Slashdot Mirror


Sri Lankan Terrorists Hack Satellite

SorryTomato writes "The Tamil Tigers Liberation Front a separatist group in Sri Lanka, which has been classified as a terrorist group in 32 countries has moved up from routine sea piracy to a space-based one. They have been accused of illegally using Intelsat satellites to beam radio and television broadcasts internationally. Intelsat says that they will end the transmissions 'within days.' Intelsat has been accused of having business links with Hezbollah before, but claim that they are blameless this time and LTTE was using an empty transponder."

10 of 330 comments (clear)

  1. How? by wesmills · · Score: 3, Interesting

    OK, because at least someone on Slashdot knows, I have to ask: how would they do this? Is there some form of access key or security needed to uplink to a transponder, or is it simply a matter of finding the right satellite and frequency? I would hope that the latter is not true, but "security by obscurity" is a well-known (amusingly) procedure in many companies..

    1. Re:How? by mangu · · Score: 5, Interesting
      at least someone on Slashdot knows, I have to ask: how would they do this? Is there some form of access key or security needed to uplink to a transponder, or is it simply a matter of finding the right satellite and frequency?


      I know, because I work for a satellite company. Communications satellites normally have no protection at all, if you know the right frequency, have a powerful enough transmitter and antenna, and know where to point your signal, you can do it. And it's *extremely* difficult to avoid, there are very few technical countermeasures. You can beam a more powerful carrier over the pirate, but this means you lose the bandwidth anyhow and, in case of an intentional interference, the pirate can just shift his frequency and start over.


      It happens all the time accidentally. Sometimes amplifiers are defective, or they are inadvertently turned to the wrong frequency. These accidental interferences happen everywhere, and cost millions of dollars per year for every operator in terms of bandwidth that becomes unusable.


      Since a satellite has a wide coverage area, it's very difficult to find the transmitter. There are some very expensive systems to locate interferences, they work based on small shifts in frequency and time that depend on the transmitter location, but these systems cannot locate a transmitter with an accuracy better than tens of miles. After finding the general area where the interference originates, one must sweep the whole region with a helicopter equipped with a directional antenna. Very messy and very expensive.

  2. Not really suprising by Anonymous Coward · · Score: 4, Interesting

    Hacks of satellites have been predicted by experts numerous times before; the older ones were, rather worryingly, designed mostly with security by obscurity. Need uplink codes? Probably not a problem if you can get near to the ground station with appropriate equipment, no radio transmission is 100% directional.

    IIRC it was one of the Blackhat conference speakers who outlined the nasty possibility of a satellite somewhere in a geosynchronous constellation being hijacked and deliberately crashed into another one. Given that this area is fairly densely populated, the debris could start a chain reaction and do a lot of damage.

  3. Re:And why does it matter that they are 'terrorist by Anonymous Coward · · Score: 5, Interesting

    After taking a look at your past comments, it seems more likely that you just wanted to rationalize the antics of the violent insurgents that are basically destroying my native country, because you like that they're anti-American rebels. (Although they ARE part of the reason I came to the US, I have to thank them for that.)

    Mods- I'm not trolling here-- look at his profile if you don't believe me.

  4. Re:And why does it matter that they are 'terrorist by aadvancedGIR · · Score: 2, Interesting

    Whatever they say, the large majority of the terrorists cannot be seriously called "freedom fighters".
    People who used terrorism agains nazi occupation in several european countries and to a certain extend some of the intifada fighters may claim that title as long as they only attacked military or police targets of a brutal occupation force or dictatorship in their homeland. Tamil tigers might have fallen in that category, but they really have too much innocent blood on their hands.
    But on the other hand, although I hate GWB as much as any other non-US citizen, I refuse that title to people who, for example, come from Iran or Syria (or any other place) to Irak and blindly kill civilian because bringing chaos to Irak serves the political agenda of the country that funds them.

    And yes, propaganda can be a tool of terrorism.

  5. Re:The Best Hackers by Heembo · · Score: 3, Interesting

    Is it really that hard to hack satellites? Is the security not so great since there are few people who actually have the capacity to try such tricks?

    --
    Horns are really just a broken halo.
  6. Re:And why does it matter that they are 'terrorist by Anonymous Coward · · Score: 4, Interesting

    Very insightful, it is also exactly what is happening in Sri Lanka. I have personally witnessed a civilian being beaten up by the Sri Lankan army: on the main road connecting the capital to the parliament. People who travel to the war torn east of the country have told me such things happen regularly there. I shudder to think what happens out of sight and in more of the way places.

    The LTTE are very ruthless and achieved their position partly by killing any dissenters. They are also the world leaders in suicide bombings, both in the number of attacks and the technology used. I suspect if the Sri Lankan forces had been more restrained, the LTTE's own brutality would have undermined them.

    They are certainly ingenious and are unique among their peers in operating on land, sea and in the air - they recently used light aircraft to bomb an air force base, and had dropped bombs and got away before the air force get its air craft off the ground.

    In the meantime, Sri Lanka faces horrible side effects from war. Corruption, vote-rigging, suppression of free speech, a rise in Buddhist fundamentalism and huge economic damage.

    On a more cheerful note, its a great time to go to Sri Lanka on holiday. The hotels are dirt cheap. The conflict is localised, foreigners are not targets, and you would be safe from violence as long as you avoid the north and east of the country. The risks from Sri Lankan driving are another matter....

    Posting anonymously for obvious reasons: my profile links to my blog and I do not want to make unnecessarily make enemies in Sri Lanka as I spend a lot of time there. The fact that I feel it necessary to be anonymous should tell you a lot about the state of free speech in Sri Lanka.

  7. Some basic facts: by 140Mandak262Jamuna · · Score: 4, Interesting
    The state adjacent to Sri Lanka in India is also populated by Tamils. The State government is very sympathetic to the Tigers in Sri Lanka. Most parties in that state notionally support the Sri Lankan Tamils, even the Congress party whose leader and ex-Prime Minister Rajiv Gandhi was assassinated by the Tigers. The current ruling party of that state was a pioneer in using Sattelite TV transmissions and owns many TV channels. When the TV was a Govt of India's monopoly (in the 1990s), that party used to make TV programes in Chennai, India, and send the tape to Phillipines and uplink from that country. That TV network, SunTV, and its sister channels are heavily infiltrated by the Tiger Cadres and sympathizers. I am very sure the hijack is done with active help and collusion of SunTV conglomerate insiders on the technical divistion.

    It might not have been approved by the higher ups either in the family/party. India's Minister for Communication Kalanidhi Maran, is a nephew of the Chief Minister of Tamil Nadu and their family owns the SunTV conglomerate. Tigers are to be feared, their pledge of alligiance to their leader Prabakaran supercedes any other consideration.

    Trying hard to present NPoV without my biases. Hope I succeeded.

    --
    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
  8. Re:Why not have encrypted transponders by Fastolfe · · Score: 2, Interesting

    The satellites that carry a lot of the TV and telephone transmissions are decades old. They simply aren't capable of doing any of this, and it's impractical to attempt to upgrade them. You can put measures like this in newer communications satellites that go up, but those old satellites aren't going anywhere, and so long as they're still running, it's not economical to abandon them.

    It's always been assumed that it would be cost-prohibitive for random malcontents to obtain access to the hardware needed to successfully uplink a signal (or interfere with one) to a satellite, and for all intents and purposes, it is, to this day.

    In addition, a lot of the transmissions going over these satellites remains analog, either audio or video. An encryption scheme like the one you're suggesting would only work if the satellite were data-only, which would require costly upgrades for a lot of the people using satellites for analog transmissions today. It's not just the broadcasters (the uplink) that would need to digitize the data, but everyone that receives those transmissions would have to have equipment to decode it.

    With that said, digitized signals and data encryption are used on a lot of transmissions today, but the satellites generally play no role in that layer of the transmission. They remain "bent pipes" and simply retransmit what they hear (analog). This can be useful to differentiate on the ground between authorized and unauthorized transmissions (no "hijacking" of an encrypted transmission), but won't help if the authorized transmission is simply overpowered by the interfering one. (And, indeed, even in the data-only case, you'd still have this problem.)

  9. Re:And why does it matter that they are 'terrorist by Rei · · Score: 2, Interesting

    [quote]That the U.S. had goodwill before 9/11 and then threw it away with the invasion of Iraq is a myth. [/quote]

    You are the one reciting a myth. After 9-11, Le Monde proclaimed, "We are all Americans". The band outside Buckingham palace played the Star-Spangled Banner. All around the world, vigils were held, marches were held, and US embassies were plastered with flowers. Have you forgotten so soon? Well, perhaps polls will help remind you.

    In some countries, positive opinions of America have more than halved.

    --
    The big brain am winning again! I am the greetist! Now I am leaving for no particular raisin!