A government internet security chief has urged web users to use fake details when signing up to websites as a basic security measure.
"When you put information on the internet do not use your real name, your real date of birth. When you are putting information on social networking sites don't put real combinations of information, because it can be used against you," he said.
However, he said that there were occasions where correct information had to be used.
"When you are interacting with government, or professional organisations - people who you know are going to protect your information - then obviously you are going to use the right stuff," Smith said.
His advice was criticised by rival Labour MP Helen Goodman who said it was the use of fake details that allowed people get away with crime and cyber bullying.
"It is exactly what we don't want. We want more security online. It's anonymity which facilitates cyber-bullying, the abuse of children," she said, the BBC reported.
However, Smith found an ally in security consultant Graham Cluley from Sophos who wrote in a blog post that using fake information for security credentials, such as memorable questions, had some merits.
"No one is suggesting that you lie on websites about the personal information where the truth really matters, such as when you're filling in your tax return online," he wrote.
"But, on balance, I think we all need to be more careful about the information we share on the web - and realise that sometimes a little fibbing and reticence might go a long way to a safer online experience."
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