GNSS jamming and spoofing: when a hypothesis gradually becomes a... fact

Olivier JACQ — Sun, 15 Mar 2026 10:00:00 +0000

Over the past few days, there has been a noticeable increase in publications discussing GNSS interference, particularly GPS jamming and spoofing.

This brings me back to a case that is frequently cited in public and private reports, both in France and internationally: the collision that occurred off the coast of Oman between two vessels, which continues to be mentioned as an example of a collision “linked” to GPS spoofing.

What catches my attention is not the hypothesis itself.
GNSS interference in that region is documented and certainly not a new phenomenon. It obviously deserves to be taken seriously.

Maritime collision and GNSS spoofing: waiting for the facts before drawing conclusions

Olivier JACQ — Wed, 18 Jun 2025 10:00:00 +0000

Only a few hours after the collision between two vessels off the coast of Oman, the first claims attributing the accident to GNSS spoofing (GPS spoofing) began to circulate.

It is likely that we will soon see many screenshots and analyses claiming that GPS spoofing is responsible… or that it is not.

As is often the case with this type of event, it is better to wait for the results of the investigation before drawing conclusions.

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GNSS jamming and spoofing: when a hypothesis gradually becomes a... fact

Maritime collision and GNSS spoofing: waiting for the facts before drawing conclusions