Secretary of State Hillary Clinton on Thursday warned that Internet technologies were a mixed blessing because they are used by al Qaeda to spread hatred and by authoritarian states to crush dissent.

The same networks that help organize movements for freedom also enable al Qaeda to spew hatred and incite violence against the innocent, she said in a major speech in Washington.

And technologies with the potential to open up access to government and promote transparency can also be hijacked by governments to crush dissent and deny human rights.

(Reporting by Arshad Mohammed; Editing by Stacey Joyce)