Former Yahoo CEO Marissa Mayer will be quizzed by the Senate Commerce Committee on today about her involvement in the data breaches that brought down the firm.
But according to reports, the Committee had to threaten Mayer with a subpoena in order to persuade her to appear.
Mayer will be questioned over the role she played in the massive security breaches experienced at Yahoo while she was in charge, which affected billions of accounts.
However, according to a report from technology site Recode, she would only agree to stand before the Committee after it had issued a subpoena demanding her appearance.
When she was compelled to attend the hearing, she agreed to testify alongside several current and former executives of consumer crediting firm Equifax, which has also been tangled up in major cyber breaches.
A spokesperson for the Committee told ZDNet that it had, indeed, slapped Mayer with a subpoena. However, there are conflicting reports that suggest otherwise.
Speaking to The Hill, a representative for Mayer said she agreed to appear before the committee on a voluntary basis. Other reports suggest that she isn't the right person to discuss the IT security breaches at Yahoo.
And Mayer isn't the only US technology executive to face pressure from the government.
As data ages, its usefulness declines. All retained data is a liability for discovery, breach, theft or loss
Karen Zacharia, deputy general counsel and chief privacy officer at Verizon - the company that acquired Yahoo's consumer businesses - will also appear at the hearing.
Entrust Datacard boss Todd Wilkinson, former Equifax CEO Richard Smith, and interim Equifax CEO Paulino do Rego Barros have been summoned to attend, too.
People who fail to attend Congress hearings can be arrested by the authorities for contempt. They can face a fine of $1,000 and up to a year in federal prison. Such cases, however, are rare.
Yahoo has been plagued with two major cyber breaches over the past few months. In September 2016, the firm said 500 million records had been stolen, which experts said was the biggest case of this kind at the time.
But then it revealed a second case of data theft. Only this time, cyber criminals were able to get hold of one billion records, and just last month ago, it confirmed that all its three billion user accounts have been affected.
Richard Stiennon, chief strategy officer of Blancco Technology Group, commented on the breaches: "Yahoo claims that it works hard to keep its users' data safe, but evidently the tech giant's data retention policies leave much to be desired.
"I am continuously surprised and frustrated by the 'storage is cheap, keep everything' mentality. As data ages, its usefulness declines. All retained data is a liability for discovery, breach, theft or loss.
"When its value is less than the liability, it is time to permanently erase it so that it can never be recovered and result in a situation like the one Yahoo now finds itself in."
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