The Republic of Yemen limits its citizens' internet access through two state-controlled ISPs using commercial filtering technology. It demonstrates particular sensitivity around security issues, criticism of the government, and relations with Saudi Arabia. While internet access is not formally restricted, costs are prohibitively high for many Yemenis. TeleYemen, the largest ISP, bans content deemed obscene, offensive, inconsistent with Islam, defamatory, or threatening to security or national unity. OpenNet Initiative testing found pornography was the primary target of filtering by both ISPs, with other content types filtered to varying degrees.