Yahoo execs botched its response to 2014 breach, investigation finds


If your company has experienced a data breach, it’s probably a good idea to thoroughly investigate it promptly.

Unfortunately, Yahoo didn’t, according to a new internal investigation. The internet pioneer, which reported a massive data breach involving 500 million user accounts in September, actually knew an intrusion had occurred back in 2014, but allegedly botched its response.

The findings were made in a Yahoo securities exchange filing on Wednesday that offered more details about the 2014 breach, which the company has blamed on a state-sponsored hacker.

That breach, which only became public last year, involved the theft of user account details such as email addresses, telephone numbers, and hashed passwords. After Yahoo went public with it, the company established an independent committee to investigate the matter.

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