When email scammers land on a new trick, they’ll generally keep it up until law enforcement and the general public wise up. Then the hackers move on to another ploy. But a scheme in which scammers pose as a major law firm in order to extract money from unsuspecting victims keeps on resurfacing.

The latest firm to be invoked by online attackers is Sidley Austin, according to a scam alert posted last week by the U.K.’s Solicitors Regulation Authority.