When Yahoo first disclosed a massive 2013 breach last year, it said 1 billion accounts appeared to have been compromised. But the search giant, now owned by Verizon, says "new intelligence" has revealed that the breach compromised every single Yahoo account, affecting 3 billion users in total.
At the first of three Congressional hearings slated this week to examine the Equifax mega-breach, one Republican said of the company's delay in detecting the breach: "It's like the guards of Fort Knox forgot to lock the doors and failed to notice the thieves were emptying the vaults."
Credit-reporting agency Equifax says its massive breach was even worse than it suspected, affecting 145.5 million U.S. consumers. But it revised the number of suspected Canadian victims from 100,000 down to 8,000, yet says it's discovered that some also had payment card data compromised.
The latest edition of the ISMG Security Report is devoted to a special report on how enterprises around the world should prepare for the European Union's General Data Protection Regulation, which starts being enforced in May.
Former Equifax CEO Richard Smith this week heads to Capitol Hill to testify about the massive breach suffered by the credit bureau. Lawmakers will likely focus on breach detection and response, information security practices and the suspicious timing of three executives' stock sales.
Upscale supermarket chain Whole Foods Market says it's investigating a payment card breach affecting dozens of taprooms and an unspecific number of restaurants located inside its stores. But it says no point-of-sale systems at checkout lanes were compromised.
Fast-food chain Sonic Drive-In is investigating a potential breach involving customers' payment card data. Its alert follows a large, potentially related batch of stolen card data appearing for sale on a cybercrime "carder" marketplace called "Joker's Stash."
"Big four" accounting firm Deloitte suffered a breach last year that may have exposed 5 million internal emails as well as usernames and passwords, client information and health details, the Guardian reports.
The chairman of the U.S. Securities and Exchange Commission will face the Senate Banking Committee next week following the agency's belated disclosure that in May 2016, hackers stole secret market data from the SEC's systems and apparently used it for "illicit gain through trading."
Analyzing the impact of a breach of computers at the U.S. Securities and Exchange Commission leads the latest edition of the ISMG Security Report. Also, exploring alternative plans to implement cybersecurity regulations on credit reporting bureaus in the wake of the Equifax breach.
Hackers behind the mega-breach at Equifax stole data in May, but they - or other attackers - penetrated the credit bureau's systems in March, exploiting a vulnerability for which Apache Struts had issued a patch, just four days prior.
Equifax is disputing Bloomberg's report that it suffered an undisclosed data breach, discovered in March, that predates the massive breach that began in May. Instead, Equifax says the March incident involved its payroll service and that it notified all victims and required regulators.
Equifax made an error that led to one of the largest and most sensitive data breaches of all time, and the mistake was elementary: The credit bureau failed to patch a vulnerability in Apache Struts - a web application development framework - in a timely manner.