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Lego has taken its BrickLink marketplace offline after detecting what it calls “unusual activity”. The site has been down for three days while the company investigates; Lego has not said whether it was hacked or whether customer data was affected, the BBC reports.

BrickLink is used by collectors to buy and sell second-hand Lego and source bricks. Lego says it wants to understand what happened, contain the issue and check for related problems before restoring the marketplace. There is no return-to-service time frame. The BBC also reports a payment problem involving a limited-edition pre-order, which Lego said had been resolved and was not part of wider payment issues known to the company. Whether that problem is connected to the outage is unclear. The useful distinction, for now, is between suspicious activity and a confirmed breach: Lego has announced an investigation, not its findings.

Discuss: Should online marketplaces explain more while investigating an incident, or is it better to say little until they know whether customer data was exposed?

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