Sustained jamming of Thuraya L-band mobile satellite service from three sites in Libya (2006)
What happened
For more than six months in 2006, the L-band mobile satellite communications signals of Thuraya Satellite Telecommunications of Abu Dhabi were compromised by emitters at three widely separated locations inside Libya, at least one of them a restricted military site. Libya was at the time one of Thuraya's shareholders. Because, in SpaceNews's words, "Thuraya's owners include government-owned telecommunications operations from most Arab and Muslim governments in the region", the jamming was initially assumed to be of US or Israeli origin. When it did not cease or change characteristics, Thuraya manoeuvred its satellite at 44 degrees east and watched the change in jamming signal strength to bound the emitter's geographic location, with technical assistance from the prime contractor, Boeing Satellite Systems International. Thuraya then sent representatives to the areas where the jamming antennas were thought to be; at one site, a Libyan military installation, they were denied access and told to turn around. The jamming ceased in late August 2006 after a diplomatic initiative by the government of the United Arab Emirates. One official's account of the motive is that those jamming believed smugglers moving contraband from Chad or Niger into Libya were using Thuraya satellite phones, and may not have realised the effect their transmissions were having well beyond Libya's borders. The episode dealt a blow to Thuraya's 2006 revenues.
Not a broadcast incident. It is in this batch because the brief grouped it with the 2005 Libyan jamming, and it is retained on its own because it is a well-described intentional-interference event whose geolocation method is documented in more operational detail than any other source in the batch. Every substantive claim in the source is attributed to unnamed officials familiar with the episode, and Thuraya and Boeing both declined to discuss it, which caps the record's confidence at moderate. The reported motive, disrupting smugglers' satellite phones, would make the wide-area effect collateral rather than intended; that is one official's account and is recorded as such.
Attack vector
Sustained transmission into the L-band receive band of a geostationary mobile-satellite spacecraft from three separate ground sites inside one country, at least one of them a military installation.
Operational impact
More than six months of compromised mobile satellite communications service across Thuraya's coverage, extending well beyond the jamming state's own borders, with a measurable effect on the operator's 2006 revenues.
Affected segments
link, space, user
SPARTA techniques evidenced
Each row is a technique this record evidences, with the reasoning and the source that attests to it.
What relationship, confidence, and evidence mean on the rows below
- Relationship
What kind of link this is between the technique and the target.
Mitigates: the target actively prevents, detects, or recovers from the technique.
Addresses: the target governs the technique or is relevant to it, without interdicting it. Most governance and policy obligations sit here.
Triggers obligation: the technique occurring is what triggers the duty the target imposes.
Relates to: related to the technique, but the target neither interdicts nor governs it. Used sparingly.
- Confidence
How strongly the source supports this mapping, not how severe the technique is.
High: the source supports the mapping squarely.
Moderate: supported, with a qualification such as a cross-tactic reading that stays operationally sound.
Low: the source reaches the technique only in part.
- Evidence
How close to the source text the mapping was made.
Direct: a verbatim excerpt of the cited source was read against the technique, and the rationale argues from that excerpt.
Derived: the mapping follows from the source's scope or structure, with no on-point excerpt addressing the technique.
Inferred: reached by composition through another framework, or by domain reasoning the source does not support on its face.
The source describes months of intentional interference with a satellite's L-band communications signals from identified ground sites, ending when the emitters stopped. That is EX-0016 in full, including its clause that attribution is hard because the source can be small and that the effect is completely reversible once the jammer is disengaged.
The geolocation method is the evidence. Thuraya bounded the source by slewing the spacecraft and watching the jamming signal strength rise and fall, which only works if the interfering energy is entering the spacecraft's own receive antenna pattern. That is EX-0016.01's stated geometry: the jammer must lie within the spacecraft's receive footprint. Derived because the source never uses the word uplink and because EX-0016.01's effect clause is written about telecommand and ranging traffic, whereas the affected traffic here was user service.
Three fixed emitter sites operating outside any authorised ground architecture, one of them a military installation that refused entry to the operator's representatives. That is the fielding of an actor's own transmitting ground system, which is IA-0008.01's description. Derived on the same tactic ground as elsewhere: the objective was denial, not access to the spacecraft's command path.
The service was compromised for more than six months with a revenue effect, rather than eliminated. Temporary impairment of the use of a system over a period is IMP-0002.
Sustaining interference against a geostationary spacecraft's receive band for over six months from three separate sites implies transmit-capable ground stacks at each, and the source records that Thuraya expected to find jamming antennas at the sites it visited. Derived: the equipment is inferred from the operator's search for it, not inventoried.
Considered and not mapped
These techniques were considered for this record because a source, a related record or SPARTA's own catalogue pointed at them. Each was read against what the sources say and not mapped. The reason is given in full.
SPARTA cites Thuraya at IMP-0003, but through the 2011 press release, which belongs to the separate 2011 Libyan episode. For 2006 the source says the signals were compromised and revenue was affected; it does not say service was eliminated. Under this batch's rule that is IMP-0002 alone.
Considered and rejected because IMP-0004 is permanent impairment. The revenue loss is commercial harm, not degradation of the system, and service resumed when the emitters stopped.
Considered. The source does not describe the acquisition of jamming equipment, only its inferred presence, so the resource-development claim would rest on the same inference already carried by RD-0001.01.
Sources
The published accounts this record rests on. The tier is SafeMode Space's own assessment of the source, and the reason for it is given beside it. What the tiers mean and how they are assigned: the source tiers.
A source is listed when a mapped technique rests on it, or when it disputes the account. One the curators read but neither cited nor recorded as disputing the record is not listed, so an absence here means neither is true rather than that nobody looked.
Tier 2: Specialist satellite-industry reporting by the outlet's Paris bureau chief, working from named-role but unnamed industry and operator officials.
Every source SafeMode Space reproduces, and on what terms: sources and attribution.