Beware, Swifties. A major British bank just issued a warning after fans lost an estimated $1 million in Taylor Swift concert ticket scams

Taylor Swift is coming to the U.K. this summer.

As pop icon Taylor Swift has been touring the world, her concerts have an economy of their own. Tickets and friendship bracelets for the event are part of the “Swiftie” fan experience, while the lead-up to her concerts has sold out hotel rooms and shaken up (quite literally) entire venues.

But some fans have encountered the unwelcome downside of all the excitement—the scams.

With Swifties gearing up to bring the Eras Tour back to the U.K. this summer, it turns out the number of frauds has been rising too.

Lloyds Bank, one of Britain’s largest banks, warned its 26 million customers this week that it, has seen a spike in ticketing scams for Swift’s upcoming concerts, with fans losing an estimated £1 million ($1.25 million) so far since tickets went on sale last July.

Over 600 customers have complained about being defrauded with fake tickets, Lloyds Bank said in a release Wednesday. Each victim parted with an average of £332 ($414) as a result, although some lost over £1,000.

The bulk of these cases were linked to Facebook Marketplace, the bank said.

It’s likely that far more people who are non-Lloyds Bank users have fallen prey to such ploys, raising the alarm about scammers who’re making the most of Swifties’ eagerness to watch her widely-anticipated tour. Even when Swift brought her tour to the U.K. last year, there was a jump in the number of ticket frauds reported.

“Cruel fraudsters have wasted no time in targeting her most loyal fans as they rush to pick up tickets for her must-see concerts,” said the bank’s fraud prevention director, Liz Ziegler.

“If you’re being asked to pay by bank transfer, particularly from a seller you’ve found on social media, that should immediately set alarm bells ringing.”

To be sure, such scams aren’t unique to Swift’s tour alone—fans of other artists like Harry Styles and Coldplay were also impacted by it.

The force that is Taylor Swift

When Swift arrives for her concert, cities are bracing themselves for inflation in local services linked to travel and accommodation.

For instance, in the lead up to the billionaire pop-star being in Sydney earlier this year, the Australian reserve bank governor Michele Bullock said the country had made some spending adjustments.

Countries have looked to Swift’s concert to help boost tourism, especially as the COVID-19 pandemic’s travel curbs are in the rear-view mirror.

But that’s not all—the “All Too Well” writer has seen the frenzy over her music pave the way for jobs to probe her cultural influence and has even helped send Vinyl sales to record highs.

With Swift’s U.K. stops nearing, people are waiting with bated breath to see her full impact on the economy—whether good or bad.

This story was originally featured on Fortune.com