Starlink Faces Major Security Test as Iran Cracks Down on Dissent

Iran’s intensifying crackdown on protesters is becoming one of the toughest real-world stress tests yet for Elon Musk’s Starlink satellite internet service  a system that has increasingly served as a lifeline when governments shut down online access.

SpaceX, which owns Starlink, made the service free for Iranians this week, placing the company squarely in the middle of another geopolitical flashpoint. The move pits a team of U.S.-based engineers against a regional power equipped with satellite jammers and GPS spoofing tools, according to activists and security experts.

How well Starlink withstands Iran’s efforts to disrupt it will be closely watched by U.S. military and intelligence agencies that rely on Starlink and its military-grade version, Starshield. China is also paying attention as it develops its own rival satellite internet networks. With SpaceX considering a public listing this year, the Iran situation is also shaping up as a high-profile demonstration of Starlink’s resilience for investors.

“We’re still in the early days of space-based communications, and SpaceX is really the only provider operating at this scale,” said John Plumb, former Pentagon space policy chief under President Joe Biden. “Repressive regimes think they can still turn off communications but that may soon no longer be possible.”

Russia, which has already deployed sophisticated countermeasures against Starlink in Ukraine, is likely studying Iran’s interference tactics closely, said Victoria Samson of the Secure World Foundation. “A lot of actors are watching how Starlink performs here,” she said.

Protesters Rely on Starlink to Share Evidence

Reports suggest thousands of protesters have been killed in Iran in recent days, though the full scale of the violence remains unclear due to government-imposed communication restrictions. Starlink has become crucial for sharing videos and images from inside the country, as it is far harder to disrupt than traditional internet cables or mobile towers.

Raha Bahreini of Amnesty International said her organization has verified dozens of videos showing protesters killed or injured by Iranian forces  most of them believed to have been sent via Starlink. However, she noted that widespread communication blackouts have made it difficult to fully assess the scope of the crackdown.

Although Starlink is banned in Iran, tens of thousands of terminals are believed to have been smuggled into the country. Holistic Resilience, a U.S.-based nonprofit helping deliver terminals, says it is working with SpaceX to track Iranian efforts to jam the system.

Jammers, Fake GPS Signals, and Terminal Hunts

Starlink’s network of roughly 10,000 low-orbit satellites moving at extremely high speeds makes it harder to disrupt than traditional satellite systems. Still, experts say Iran is attempting to interfere using satellite jammers and GPS spoofing broadcasting fake location signals to confuse Starlink terminals.

“These fake signals can cripple the connection,” said Nariman Gharib, a UK-based cyber investigator who analyzed data from a terminal inside Iran. “Text messages might get through, but video calls are basically impossible.”

Iran has spent years trying to counter Starlink. During protests following the death of Mahsa Amini in 2022, Musk said nearly 100 terminals were active in the country. After a brief war with Israel last year, Iran’s parliament passed laws imposing severe penalties for using or distributing Starlink equipment.

Tehran has also pursued diplomatic pressure, urging international regulators to force the U.S. and Norway where Starlink is registered to block the service. Iranian officials have admitted in international forums that they are struggling to locate and disable Starlink terminals on the ground.

As Iran tightens its grip, Starlink’s ability to stay online may shape not only the flow of information inside the country, but also the future of satellite-based internet in global conflicts.