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A cybersecurity firm says it has intercepted a large, unique stolen data set containing the names, addresses, email addresses, phone numbers, Social Security Numbers and dates of birth on nearly 23 million Americans. The firm’s analysis of the data suggests it corresponds to current and former customers of AT&T. The telecommunications giant stopped short of saying the data wasn’t theirs, but it maintains the records do not appear to have come from its systems and may be tied to a previous data incident at another company.
Milwaukee-based cybersecurity consultancy Hold Security said it intercepted a 1.6 gigabyte compressed file on a popular dark web file-sharing site. The largest item in the archive is a 3.6 gigabyte file called “dbfull,” and it contains 28.5 million records, including 22.8 million unique email addresses and 23 million unique SSNs. There are no passwords in the database.
Hold Security founder Alex Holden said a number of patterns in the data suggest it relates to AT&T customers. For starters, email addresses ending in “att.net” accounted for 13.7 percent of all addresses in the database, with addresses from SBCGLobal.net and Bellsouth.net — both AT&T companies — making up another seven percent. In contrast, Gmail users made up more than 30 percent of the data set, with Yahoo addresses accounting for 24 percent. More than 10,000 entries in the database list “none@att.com” in the email field.
Hold Security found these email domains account for 87% of all domains in the data set. Nearly 21% belonged to AT&T customers.
Holden’s team also examined the number of email records that included an alias in the username portion of the email, and found 293 email addresses with plus addressing. Of those, 232 included an alias that indicated the customer had signed up at some AT&T property; 190 of the aliased email addresses were “+att@”; 42 were “+uverse@,” an oddly specific reference to an AT&T entity that included broadband Internet. In September 2016, AT&T rebranded U-verse as AT&T Internet.
According to its website, AT&T Internet is offered in 21 states, including Alabama, Arkansas, California, Florida, Georgia, Indiana, Kansas, Kentucky, Louisiana, Michigan, Missouri, Nevada, North Carolina, Ohio, Oklahoma, Tennessee, Texas and Wisconsin. Nearly all of the records in the database that contain a state designation corresponded to those 21 states; all other states made up just 1.64 percent of the records, Hold Security found.
Image: Hold Security.
The vast majority of records in this database belong to consumers, but almost 13,000 of the entries are for corporate entities. Holden said 387 of those corporate names started with “ATT,” with various entries like “ATT PVT XLOW” appearing 81 times. And most of the addresses for these entities are AT&T corporate offices.
How old is this data? One clue may be in the dates of birth exposed in this database. There are very few records in this file with dates of birth after 2000.
“Based on these statistics, we see that the last significant number of subscribers born in March of 2000,” Holden told KrebsOnSecurity, noting that AT&T requires new account holders to be 18 years of age or older. “Therefore, it makes sense that the dataset was likely created close to March of 2018.”
There was also this anomaly: Holden said one of his analysts is an AT&T customer with a 13-letter last name, and that her AT&T bill has always had the same unique misspelling of her surname (they added yet another letter). He said the analyst’s name is identically misspelled in this database.
KrebsOnSecurity shared the large data set with AT&T, as well as Hold Security’s analysis of it. AT&T ultimately declined to say whether all of the people in the database are or were at some point AT&T customers. The company said the data appears to be several years old, and that “it’s not immediately possible to determine the percentage that may be customers.”
“This information does not appear to have come from our systems,” AT&T said in a written statement. “It may be tied to a previous data incident at another company. It is unfortunate that data can continue to surface over several years on the dark web. However, customers often receive notices after such incidents, and advice for ID theft is consistent and can be found online.”
The company declined to elaborate on what they meant by “a previous data incident at another company.”
But it seems likely that this database is related to one that went up for sale on a hacker forum on August 19, 2021. That auction ran with the title “AT&T Database +70M (SSN/DOB),” and was offered by ShinyHunters, a well-known threat actor with a long history of compromising websites and developer repositories to steal credentials or API keys.
Image: BleepingComputer
ShinyHunters established the starting price for the auction at $200,000, but set the “flash” or “buy it now” price at $1 million. The auction also included a small sampling of the stolen information, but that sample is no longer available. The hacker forum where the ShinyHunters sales thread existed was seized by the FBI in April, and its alleged administrator arrested.
But cached copies of the auction, as recorded by cyber intelligence firm Intel 471, show ShinyHunters received bids of up to $230,000 for the entire database before they suspended the sale.
“This thread has been deleted several times,” ShinyHunters wrote in their auction discussion on Sept. 6, 2021. “Therefore, the auction is suspended. AT&T will be available on WHM as soon as they accept new vendors.”
The WHM initialism was a reference to the White House Market, a dark web marketplace that shut down in October 2021.
“In many cases, when a database is not sold, ShinyHunters will release it for free on hacker forums,” wrote BleepingComputer’s Lawrence Abrams, who broke the news of the auction last year and confronted AT&T about the hackers’ claims.
AT&T gave Abrams a similar statement, saying the data didn’t come from their systems.
“When asked whether the data may have come from a third-party partner, AT&T chose not to speculate,” Abrams wrote. “‘Given this information did not come from us, we can’t speculate on where it came from or whether it is valid,'” AT&T told BleepingComputer.
Asked to respond to AT&T’s denial, ShinyHunters told BleepingComputer at the time, “I don’t care if they don’t admit. I’m just selling.”
On June 1, 2022, a 21-year-old Frenchman was arrested in Morocco for allegedly being a member of ShinyHunters. Databreaches.net reports the defendant was arrested on an Interpol “Red Notice” at the request of a U.S. federal prosecutor from Washington state.
Databreaches.net suggests the warrant could be tied to a ShinyHunters theft in May 2020, when the group announced they had exfiltrated 500 GB of Microsoft’s source code from Microsoft’s private GitHub repositories.
“Researchers assess that Shiny Hunters gained access to roughly 1,200 private repositories around March 28, 2020, which have since been secured,” reads a May 2020 alert posted by the New Jersey Cybersecurity & Communications Integration Cell, a component within the New Jersey Office of Homeland Security and Preparedness.
“Though the breach was largely dismissed as insignificant, some images of the directory listing appear to contain source code for Azure, Office, and some Windows runtimes, and concerns have been raised regarding access to private API keys or passwords that may have been mistakenly included in some private repositories,” the alert continues. “Additionally, Shiny Hunters is flooding dark web marketplaces with breached databases.”
Last month, T-Mobile agreed to pay $350 million to settle a consolidated class action lawsuit over a breach in 2021 that affected 40 million current and former customers. The breach came to light on Aug. 16, 2021, when someone starting selling tens of millions of SSN/DOB records from T-Mobile on the same hacker forum where the ShinyHunters would post their auction for the claimed AT&T database just three days later.
T-Mobile has not disclosed many details about the “how” of last year’s breach, but it said the intruder(s) “leveraged their knowledge of technical systems, along with specialized tools and capabilities, to gain access to our testing environments and then used brute force attacks and other methods to make their way into other IT servers that included customer data.”
A sales thread tied to the stolen T-Mobile customer data.
Did you just get word that your personal information may have been caught up in a data breach? If so, you can take steps to protect yourself from harm should your info get into the hands of a scammer or thief.
How does that information get collected in the first place? We share personal information with companies for multiple reasons simply by going about our day—to pay for takeout at our favorite restaurant, to check into a hotel, or to collect rewards at the local coffee shop. Of course, we use our credit and debit cards too, sometimes as part of an online account that tracks our purchase history.
In other words, we leave trails of data practically wherever we go these days, and that data is of high value to hackers. Thus, all those breaches we read about.
Whether it’s a major breach that exposes millions of records or one of many other smaller-scale breaches like the thousands that have struck healthcare providers, each one serves as a reminder that data breaches happen regularly and that we could find ourselves affected. Depending on the breach and the kind of information you’ve shared with the business or organization in question, information stolen in a breach could include:
What do crooks do with that data? Several things. Apart from using it themselves, they may sell that data to other criminals. Either way, this can lead to illicit use of credit and debit cards, draining of bank accounts, claiming tax refunds or medical expenses in the names of the victims, or, in extreme cases, assuming the identity of others altogether.
In all, data is a kind of currency in of itself because it has the potential to unlock several aspects of victim’s life, each with its own monetary value. It’s no wonder that big breaches like these have made the news over the years, with some of the notables including:
As mentioned, these are big breaches with big companies that we likely more than recognize. Yet smaller and mid-sized businesses are targets as well, with some 43% of data breaches involving companies of that size. Likewise, restaurants and retailers have seen their Point-of-Sale (POS) terminals compromised, right on down to neighborhood restaurants.
When a company experiences a data breach, customers need to realize that this could impact their online safety. If your favorite coffee shop’s customer database gets leaked, there’s a chance that your personal or financial information was exposed. However, this doesn’t mean that your online safety is doomed. If you think you were affected by a breach, you can take several steps to protect yourself from the potential side effects.
One of the most effective ways to determine whether someone is fraudulently using one or more of your accounts is to check your statements. If you see any charges that you did not make, report them to your bank or credit card company immediately. They have processes in place to handle fraud. While you’re with them, see if they offer alerts for strange purchases, transactions, or withdrawals.
Our credit monitoring service can help you keep an eye on this. It monitors changes to your credit score, report, and accounts with timely notifications and guidance so you can take action to tackle identity theft.
Breached and stolen information often ends up in dark web marketplaces where hackers, scammers, and thieves purchase it to commit yet more crime. Once it was difficult to know if your information was caught up in such marketplaces, yet now an identity monitoring service can do the detective work for you.
Our service monitors the dark web for your personal info, including email, government IDs, credit card and bank account info, and more. This can help keep your personal info safe with early alerts that show you if your data is found on the dark web, an average of 10 months ahead of similar services. From there, you’ll get guidance that you can act on, which can help protect your info and accounts from theft.
If you suspect that your data might have been compromised, place a fraud alert on your credit. This not only ensures that any new or recent requests undergo scrutiny, but also allows you to have extra copies of your credit report so you can check for suspicious activity. You can place one fraud alert with any of the three major credit reporting agencies (Equifax, Experian, TransUnion) and they will notify the other two. A fraud alert typically lasts for a year, although there are options for extending it as well.
Freezing your credit will make it highly difficult for criminals to take out loans or open new accounts in your name, as a freeze halts all requests to pull your credit—even legitimate ones. In this way, it’s a far stronger measure than placing a fraud alert. Note that if you plan to take out a loan, open a new credit card, or other activity that will prompt a credit report, you’ll need to take extra steps to see that through while the freeze is in place. (The organization you’re working with can assist with the specifics.) Unlike the fraud alert, you’ll need to contact each major credit reporting agency to put one in place. Also, a freeze lasts as long as you have it in place. You’ll have to remove it yourself, again with each agency.
You can centrally manage this process with our security freeze service, which stops companies from looking at your credit profile, and thus halts the application process for loans, credit cards, utilities, new bank accounts, and more. A security freeze won’t affect your credit score.
Ensure that your passwords are strong and unique. Many people utilize the same password or variations of it across all their accounts. Therefore, be sure to diversify your passcodes to ensure hackers cannot obtain access to all your accounts at once, should one password be compromised. You can also employ a password manager to keep track of your credentials, such as the one you’ll find in comprehensive online protection software.
If the unfortunate happens to you, an identity theft coverage & restoration service can help you get back on your feet. Ours offers $1 million in coverage for lawyer fees, travel expenses, and stolen funds reimbursement. It further provides support from a licensed recovery expert who can take the needed steps to repair your identity and credit. In all, it helps you recover the costs of identity theft along with the time and money it takes to recover from it.
You can take this step any time, even if you haven’t been caught up in a data breach. The fact is that data broker companies collect and sell thousands of pieces of information on millions and millions of people worldwide, part of a global economy estimated at $200 billion U.S. dollars a year. And they’ll sell it to anyone—from advertisers for their campaigns, to scammers who will use it for spammy emails, texts, and calls, and to thieves who use that information for identity theft.
Yet you can clean it up. Our personal data cleanup service can scan some of the riskiest data broker sites and show you which ones are selling your personal info. It also provides guidance on how you can remove your data from those sites and, with select products, even manage the removal for you.
Comprehensive online protection software will offer you the tools and services listed above, along with further features that can protect you online. That includes a VPN to keep your time online more private from online data collection while protecting it from thieves who’re out to steal credit card and account information. It also includes web browsing protection that can warn you of sketchy websites and malicious downloads that look to steal your information. In all, it’s thorough protection for your devices, privacy, and identity. And in a time of data breaches, that kind of protection has become essential.
The post How to Protect Yourself From Identity Theft After a Data Breach appeared first on McAfee Blog.
How does that information get collected in the first place? We share personal information with companies for multiple reasons simply by going about our day—to pay for takeout at our favorite restaurant, to check into a hotel, or to collect rewards at the local coffee shop. Of course, we use our credit and debit cards too, sometimes as part of an online account that tracks our purchase history.
In other words, we leave trails of data practically wherever we go these days, and that data is of high value to hackers. Thus, all those breaches we read about.
Whether it’s a major breach that exposes millions of records or one of many other smaller-scale breaches like the thousands that have struck healthcare providers, each one serves as a reminder that data breaches happen regularly and that we could find ourselves affected. Depending on the breach and the kind of information you’ve shared with the business or organization in question, information stolen in a breach could include:
What do crooks do with that data? Several things. Apart from using it themselves, they may sell that data to other criminals. Either way, this can lead to illicit use of credit and debit cards, draining of bank accounts, claiming tax refunds or medical expenses in the names of the victims, or, in extreme cases, assuming the identity of others altogether.
In all, data is a kind of currency in of itself because it has the potential to unlock several aspects of victim’s life, each with its own monetary value. It’s no wonder that big breaches like these have made the news over the years, with some of the notables including:
Facebook – 2019: Two sets of data exposed the records of more than 530 million users, including phone numbers, account names, and Facebook IDs.
Marriott International (Starwood) – 2018: Half a million guests had names, email and physical mailing addresses, phone numbers, passport numbers, Starwood Preferred Guest account information, dates of birth, and other information about their stays exposed.
Equifax – 2017: Some 147 million records that included names, addresses, dates of birth, driver’s license numbers, and Social Security Numbers were exposed, along with a relatively small subset of 200,000 victims having their credit card information exposed as well.
As mentioned, these are big breaches with big companies that we likely more than recognize. Yet smaller and mid-sized businesses are targets as well, with some 43% of data breaches involving companies of that size. Likewise, restaurants and retailers have seen their Point-of-Sale (POS) terminals compromised, right on down to neighborhood restaurants.
When a company experiences a data breach, customers need to realize that this could impact their online safety. If your favorite coffee shop’s customer database gets leaked, there’s a chance that your personal or financial information was exposed. However, this doesn’t mean that your online safety is doomed. If you think you were affected by a breach, there are multiple steps you can take to help protect yourself from the potential side effects.
One of the most effective ways to determine whether someone is fraudulently using one or more of your accounts is to check your statements. If you see any charges that you did not make, report them to your bank or credit card company immediately. They have processes in place to handle fraud. While you’re with them, see if they offer alerts for strange purchases, transactions, or withdrawals.
File a police report and a Federal Trade Commission (FTC) Identity Theft Report. This will help in case someone uses your Social Security number to commit fraud, since it will provide a legal record of the theft. The FTC can also assist by guiding you through the identity theft recovery process as well. Their site offers a step-by-step recovery plan that you can follow and track your progress as you go.
If you suspect that your data might have been compromised, place a fraud alert on your credit. This not only ensures that any new or recent requests undergo scrutiny, but also allows you to have extra copies of your credit report so you can check for suspicious activity. You can place one fraud alert with any of the three major credit reporting agencies (Equifax, Experian, TransUnion) and they will notify the other two. A fraud alert typically lasts for a year, although there are options for extending it as well.
Freezing your credit will make it highly difficult for criminals to take out loans or open new accounts in your name, as a freeze halts all requests to pull your credit—even legitimate ones. In this way, it’s a far stronger measure than placing a fraud alert. Note that if you plan to take out a loan, open a new credit card, or other activity that will prompt a credit report, you’ll need to take extra steps to see that through while the freeze is in place. (The organization you’re working with can assist with the specifics.) Unlike the fraud alert, you’ll need to contact each major credit reporting agency to put one in place. Also, a freeze lasts as long as you have it in place. You’ll have to remove it yourself, again with each agency.
Ensure that your passwords are strong and unique. Many people utilize the same password or variations of it across all their accounts. Therefore, be sure to diversify your passcodes to ensure hackers cannot obtain access to all your accounts at once, should one password be compromised. You can also employ a password manager to keep track of your credentials, such as one you’ll find in comprehensive online protection software.
A solution such as this will help you to monitor your accounts and alert you of any suspicious activity. Specifically, our own Identity Protection Service will monitor several types of personally identifiable information, alert you of potentially stolen personal info, and offer guided help to neutralize the threat. Also, it can help you steer clear of some types of theft with preventative guidance that can help keep theft from happening in the first place. With this set up on your computers and smartphone you can stay in the know and address issues immediately.
To use your credit card safely online to make purchases, add both a VPN and password manager into your toolbox of security solutions. A VPN keeps your shopping experience private, while a password manager helps you keep track of and protect all your online accounts. Again, you’ll find a VPN as part of comprehensive online protection software.
The post Affected by a Data Breach? Here Are Security Steps You Should Take appeared first on McAfee Blogs.
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