"Identity theft" 是指有人冒用他人的身份信息，或者利用他人的身份信息进行欺诈或其他不当行为。这种犯罪通常是通过在网上窃取身份信息或者盗取邮件来实现的，也可能是通过在垃圾桶里寻找丢弃的信用卡账单或者其他文件来获取信息。

下面是一些关于身份盗窃的英文例句及其中文翻译：

"I just found out that someone has been using my credit card information for identity theft."
（我刚发现有人在用我的信用卡信息进行身份盗窃。）

"I received a letter from the bank saying that there had been suspicious activity on my account, and it turned out that my identity had been stolen."
（我收到了银行的信，说我的账户有可疑活动，原来是我的身份被盗了。）

"I had to cancel all of my credit cards and get a new social security number after my identity was stolen."
（我的身份被盗后，我不得不取消所有信用卡，并获得一个新的社会保障号码。）

"Identity theft is a serious crime that can have long-term consequences for the victim."
（身份盗窃是一种严重的犯罪，可能会给受害者带来长期的后果。）