• Social network

• Microblog: 140 letters per message

• Possibility to update account by

mobile phone or email

• Twitpic: to upload pictures

Founded by:

Biz Stone Jack Dorsey Evan Williams

History:

• 2006: developed for the employees of

ODEO

• Product of the company OBVIOUS

• 2007: disincorporated and

independent company

USERS: • Germany: 30,000 active users

• New registrations per week: 4,000

• Active use longer than one month: 40 %

• Used by public entities, companies, news

channels and for political campaigns

Security Problems:

• 1st in 2007: possibility to manipulate SMS

and publish a message on behalf of

someone else

• 2nd in 2009

Privacy Policy

• Submission of personal data that is collected by twitter

• Consent to transfer and processing of your data

• Share with 3rd parties under certain conditions• Disclose of information to government, law

enforcement officials…• Transfer of assets: also transfer of your data