Bangalore: A new survey conducted by YouGov for the Information Commissioner's Office found that most students are concerned that the personal details they share on social networking sites, such as Facebook, as well as other networking sites, might affect their future career prospects. The survey found that four out of 10 students (42 percent) are worried that Facebook postings could reappear and affect them in future. The study also highlighted that many students are not sufficiently protecting themselves against the risk of identity theft. A third of students who have dwelled at several addresses while at university still have not methodized the redirection of their most important post to their current university address. Two thirds of students have never analyzed their credit rating, allowing suspicious credit applications to go unnoticed, finds the researchers. Speaking to the Telegraph's Christopher Graham, the information commissioner, said "In tough times , young people are clearly less relaxed about privacy, particularly in relation to information that they post online - but many may not know what they can do about it."