Black Friday deals have spread to black-market retailers hawking drugs, stolen data and fake IDs online, according to new reports.

The annual discounting bonanza for legitimate businesses is now also a staple of the internet underworld, digital security firm co-founder James Chappell told Sky News.

“We’ve seen the same strategies that online retailers and physical retailers use, being used in these criminal markets,” said Chappell, whose company is called Digital Shadows.

“We see them used either to provide discounts, ‘stack ’em high and sell ’em cheap’ type strategies, and we’ve seen the same with discount codes, introductions, building up excitement before the event, adverts that entice and enthuse,” he told the outlet.

A week before the big day, Chappell’s company found more than 1,600 posts about “Black Friday 2019” on dark web criminal forums, according to the Independent.

Cybercriminals in the UK make more in illegal online sales than any other European country, per a new report from the European Monitoring Centre for Drugs and Drug Addiction.

The report noted that British dark web retailers pulled in over $30 million USD between 2017 and 2018.