Among the 143 million Americans potentially affected by Equifax Inc.’s breach, some might find a tiny bit of solace in how the credit-reporting company’s shares have cratered.

Equifax’s stock EFX, -2.03% has tumbled to $98.99 as of Wednesday’s close, a drop of 31% from its Sept. 7 finish at $142.72. The company disclosed the massive breach after the closing bell on that day.

The selling has wiped $5.3 billon off Equifax’s market capitalization, leaving it valued at $11.9 billion at end of trading Wednesday, down from $17.2 billon on Sept. 7.

Shares dived 14% on Sept. 8 (last Friday), then tumbled 8% on Monday. They rallied 2.5% on Tuesday, but resumed their plunge on Wednesday, falling 15%.

The big drop looks set to continue Thursday. In premarket action, the stock was down 2%.

Read more:Equifax’s data breach costs investors a lot more than it will cost the company

And see:Equifax execs sold shares after breach, before informing public

Equifax’s stock did manage to rally a little Tuesday.

The latest headlines around the breach have touched on Equifax confirming that hackers exploited a vulnerability with a U.S. website application called Apache Struts CVE-2017-5638.

The security hole was disclosed by the Struts project in March, along with “clear and simple” instructions on how to fix it, Oege de Moor, CEO of software analytics provider Semmle, told The Financial Times.

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And read: Equifax could pay for data breach in court

Equifax also has been accused of a fresh data security breach affecting its business in Argentina, a BBC report has noted. Cyber-crime blogger Brian Krebs has said an online employee tool used in that nation could be accessed by entering “admin” as both a login and password.

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