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SILICON VALLEY — Facebook routinely buys stolen passwords from the black market, in hopes of notifying people when their passwords on the site are not secure, Chief Security Officer said at a technology conference Wednesday.
“The reuse of passwords is the No. 1 cause of harm on the Internet,” Alex Stamos said, according to CNET.
Hackers who steal passwords often batch them together into lists, which they sell online. Stamos didn’t say how often Facebook bought such lists, or how much they…