Enlarge (credit: ashleymadison.com)

Four years after hackers dumped the intimate details of 32 million Ashley Madison subscribers, criminals have revived an extortion scheme that targets people who used the dating website to cheat on their partners.

In the past two weeks, researchers have detected “several hundred” emails that threaten to air those intimate details to the world unless the former subscribers pay a hefty fee.

“I know everything about you,” one of the emails, dated January 15, says. “I even know that you ordered some … let’s call them ‘male assistance products’ online on 12/11/2018 using your account at Bank of America N,a routing# 121000358 account# [redacted] for $ 75 for mailing to [redacted] CA [redacted]!” The extortionist goes on to say: “If you do not act very fast your full AMadison profile and proof of it will be shared with friends, family, and online over social media—and of course your internet orders.”