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Yahoo security breach that exposed 450,000 usernames and passwords from a site on the huge web portal indicates that the company failed to take even basic precautions to protect the data.
Security experts were left bemused as to why a company as large as Yahoo would fail to cryptographically store the passwords in its database. Instead, they were left in plain text, which means a hacker could easily read them.
"It is definitely poor security," Marcus Carey, a security researcher at Rapid7, said. "It's not even security 101. It's basic application development 101."
