OPEN SOURCE EVERYTHING:

In the absence of official information, OSINT researchers have been trying to plug the gaps by examining the claims of the new reports with public data. OSINT analysis is a powerful way to determine how an event may have unfolded. For instance, flight- and ship-tracking data can reveal movements around the world, satellite images show Earth in near real-time, while small clues in the backgrounds of photos and videos can reveal where they were taken. The techniques have uncovered Russian assassins, spotted North Korea evading international trading sanctions, identified potential war criminals, and documented pollution.

For the Nord Stream blasts, there was little OSINT available. Researchers identified "dark ships" in the area. But underwater, there are obviously limited data sources that can be tapped into--cameras and sensors don't monitor every inch of the pipelines. "OSINT probably won't break this case open, but it can be used to verify or strengthen other hypotheses," says Oliver Alexander, an analyst who focuses on OSINT and has been closely looking at the Nord Stream blasts. "I do think that it's more of a verification tool."

Alexander and others have been examining the claims made so far. The New York Times and Die Zeit both published stories on March 7 claiming a Ukrainian group was behind the sabotage. (Ukraine has denied any involvement.) Die Zeit published more details, claiming German investigators searched a yacht rented from a company based in Poland, knew where the yacht sailed from, and that six people were involved in the operation, including two divers. All of them used forged passports, the publication reported.

The details were enough for OSINT researchers to start tracking down which yacht could have been used. Alexander, as well as contributors to the open-source investigative outlet Bellingcat, started following the breadcrumbs, narrowing down potential vessels. A follow-up report soon named the boat under suspicion as the Andromeda, a 15-meter-long yacht. Webcam footage from the harbor where it is believed the Andromeda was docked shows the movement of a boat around the time reported by the publications. (The Andromeda is reportedly too small to be required to use ship-tracking systems.) Years-old videos and photos of the boat have surfaced. The sleuthing adds public details to the reports.

Similarly, OSINT has been used to debunk Hersh's story claiming the United States was behind the explosions. (Hersh has defended his article, while US officials have said it was false.) Alexander has used, among other things, ship-tracking data to show Norwegian ships were "accounted for" and not in a "position to have placed the explosives on the Nord Stream pipeline, as claimed by Hersh." Another detailed article from Norwegian journalists has similarly poured cold water on Hersh's claims, partly using satellite data.

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