>> The rising number of terror attacks having a chilling effect on social media around the world after last week's suicide bombing at Istanbul's main airport, which left 45 people dead. Turkey has again stifled Internet access says Reuters' Global Tech Editor Jonathan Weber.>> So after the bombings at the airport in Turkey last week, the Turkish government appears to have throttled or slowed down access to all the big social media sites.
And this has become quite a common pattern certainly in Turkey, and then also in many other countries in times of political uncertainty or instability. One of the risks here is that the threat of terrorism and terrorist propaganda is kind of used as an excuse to crack down on political dissent.
>> While Facebook, Twitter and YouTube have long been blocked in China, the blockage is widening raising concern. The widespread blocking of social media is aimed in part at stopping the spread of militant images and propaganda. One group that pushes for digital rights, also saying the number of Internet blockage cases is sharply up from last year.
In some cases, governments will order Internet service providers to block sites, and there are other ways.>> There's a variation of it which is called throttling, which involves slowing down access to these sites. So they just say, okay, we'll allocate much less bandwidth than you normally would to Facebook, and then when you try to go on to Facebook, it sort of, just the page doesn't really load, you can't really use it.
So, throttling is a way of kind of cutting off access to these services without it being so obvious.>> Turkey denies it engages in throttling, but human rights activists say, Turkey is one of the most aggressive in using Internet shutdowns and is using media crackdowns to quell political opposition.