The one where the
supplier account details changed with a sophisticated copy email

Advice was provided to a Middle Eastern company in relation to obtaining information concerning third parties that had caused them to transfer funds to a party they thought to be their supplier.  The client had been subject to authorised push payment fraud which led to transfer of money to unidentified third parties.  

Advice was provided to the Middle Eastern company to obtain details from the third-party bank where monies had been transferred.  The recipient bank managed to retain some of the money diverted.  After agreeing terms on an indemnity, the company could obtain recovery of some of the monies diverted