There was a student whose identity was stolen. His social security number was used to apply for student loans. He had no idea until he got a notice from the loan company. He then had to go through a lot of trouble to prove that it wasn't him who applied for those loans. It took months to clear his name and his credit score was severely damaged in the meantime.
Sure. One story is about a woman who received a call from someone claiming to be from her bank. They asked for her account details, saying there was a problem with her account. She innocently provided the information and later found out that all her savings were gone. Another case involved a man whose identity was stolen to open multiple credit cards. He only found out when he received bills for huge amounts of debt that he didn't incur.