Really enjoyed this scoop from the Financial Times, where a team of reporters identified 48 seemingly independent companies working from different physical addresses that appear to be operating together to disguise the origin of Russian oil, particularly from Kremlin-controlled Rosneft. The kicker: The network was discovered because they all share a single private email server.

From the (paywalled) story:

"The FT was able to identify 442 web domains whose public registrations show they all use a single private server for their email, “mx.phoenixtrading.ltd”, showing that they share back-office functions."

"The FT was then able to identify companies by comparing the names in the domain to those of entities that appear in Russian and Indian customs records as involved in carrying Russian oil."

"For example, Foxton FZCO, a Dubai-based entity listed as the buyer of $5.6bn of oil in Russian export filings, matches “foxton-fzco.com”. Similarly, Advan Alliance, an entity listed in Indian filings as having sold $1.5bn of Russian oil into the country, can be linked to “advanalliance.ltd”. "

"Filings linked by the FT to the domain list show oil exports from Russia amounting to more than $90bn."

https://www.ft.com/content/4310f010-2b3c-493e-ba0a-26dc6d156b2e