In 2008, Nokia Siemens Networks, a joint venture between Nokia and Siemens AG, reportedly provided Iran's monopoly telecom company with technology that allowed it to intercept the Internet communications of its citizens. The technology reportedly allowed Iran to use deep packet inspection to read and change the content of emails, social media, and online phone calls. The technology "enables authorities to not only block communication but to monitor it to gather information about individuals, as well as alter it for disinformation purposes".