Internet Censorship Tomáš Otava

Content of presentation

• How censors block the internet?

• Censorship in the world

• Censorship in the Czech Republic

How censors block the internet?

How censors block the internet?

Kinds of blocking

• Blocking by TLD (e.g. „.il“, „.com“)

• Blocking specific servers• Blocking specific websites (e.g. Facebook.com, youtube.com)

• Filtering of words and phrases in search engine(e.g. „democracy“, „holocaust“)

• Blocking specific cases/events (e.g. Tiananmen Square protests in China)

• Full block

Censorship in the world

No censorship

Some censorship

Under surveillance

Heavy surveillance

("Internet black holes")

Censorship in the world

People's Republic of China• More than 150 million people are in the internet• Chinese government has made the most sophisticated

system of censorship ever• Blocking all webpages about democracy, regime

change, independence of Tibet and youtube.com, facebook,com etc.

Censorship in the world

• Cuba – no access to the internet• North Korea – no access to the internet• Some Arab states – filtering some words as „sex“, „naked“

and „women's rights“• Syria – fitering servers YouTube, Facebook, Amazon and Hotmail

• During the Arab spring of 2011 censorship was extensive

Censorship in the Czech Republic

• In the Czech Republic can be a contract between provider and customer, which can reduce access to data

• Telefónica O2, T-Mobile and Vodafone have supported this „service“

• Mostly filtrated is child pornography, but we can´t find out, which websites are blocked

Censorship in the Czech Republic

IMAGINE

censorship in our state

Thank you for your attention

In this presentation was:• How censors block the internet?• Censorship in the world• Censorship in the Czech Republic