There’s a saying — “practice what you preach.” If you give advice, make sure it’s something you follow personally. Turns out, some security pros aren’t doing that. A survey of 306 infosec professionals at London’s Infosecurity Conference 2008 from Lastline showed that 45 percent commit one of the biggest security cardinal sins — reusing passwords across accounts. I don’t really have to explain why this is bad. If you use the same credentials across multiple different services and just one of them is compromised, the attacker can gain access to all of them. Now, there’s a caveat here. There’s no…

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