. Auto-challenge above $150 for flagged BINs.
AVS + CVV
SARMs acquirers often require AVS match on all orders. Mismatches decline, not just challenge. CVV required.
Product velocity limits
Cap orders to 4-6 vials per customer per 30 days. Single-order cap $1,000 or so.
Friendly fraud prevention
Research-chemical disclaimer
Checkout must display "for research purposes only" disclaimer that customer acknowledges. Capture timestamp + IP. Representment evidence.
Descriptor strategy
"[BRAND] SUPPLY [phone]" or "[BRAND] RESEARCH [phone]" — avoid "SARMs" or compound names on the descriptor. Customer recognition + lower dispute friction.
Order confirmation + delivery email
Same standard as peptide. Immediate confirmation, shipping notification, delivery confirmation, 3-day follow-up.
Easy refund / return
30-day return on unopened product. Reduces chargebacks more than it costs in refunds.
Representment for SARMs
Evidence packet
- Order confirmation (timestamp + email)
- Research-chemical disclaimer acknowledgement (timestamped + IP)
- Shipping tracking + delivery scan (signature if captured)
- Delivery confirmation email
- Follow-up email engagement
- AVS + CVV match
- IP + device fingerprint at checkout
- Customer login activity post-delivery
- Prior clean orders from same card
Reason-code-specific counters
- 4837 (no cardholder authorization): AVS/CVV + device + IP + prior clean history
- 4855 (goods not received): Delivery scan + follow-up email + customer activity
- 4853 (not as described): Product page match + disclaimer acknowledgement + refund policy link
- 4863 (not recognized): Descriptor clarity + order confirmation + engagement
Target metrics
- Representment win rate: 45-55% for strong SARMs programs (lower than peptide because of research-chemical context)
- Chargeback ratio: 0.3-0.5% stable
- True fraud: under 0.2%
- Friendly fraud: under 0.3%
Multi-brand SARMs operator — portfolio controls
3+ SARMs brands warrant:
- Shared device/IP/card blacklist across brands
- Shared freight-forwarder blocklist
- Portfolio-wide fraud vendor (Sift, Signifyd) sharing intelligence
- Unified representment team with SARMs-specific templates
- Cross-brand customer history in fraud scoring
See SARMs operator playbook and chargeback ratios across sub-brands.
What not to do
- Don't ship without freight-forwarder check — overseas resale is the biggest true-fraud vector.
- Don't skip 3DS on SARMs — the fraud rate is too high.
- Don't put compound names in the descriptor — friendly fraud spikes.
- Don't fight representment without the disclaimer acknowledgement — acquirers downweight your evidence.
- Don't accept prepaid cards over $200 without enhanced review — it's where testers concentrate.
What to do next
Pull your last 90 days of chargebacks. Split by true vs friendly fraud. If true > 55%, invest in pre-transaction rules (3DS, device, freight-forwarder block). If friendly > 50%, invest in post-transaction hygiene (descriptor, confirmation flow, follow-up).
Portfolio SARMs operators should implement shared fraud controls. Our application covers portfolio-level assessments.