Monoprice temporarily stopped taking orders in March 2010 after customers reported unauthorized charges on payment cards they had used at the retailer. The shutdown and forensic investigation were real; what remained unresolved was whether Monoprice’s own systems had been the source of the card fraud.
What happened at Monoprice?
Monoprice reportedly took its website offline around midnight on Friday, March 5, 2010, after receiving emails and calls from customers who said their cards had been used fraudulently. The retailer notified law enforcement, card processors, card companies and outside security specialists, then suspended new orders while its systems were examined.
By March 9, the site could reportedly be browsed, but customers still could not place orders. Contemporary coverage by Krebs on Security and CSO Online described the action as a precaution while investigators tried to determine how the fraud occurred.
This was a March 2010 incident, not a current Monoprice outage.
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Timeline of the shutdown and investigation
| Date | What the public record says |
|---|---|
| March 5, 2010 | Monoprice took the site offline after customer complaints, according to an operations manager quoted by Krebs. |
| March 7–9 | The outage became public. The site reportedly returned in a browse-only state while ordering remained disabled. |
| March 9 | Contemporaneous reports quoted Monoprice saying investigators had not found evidence that card information had been stolen from its computer network. |
| March 22 | A later account said the store had been closed from March 5 through March 22. This duration comes from secondary reporting rather than a currently accessible company notice. |
| March 25 | A later update quoted by Missing Remote described network rebuilding and additional security work. |
| March 29 | A Massachusetts breach-report search record lists Monoprice with this incident date. The accessible record does not establish whether it was the attack date, a notification date or an administrative classification. |
What Monoprice confirmed—and what it did not
Monoprice acknowledged that customers had reported misuse of their card information and said outside forensic investigators were examining its environment. Its initial public position was that no evidence of stolen card information had yet been found on Monoprice’s network.
That wording matters. “No evidence found” described the state of the investigation at that time; it did not prove that no compromise had occurred. Investigators can face incomplete logs, delayed fraud, third-party payment systems or an intrusion that leaves little immediately visible evidence.
The strongest contemporaneous conclusion is therefore limited: customer complaints were serious enough to trigger a costly precautionary shutdown, but the public statements did not establish that Monoprice’s own network had stolen the data.
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What customers reported
Contemporaneous comment threads described unauthorized or “test” charges appearing after Monoprice purchases, sometimes involving services such as iTunes, World of Warcraft, Microsoft TechNet, Megaupload and Blizzard. CSO referred to “dozens” of complaints, while Krebs described “several” customers.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Those comments show the pattern customers were seeing, not a verified victim count or forensic finding. A cardholder could have used the same card at multiple merchants, and some charges could have been unrelated. The available reporting does not prove that every reported transaction came from one incident or one checkout path.
Could the fraud have come from somewhere else?
Yes, but no alternative source was established. Customers speculated about PayPal, payment processors, another merchant, malware or a compromise elsewhere in the payment chain. The public record does not identify the payment route used by every affected shopper or demonstrate that any particular processor caused the fraud.
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This is why “Monoprice was hacked” is too definite for the initial evidence, while “nothing happened” is also misleading. The reports, shutdown and investigation are documented; the precise point at which card data may have been exposed was not.
How Monoprice responded after the shutdown
A March 31 account at Missing Remote, quoting a March 25 Monoprice update, said the company rebuilt portions of its network with new hardware and software, reviewed web-application source code and databases, improved firewall controls, and began vulnerability scanning through Trustwave and McAfee Secure.
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The same account said Monoprice was working with Accudata toward Level 1 PCI DSS certification. It also quoted the company saying card payments were processed in real time without card data being stored on Monoprice’s own servers. That is a company statement reproduced by a secondary source, and it should not be generalized to every payment path or third-party system.
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These measures show how a retailer might respond even before investigators can prove a breach: stop the transaction flow, preserve evidence, rebuild or harden systems, and involve payment-industry and law-enforcement partners.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What later records add
The Massachusetts Office of Consumer Affairs 2010 breach report search record lists Monoprice and a March 29 incident date. Without the underlying fields establishing the event type, data involved and affected population, that entry cannot resolve the attack path or prove that card numbers were stolen from Monoprice.
It is best read alongside the other evidence: company statements initially reported no confirmed theft from the network; independent reporters documented the shutdown and complaints; later accounts documented substantial security remediation; and a state record suggests a reportable incident was associated with Monoprice. Those facts can coexist without identifying exactly what happened technically.
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What affected customers should have done
- Review statements immediately. Look for unauthorized transactions, including small test charges and delayed fraud.
- Call the card issuer. Ask whether the card should be blocked or replaced and dispute transactions through the issuer’s process.
- Change reused passwords. If a Monoprice password was used elsewhere, replace it there too.
- Preserve records. Keep order confirmations, emails, dates and screenshots that may help the issuer or investigators.
- Watch for phishing. Be cautious of messages claiming to be from Monoprice, a bank or a payment processor.
Card protections vary by payment method, card network, issuer and jurisdiction, so no universal liability outcome should be assumed. A clean statement does not prove a card is safe; fraud can appear later.
How to describe the incident accurately
- Confirmed: Monoprice suspended orders after multiple customers reported fraudulent charges and notified relevant authorities and payment partners.
- Reported: Customers described unauthorized transactions and, in some cases, small test charges.
- Initially unproven: The public investigation had not found evidence that card data was stolen from Monoprice’s network at the time of the March 9 statements.
- Later documented: Monoprice reportedly rebuilt and hardened systems and pursued additional PCI and vulnerability-testing controls.
- Still unknown: Whether one compromise caused all complaints, which payment path was involved, what data—if any—was taken, and whether the March 29 state-record date marks an attack or a later report.
The Bottom Line
Monoprice’s March 2010 shutdown was a fraud-triggered security response, not proof by itself of a confirmed network breach. The fairest description is a possible payment-card compromise whose exact source remained unconfirmed while the retailer investigated and rebuilt its security controls.
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