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Data Privacy Week is here, and there’s no better time to shine a spotlight on one of the biggest players in the personal information economy: data brokers. These entities collect, buy, and sell hundreds—sometimes thousands—of data points on individuals like you. But how do they manage to gather so much information, and for what purpose? From your browsing habits and purchase history to your location data and even more intimate details, these digital middlemen piece together surprisingly comprehensive profiles. The real question is: where are they getting it all, and why is your personal data so valuable to them? Let’s unravel the mystery behind the data broker industry.
Data brokers aggregate user info from various sources on the internet. They collect, collate, package, and sometimes even analyze this data to create a holistic and coherent version of you online. This data then gets put up for sale to nearly anyone who’ll buy it. That can include marketers, private investigators, tech companies, and sometimes law enforcement as well. They’ll also sell to spammers and scammers. (Those bad actors need to get your contact info from somewhere — data brokers are one way to get that and more.)
And that list of potential buyers goes on, which includes but isn’t limited to:
These companies and social media platforms use your data to better understand target demographics and the content with which they interact. While the practice isn’t unethical in and of itself (personalizing user experiences and creating more convenient UIs are usually cited as the primary reasons for it), it does make your data vulnerable to malicious attacks targeted toward big-tech servers.
Most of your online activities are related. Devices like your phone, laptop, tablets, and even fitness watches are linked to each other. Moreover, you might use one email ID for various accounts and subscriptions. This online interconnectedness makes it easier for data brokers to create a cohesive user profile.
Mobile phone apps are the most common way for data brokerage firms to collect your data. You might have countless apps for various purposes, such as financial transactions, health and fitness, or social media.
A number of these apps usually fall under the umbrella of the same or subsidiary family of apps, all of which work toward collecting and supplying data to big tech platforms. Programs like Google’s AdSense make it easier for developers to monetize their apps in exchange for the user information they collect.
Data brokers also collect data points like your home address, full name, phone number, and date of birth. They have automated scraping tools to quickly collect relevant information from public records (think sales of real estate, marriages, divorces, voter registration, and so on).
Lastly, data brokers can gather data from other third parties that track your cookies or even place trackers or cookies on your browsers. Cookies are small data files that track your online activities when visiting different websites. They track your IP address and browsing history, which third parties can exploit. Cookies are also the reason you see personalized ads and products.
Data brokers collate your private information into one package and sell it to “people search” websites. As mentioned above, practically anyone can access these websites and purchase extensive consumer data, for groups of people and individuals alike.
Next, marketing and sales firms are some of data brokers’ biggest clients. These companies purchase massive data sets from data brokers to research your data profile. They have advanced algorithms to segregate users into various consumer groups and target you specifically. Their predictive algorithms can suggest personalized ads and products to generate higher lead generation and conversation percentages for their clients.
We tend to accept the terms and conditions that various apps ask us to accept without thinking twice or reading the fine print. You probably cannot proceed without letting the app track certain data or giving your personal information. To a certain extent, we trade some of our privacy for convenience. This becomes public information, and apps and data brokers collect, track, and use our data however they please while still complying with the law.
There is no comprehensive privacy law in the U.S. on a federal level. This allows data brokers to collect personal information and condense it into marketing insights. While not all methods of gathering private data are legal, it is difficult to track the activities of data brokers online (especially on the dark web). As technology advances, there are also easier ways to harvest and exploit data.
As of March 2024, 15 states in the U.S. have data privacy laws in place. That includes California, Virginia, Connecticut, Colorado, Utah, Iowa, Indiana, Tennessee, Oregon, Montana, Texas, Delaware, Florida, New Jersey, and New Hampshire.[i] The laws vary by state, yet generally, they grant rights to individuals around the collection, use, and disclosure of their personal data by businesses.
However, these laws make exceptions for certain types of data and certain types of collectors. In short, these laws aren’t absolute.
Some data brokers let you remove your information from their websites. There are also extensive guides available online that list the method by which you can opt-out of some of the biggest data brokering firms. For example, a guide by Griffin Boyce, the systems administrator at Harvard University’s Berkman Klein Center for Internet and Society, provides detailed information on how to opt-out of a long list of data broker companies.
Yet the list of data brokers is long. Cleaning up your personal data online can quickly eat up your time, as it requires you to reach out to multiple data brokers and opt-out.
Rather than removing yourself one by one from the host of data broker sites out there, you have a solid option: our Personal Data Cleanup.
Personal Data Cleanup scans data broker sites and shows you which ones are selling your personal info. It also provides guidance on how you can remove your data from those sites. And if you want to save time on manually removing that info, you have options. Our McAfee+ Advanced and Ultimate plans come with full-service Personal Data Cleanup, which sends requests to remove your data automatically.
If the thought of your personal info getting bought and sold in such a public way bothers you, our Personal Data Cleanup can put you back in charge of it.
[i] https://pro.bloomberglaw.com/insights/privacy/state-privacy-legislation-tracker/
The post How Data Brokers Sell Your Identity appeared first on McAfee Blog.
Change Healthcare says it has notified approximately 100 million Americans that their personal, financial and healthcare records may have been stolen in a February 2024 ransomware attack that caused the largest ever known data breach of protected health information.
Image: Tamer Tuncay, Shutterstock.com.
A ransomware attack at Change Healthcare in the third week of February quickly spawned disruptions across the U.S. healthcare system that reverberated for months, thanks to the company’s central role in processing payments and prescriptions on behalf of thousands of organizations.
In April, Change estimated the breach would affect a “substantial proportion of people in America.” On Oct 22, the healthcare giant notified the U.S. Department of Health and Human Resources (HHS) that “approximately 100 million notices have been sent regarding this breach.”
A notification letter from Change Healthcare said the breach involved the theft of:
-Health Data: Medical record #s, doctors, diagnoses, medicines, test results, images, care and treatment;
-Billing Records: Records including payment cards, financial and banking records;
-Personal Data: Social Security number; driver’s license or state ID number;
-Insurance Data: Health plans/policies, insurance companies, member/group ID numbers, and Medicaid-Medicare-government payor ID numbers.
The HIPAA Journal reports that in the nine months ending on September 30, 2024, Change’s parent firm United Health Group had incurred $1.521 billion in direct breach response costs, and $2.457 billion in total cyberattack impacts.
Those costs include $22 million the company admitted to paying their extortionists — a ransomware group known as BlackCat and ALPHV — in exchange for a promise to destroy the stolen healthcare data.
That ransom payment went sideways when the affiliate who gave BlackCat access to Change’s network said the crime gang had cheated them out of their share of the ransom. The entire BlackCat ransomware operation shut down after that, absconding with all of the money still owed to affiliates who were hired to install their ransomware.
A breach notification from Change Healthcare.
A few days after BlackCat imploded, the same stolen healthcare data was offered for sale by a competing ransomware affiliate group called RansomHub.
“Affected insurance providers can contact us to prevent leaking of their own data and [remove it] from the sale,” RansomHub’s victim shaming blog announced on April 16. “Change Health and United Health processing of sensitive data for all of these companies is just something unbelievable. For most US individuals out there doubting us, we probably have your personal data.”
It remains unclear if RansomHub ever sold the stolen healthcare data. The chief information security officer for a large academic healthcare system affected by the breach told KrebsOnSecurity they participated in a call with the FBI and were told a third party partner managed to recover at least four terabytes of data that was exfiltrated from Change by the cybercriminal group. The FBI declined to comment.
Change Healthcare’s breach notification letter offers recipients two years of credit monitoring and identity theft protection services from a company called IDX. In the section of the missive titled “Why did this happen?,” Change shared only that “a cybercriminal accessed our computer system without our permission.”
But in June 2024 testimony to the Senate Finance Committee, it emerged that the intruders had stolen or purchased credentials for a Citrix portal used for remote access, and that no multi-factor authentication was required for that account.
Last month, Sens. Mark Warner (D-Va.) and Ron Wyden (D-Ore.) introduced a bill that would require HHS to develop and enforce a set of tough minimum cybersecurity standards for healthcare providers, health plans, clearinghouses and businesses associates. The measure also would remove the existing cap on fines under the Health Insurance Portability and Accountability Act, which severely limits the financial penalties HHS can issue against providers.
According to the HIPAA Journal, the biggest penalty imposed to date for a HIPAA violation was the paltry $16 million fine against the insurer Anthem Inc., which suffered a data breach in 2015 affecting 78.8 million individuals. Anthem reported revenues of around $80 billion in 2015.
A post about the Change breach from RansomHub on April 8, 2024. Image: Darkbeast, ke-la.com.
There is little that victims of this breach can do about the compromise of their healthcare records. However, because the data exposed includes more than enough information for identity thieves to do their thing, it would be prudent to place a security freeze on your credit file and on that of your family members if you haven’t already.
The best mechanism for preventing identity thieves from creating new accounts in your name is to freeze your credit file with Equifax, Experian, and TransUnion. This process is now free for all Americans, and simply blocks potential creditors from viewing your credit file. Parents and guardians can now also freeze the credit files for their children or dependents.
Since very few creditors are willing to grant new lines of credit without being able to determine how risky it is to do so, freezing your credit file with the Big Three is a great way to stymie all sorts of ID theft shenanigans. Having a freeze in place does nothing to prevent you from using existing lines of credit you may already have, such as credit cards, mortgage and bank accounts. When and if you ever do need to allow access to your credit file — such as when applying for a loan or new credit card — you will need to lift or temporarily thaw the freeze in advance with one or more of the bureaus.
All three bureaus allow users to place a freeze electronically after creating an account, but all of them try to steer consumers away from enacting a freeze. Instead, the bureaus are hoping consumers will opt for their confusingly named “credit lock” services, which accomplish the same result but allow the bureaus to continue selling access to your file to select partners.
If you haven’t done so in a while, now would be an excellent time to review your credit file for any mischief or errors. By law, everyone is entitled to one free credit report every 12 months from each of the three credit reporting agencies. But the Federal Trade Commission notes that the big three bureaus have permanently extended a program enacted in 2020 that lets you check your credit report at each of the agencies once a week for free.
One of the cybercrime underground’s more active sellers of Social Security numbers, background and credit reports has been pulling data from hacked accounts at the U.S. consumer data broker USinfoSearch, KrebsOnSecurity has learned.
Since at least February 2023, a service advertised on Telegram called USiSLookups has operated an automated bot that allows anyone to look up the SSN or background report on virtually any American. For prices ranging from $8 to $40 and payable via virtual currency, the bot will return detailed consumer background reports automatically in just a few moments.
USiSLookups is the project of a cybercriminal who uses the nicknames JackieChan/USInfoSearch, and the Telegram channel for this service features a small number of sample background reports, including that of President Joe Biden, and podcaster Joe Rogan. The data in those reports includes the subject’s date of birth, address, previous addresses, previous phone numbers and employers, known relatives and associates, and driver’s license information.
JackieChan’s service abuses the name and trademarks of Columbus, OH based data broker USinfoSearch, whose website says it provides “identity and background information to assist with risk management, fraud prevention, identity and age verification, skip tracing, and more.”
“We specialize in non-FCRA data from numerous proprietary sources to deliver the information you need, when you need it,” the company’s website explains. “Our services include API-based access for those integrating data into their product or application, as well as bulk and batch processing of records to suit every client.”
As luck would have it, my report was also listed in the Telegram channel for this identity fraud service, presumably as a teaser for would-be customers. On October 19, 2023, KrebsOnSecurity shared a copy of this file with the real USinfoSearch, along with a request for information about the provenance of the data.
USinfoSearch said it would investigate the report, which appears to have been obtained on or before June 30, 2023. On Nov. 9, 2023, Scott Hostettler, general manager of USinfoSearch parent Martin Data LLC shared a written statement about their investigation that suggested the ID theft service was trying to pass off someone else’s consumer data as coming from USinfoSearch:
Regarding the Telegram incident, we understand the importance of protecting sensitive information and upholding the trust of our users is our top priority. Any allegation that we have provided data to criminals is in direct opposition to our fundamental principles and the protective measures we have established and continually monitor to prevent any unauthorized disclosure. Because Martin Data has a reputation for high-quality data, thieves may steal data from other sources and then disguise it as ours. While we implement appropriate safeguards to guarantee that our data is only accessible by those who are legally permitted, unauthorized parties will continue to try to access our data. Thankfully, the requirements needed to pass our credentialing process is tough even for established honest companies.
USinfoSearch’s statement did not address any questions put to the company, such as whether it requires multi-factor authentication for customer accounts, or whether my report had actually come from USinfoSearch’s systems.
After much badgering, on Nov. 21 Hostettler acknowledged that the USinfoSearch identity fraud service on Telegram was in fact pulling data from an account belonging to a vetted USinfoSearch client.
“I do know 100% that my company did not give access to the group who created the bots, but they did gain access to a client,” Hostettler said of the Telegram-based identity fraud service. “I apologize for any inconvenience this has caused.”
Hostettler said USinfoSearch heavily vets any new potential clients, and that all users are required to undergo a background check and provide certain documents. Even so, he said, several fraudsters each month present themselves as credible business owners or C-level executives during the credentialing process, completing the application and providing the necessary documentation to open a new account.
“The level of skill and craftsmanship demonstrated in the creation of these supporting documents is incredible,” Hostettler said. “The numerous licenses provided appear to be exact replicas of the original document. Fortunately, I’ve discovered several methods of verification that do not rely solely on those documents to catch the fraudsters.”
“These people are unrelenting, and they act without regard for the consequences,” Hostettler continued. “After I deny their access, they will contact us again within the week using the same credentials. In the past, I’ve notified both the individual whose identity is being used fraudulently and the local police. Both are hesitant to act because nothing can be done to the offender if they are not apprehended. That is where most attention is needed.”
JackieChan is most active on Telegram channels focused on “SIM swapping,” which involves bribing or tricking mobile phone company employees into redirecting a target’s phone number to a device the attackers control. SIM swapping allows crooks to temporarily intercept the target’s text messages and phone calls, including any links or one-time codes for authentication that are delivered via SMS.
Reached on Telegram, JackieChan said most of his clients hail from the criminal SIM swapping world, and that the bulk of his customers use his service via an application programming interface (API) that allows customers to integrate the lookup service with other web-based services, databases, or applications.
“Sim channels is where I get most of my customers,” JackieChan told KrebsOnSecurity. “I’m averaging around 100 lookups per day on the [Telegram] bot, and around 400 per day on the API.”
JackieChan claims his USinfoSearch bot on Telegram abuses stolen credentials needed to access an API used by the real USinfoSearch, and that his service was powered by USinfoSearch account credentials that were stolen by malicious software tied to a botnet that he claims to have operated for some time.
This is not the first time USinfoSearch has had trouble with identity thieves masquerading as legitimate customers. In 2013, KrebsOnSecurity broke the news that an identity fraud service in the underground called “SuperGet[.]info” was reselling access to personal and financial data on more than 200 million Americans that was obtained via the big-three credit bureau Experian.
The consumer data resold by Superget was not obtained directly from Experian, but rather via USinfoSearch. At the time, USinfoSearch had a contractual agreement with a California company named Court Ventures, whereby customers of Court Ventures had access to the USinfoSearch data, and vice versa.
When Court Ventures was purchased by Experian in 2012, the proprietor of SuperGet — a Vietnamese hacker named Hieu Minh Ngo who had impersonated an American private investigator — was grandfathered in as a client. The U.S. Secret Service agent who oversaw Ngo’s capture, extradition, prosecution and rehabilitation told KrebsOnSecurity he’s unaware of any other cybercriminal who has caused more material financial harm to more Americans than Ngo.
JackieChan also sells access to hacked email accounts belonging to law enforcement personnel in the United States and abroad. Hacked police department emails can come in handy for ID thieves trying to pose as law enforcement officials who wish to purchase consumer data from platforms like USinfoSearch. Hence, Mr. Hostettler’s ongoing battle with fraudsters seeking access to his company’s service.
These police credentials are mainly marketed to criminals seeking fraudulent “Emergency Data Requests,” wherein crooks use compromised government and police department email accounts to rapidly obtain customer account data from mobile providers, ISPs and social media companies.
Normally, these companies will require law enforcement officials to supply a subpoena before turning over customer or user records. But EDRs allow police to bypass that process by attesting that the information sought is related to an urgent matter of life and death, such as an impending suicide or terrorist attack.
In response to an alarming increase in the volume of fraudulent EDRs, many service providers have chosen to require all EDRs be processed through a service called Kodex, which seeks to filter EDRs based on the reputation of the law enforcement entity requesting the information, and other attributes of the requestor.
For example, if you want to send an EDR to Coinbase or Twilio, you’ll first need to have valid law enforcement credentials and create an account at the Kodex online portal at these companies. However, Kodex may still throttle or block any requests from any accounts if they set off certain red flags.
Within their own separate Kodex portals, Twilio can’t see requests submitted to Coinbase, or vice versa. But each can see if a law enforcement entity or individual tied to one of their own requests has ever submitted a request to a different Kodex client, and then drill down further into other data about the submitter, such as Internet address(es) used, and the age of the requestor’s email address.
In August, JackieChan was advertising a working Kodex account for sale on the cybercrime channels, including redacted screenshots of the Kodex account dashboard as proof of access.
Kodex co-founder Matt Donahue told KrebsOnSecurity his company immediately detected that the law enforcement email address used to create the Kodex account pictured in JackieChan’s ad was likely stolen from a police officer in India. One big tipoff, Donahue said, was that the person creating the account did so using an Internet address in Brazil.
“There’s a lot of friction we can put in the way for illegitimate actors,” Donahue said. “We don’t let people use VPNs. In this case we let them in to honeypot them, and that’s how they got that screenshot. But nothing was allowed to be transmitted out from that account.”
Massive amounts of data about you and your personal history are available from USinfoSearch and dozens of other data brokers that acquire and sell “non-FCRA” data — i.e., consumer data that cannot be used for the purposes of determining one’s eligibility for credit, insurance, or employment.
Anyone who works in or adjacent to law enforcement is eligible to apply for access to these data brokers, which often market themselves to police departments and to “skip tracers,” essentially bounty hunters hired to locate others in real life — often on behalf of debt collectors, process servers or a bail bondsman.
There are tens of thousands of police jurisdictions around the world — including roughly 18,000 in the United States alone. And the harsh reality is that all it takes for hackers to apply for access to data brokers (and abuse the EDR process) is illicit access to a single police email account.
The trouble is, compromised credentials to law enforcement email accounts show up for sale with alarming frequency on the Telegram channels where JackieChan and their many clients reside. Indeed, Donahue said Kodex so far this year has identified attempted fake EDRs coming from compromised email accounts for police departments in India, Italy, Thailand and Turkey.
In the summer of 2022, KrebsOnSecurity documented the plight of several readers who had their accounts at big-three consumer credit reporting bureau Experian hijacked after identity thieves simply re-registered the accounts using a different email address. Sixteen months later, Experian clearly has not addressed this gaping lack of security. I know that because my account at Experian was recently hacked, and the only way I could recover access was by recreating the account.
Entering my SSN and birthday at Experian showed my identity was tied to an email address I did not authorize.
I recently ordered a copy of my credit file from Experian via annualcreditreport.com, but as usual Experian declined to provide it, saying they couldn’t verify my identity. Attempts to log in to my account directly at Experian.com also failed; the site said it didn’t recognize my username and/or password.
A request for my Experian account username required my full Social Security number and date of birth, after which the website displayed portions of an email address I never authorized and did not recognize (the full address was redacted by Experian).
I immediately suspected that Experian was still allowing anyone to recreate their credit file account using the same personal information but a different email address, a major authentication failure that was explored in last year’s story, Experian, You Have Some Explaining to Do. So once again I sought to re-register as myself at Experian.
The homepage said I needed to provide a Social Security number and mobile phone number, and that I’d soon receive a link that I should click to verify myself. The site claims that the phone number you provide will be used to help validate your identity. But it appears you could supply any phone number in the United States at this stage in the process, and Experian’s website would not balk. Regardless, users can simply skip this step by selecting the option to “Continue another way.”
Experian then asks for your full name, address, date of birth, Social Security number, email address and chosen password. After that, they require you to successfully answer between three to five multiple-choice security questions whose answers are very often based on public records. When I recreated my account this week, only two of the five questions pertained to my real information, and both of those questions concerned street addresses we’ve previously lived at — information that is just a Google search away.
Assuming you sail through the multiple-choice questions, you’re prompted to create a 4-digit PIN and provide an answer to one of several pre-selected challenge questions. After that, your new account is created and you’re directed to the Experian dashboard, which allows you to view your full credit file, and freeze or unfreeze it.
At this point, Experian will send a message to the old email address tied to the account, saying certain aspects of the user profile have changed. But this message isn’t a request seeking verification: It’s just a notification from Experian that the account’s user data has changed, and the original user is offered zero recourse here other than to a click a link to log in at Experian.com.
If you don’t have an Experian account, it’s a good idea to create one. Because at least then you will receive one of these emails when someone hijacks your credit file at Experian.
And of course, a user who receives one of these notices will find that the credentials to their Experian account no longer work. Nor do their PIN or account recovery question, because those have been changed also. Your only option at this point is recreate your account at Experian and steal it back from the ID thieves!
In contrast, if you try to modify an existing account at either of the other two major consumer credit reporting bureaus — Equifax or TransUnion — they will ask you to enter a code sent to the email address or phone number on file before any changes can be made.
Reached for comment, Experian declined to share the full email address that was added without authorization to my credit file.
“To ensure the protection of consumers’ identities and information, we have implemented a multi-layered security approach, which includes passive and active measures, and are constantly evolving,” Experian spokesperson Scott Anderson said in an emailed statement. “This includes knowledge-based questions and answers, and device possession and ownership verification processes.”
Anderson said all consumers have the option to activate a multi-factor authentication method that’s requested each time they log in to their account. But what good is multi-factor authentication if someone can simply recreate your account with a new phone number and email address?
Several readers who spotted my rant about Experian on Mastodon earlier this week responded to a request to validate my findings. The Mastodon user @Jackerbee is a reader from Michican who works in the biotechnology industry. @Jackerbee said when prompted by Experian to provide his phone number and the last four digits of his SSN, he chose the option to “manually enter my information.”
“I put my second phone number and the new email address,” he explained. “I received a single email in my original account inbox that said they’ve updated my information after I ‘signed up.’ No verification required from the original email address at any point. I also did not receive any text alerts at the original phone number. The especially interesting and egregious part is that when I sign in, it does 2FA with the new phone number.”
The Mastodon user PeteMayo said they recreated their Experian account twice this week, the second time by supplying a random landline number.
“The only difference: it asked me FIVE questions about my personal history (last time it only asked three) before proclaiming, ‘Welcome back, Pete!,’ and granting full access,” @PeteMayo wrote. “I feel silly saving my password for Experian; may as well just make a new account every time.”
I was fortunate in that whoever hijacked my account did not also thaw my credit freeze. Or if they did, they politely froze it again when they were done. But I fully expect my Experian account will be hijacked yet again unless Experian makes some important changes to its authentication process.
It boggles the mind that these fundamental authentication weaknesses have been allowed to persist for so long at Experian, which already has a horrible track record in this regard.
In December 2022, KrebsOnSecurity alerted Experian that identity thieves had worked out a remarkably simple way to bypass its security and access any consumer’s full credit report — armed with nothing more than a person’s name, address, date of birth, and Social Security number. Experian fixed the glitch, and acknowledged that it persisted for nearly seven weeks, between Nov. 9, 2022 and Dec. 26, 2022.
In April 2021, KrebsOnSecurity revealed how identity thieves were exploiting lax authentication on Experian’s PIN retrieval page to unfreeze consumer credit files. In those cases, Experian failed to send any notice via email when a freeze PIN was retrieved, nor did it require the PIN to be sent to an email address already associated with the consumer’s account.
A few days after that April 2021 story, KrebsOnSecurity broke the news that an Experian API was exposing the credit scores of most Americans.
More greatest hits from Experian:
2022: Class Action Targets Experian Over Account Security
2017: Experian Site Can Give Anyone Your Credit Freeze PIN
2015: Experian Breach Affects 15 Million Customers
2015: Experian Breach Tied to NY-NJ ID Theft Ring
2015: At Experian, Security Attrition Amid Acquisitions
2015: Experian Hit With Class Action Over ID Theft Service
2014: Experian Lapse Allowed ID Theft Service Access to 200 Million Consumer Records
2013: Experian Sold Consumer Data to ID Theft Service
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