Christian Panton

Russian Ropucha-class landing craft, transitting the Great Belt

The Kaliningrad Spoofer goes to Sea

Between June 13th and 15th, 2025, the intensity of GNSS spoofing in the Baltic — and, as we’ll see, the Kattegat — surged dramatically. This uptick didn’t go unnoticed: authorities issued alerts and advisories to mariners across the region. The disruption is visible on monitoring platforms like gpsjam.org, though that site is increasingly saturated. Its detection is based on ADS-B reports from aircraft experiencing degraded navigational accuracy — a method that, while useful, has limitations. ...

AIS positions of the ship FALCON (IMO: 9014432) plotted on a map in the Gulf of Finland,

Circling the Truth

In my previous blog post, “Going in Circles”, I explored two distinct GNSS spoofing systems operating in the Gulf of Finland, which manipulated ship positions into circular or hexagonal patterns. However, the region’s navigational anomalies aren’t solely due to wide-scale spoofing. Individual vessels have also been observed falsifying their locations, likely to obscure connections to Russian ports and evade sanctions. One such vessel is the LPG tanker FALCON (IMO: 9014432). Unlike the earlier cases where ships were unwitting victims of external spoofing, FALCON appears to be deliberately broadcasting deceptive AIS data. Its self-spoofing behavior results in conspicuous circular movement patterns, making the deception evident to observers. ...

AIS positions of ships plotted on a map in the Gulf of Finland, near the Russian-Finland border.

Going in Circles

Over the past year, there has been a marked increase in disruptions to satellite navigation systems across the Gulf of Finland, with reports of aircraft and ships receiving false GPS signals. Evidence points to GNSS spoofing activity originating from the Russian side of the border, raising questions about its purpose and impact. While some observers see it as a form of geopolitical signaling or electronic pressure, others suggest it may be a defensive measure—intended to shield strategic areas from potential drone incursions. In this post, I will dive into what I have identified as two distinct systems of GNSS-spoofing and see what we can learn about them based on self-reported AIS positions of ships. ...

Nanoleaf Shapes panels, lit in various colours, on a white wall

Nanoleaf Shapes deepdive, part 1

A large white wall at my house seemed to be the perfect canvas for Nanoleaf Shapes, combining functional lighting with an the possibly of making art, as you would be controlling each individual panel as large RGB-pixels. So I bought 30 panels and for the first couple of months everything just worked. But then the issues started, which all seem to be related to the controller, which can be connected to the side of panels. ...

Foto af to gæs, den ene sejler i en lille sø, den anden sejler i en vandbalje på land

DR, data og kampen om platformen

I de seneste par uger har der været en del larm om, at DRs streamingplatform indfører et tvunget login. I første omgang er brugere, der tilgår dr.dk, ramt, men fremadrettet bliver det også et krav for DRTV-appen og dit smart-TV. Op og ned om DRs login DRs login identificerer brugere baseret på en gyldig e-mailadresse (valideret via en e-mailchallenge) og et password. Følgende oplysninger bliver desuden efterspurgt, når du opretter et DR-login: ...