A ransomware assault earlier this yr on UnitedHealth-owned well being tech firm Change Healthcare doubtless stands as one of many largest information breaches of U.S. well being and medical information in historical past.
Months after the February information breach, a “substantial proportion of people living in America” are receiving discover by mail that their private and well being data was stolen by cybercriminals throughout the cyberattack on Change Healthcare.
Change Healthcare processes billing and insurance coverage for a whole bunch of 1000’s of hospitals, pharmacies and medical practices throughout the U.S. healthcare sector. As such, it collects and shops huge quantities of extremely delicate medical information on sufferers in the US. By a collection of mergers and acquisitions, Change turned one of many largest processors of U.S. well being information, dealing with between one-third and one-half of all U.S. well being transactions.
Right here’s what has occurred for the reason that ransomware assault started.
February 21, 2024
First report of outages as safety incident emerges
It appeared like an unusual Wednesday afternoon, till it wasn’t. The outage was sudden. On February 21, billing programs at docs workplaces and healthcare practices stopped working, and insurance coverage claims stopped processing. The standing web page on Change Healthcare’s web site was flooded with outage notifications affecting each a part of its enterprise, and later that day the corporate confirmed it was “experiencing a network interruption related to a cyber security issue.” Clearly one thing had gone very unsuitable.
It seems that Change Healthcare invoked its safety protocols and shut down its total community to isolate intruders it present in its programs. That meant sudden and widespread outages throughout the healthcare sector that depends on a handful of corporations — like Change Healthcare — to deal with healthcare insurance coverage and billing claims for huge swathes of the US. It was later decided that the hackers initially broke into the corporate’s programs over per week earlier, on or round February 12.
February 29, 2024
UnitedHealth confirms it was hit by ransomware gang
After initially (and incorrectly) attributing the intrusion to hackers working for a authorities or nation-state, UnitedHealth later mentioned on February 29 that the cyberattack was in truth the work of a ransomware gang. UnitedHealth mentioned the gang “represented itself to us as ALPHV/BlackCat,” an organization spokesperson instructed TechCrunch on the time. A darkish net leak website related to the ALPHV/BlackCat gang additionally took credit score for the assault, claiming to have stolen thousands and thousands of People’ delicate well being and affected person data, giving the primary indication of what number of people this incident had affected.
ALPHV (aka BlackCat) is a identified Russian-speaking ransomware-as-a-service gang. Its associates — contractors who work for the gang — break into sufferer networks and deploy malware developed by ALPHV/BlackCat’s leaders, who take a reduce of the income collected from the ransoms collected from victims to get their information again.
Realizing that the breach was brought on by a ransomware gang modified the equation of the assault from the type of hacking that governments do — generally to ship a message to a different authorities as a substitute of publishing thousands and thousands of individuals’s personal data — to a breach brought on by financially motivated cybercriminals, who’re prone to make use of a wholly totally different playbook to get their payday.
March 3-5, 2024
UnitedHealth pays a ransom of $22 million to hackers, who then disappear
In early March, the ALPHV ransomware gang vanished. The gang’s leak website on the darkish net, which weeks earlier took credit score for the cyberattack, was changed with a seizure discover claiming that U.Okay. and U.S. regulation enforcement took down the gang’s website. However each the FBI and U.Okay. authorities denied taking down the ransomware gang as they’d tried months earlier. All indicators pointed to ALPHV working off with the ransom and pulling an “exit scam.”
In a posting, the ALPHV affiliate who carried out the hack on Change Healthcare claimed that the ALPHV management stole $22 million paid as a ransom and included a hyperlink to a single bitcoin transaction on March 3 as proof of their declare. However regardless of dropping their share of the ransom fee, the affiliate mentioned the stolen information is “still with us.” UnitedHealth had paid a ransom to hackers who left the information behind and disappeared.
March 13, 2024
Widespread disruption throughout U.S. healthcare amid fears of information breach
In the meantime, weeks into the cyberattack, outages had been nonetheless ongoing with many unable to get their prescriptions crammed or having to pay money out of pocket. Army medical insurance supplier TriCare mentioned “all military pharmacies worldwide” had been affected as effectively.
The American Medical Affiliation was saying there was little data from UnitedHealth and Change Healthcare in regards to the ongoing outages, inflicting large disruption that continued to ripple throughout the healthcare sector.
By March 13, Change Healthcare had obtained a “safe” copy of the stolen information that it had simply days earlier paid $22 million for. This allowed Change to start the method of poring by means of the dataset to find out whose data was stolen within the cyberattack, with the goal of notifying as many affected people as attainable.
March 28, 2024
U.S. authorities ups its bounty to $10 million for data resulting in ALPHV seize
By late March, the U.S. authorities mentioned it was upping its bounty for data on key management of ALPHV/BlackCat and its associates.
By providing $10 million to anybody who can establish or find the people behind the gang, the U.S. authorities appeared to hope that one of many gang’s insiders would activate their former leaders. It additionally may very well be seen because the U.S. realizing the specter of having a major variety of People’ well being data doubtlessly printed on-line.
April 15, 2024
Contractor types new ransom gang and publishes some stolen well being information
After which there have been two — ransoms, that’s. By mid-April, the aggrieved affiliate arrange a brand new extortion racket known as RansomHub, and because it nonetheless had the information that it stole from Change Healthcare, it demanded a second ransom from UnitedHealth. In doing so, RansomHub printed a portion of the stolen information containing what gave the impression to be personal and delicate affected person data as proof of their menace.
Ransomware gangs don’t simply encrypt information; additionally they steal as a lot information as attainable and threaten to publish the information if a ransom isn’t paid. This is called “double extortion.” In some instances when the sufferer pays, the ransomware gang can extort the sufferer once more — or, in others, extort the sufferer’s prospects, often called “triple extortion.”
Now that UnitedHealth was keen to pay one ransom, there was a danger that the healthcare large could be extorted once more. It’s why regulation enforcement have lengthy advocated towards paying a ransom that permits criminals to revenue from cyberattacks.
April 22, 2024
UnitedHealth says ransomware hackers stole well being information on a “substantial proportion of people in America”
For the primary time, UnitedHealth confirmed on April 22 — greater than two months after the ransomware assault started — that there was a knowledge breach and that it doubtless impacts a “substantial proportion of people in America,” with out saying what number of thousands and thousands of folks that entails. UnitedHealth additionally confirmed it paid a ransom for the information however wouldn’t say what number of ransoms it finally paid.
The corporate mentioned that the stolen information consists of extremely delicate data, together with medical data and well being data, diagnoses, medicines, check outcomes, imaging and care and remedy plans, and different private data.
Provided that Change Healthcare handles information on about one-third of everybody dwelling in the US, the information breach is prone to have an effect on greater than 100 million individuals at the least. When reached by TechCrunch, a UnitedHealth spokesperson didn’t dispute the doubtless affected quantity however mentioned that the corporate’s information overview was ongoing.
Could 1, 2024
UnitedHealth Group chief govt testifies that Change wasn’t utilizing primary cybersecurity
Maybe unsurprisingly when your organization has had one of many largest information breaches in latest historical past, its chief govt is sure to get known as to testify earlier than lawmakers.
That’s what occurred with UnitedHealth Group (UHG) chief govt Andrew Witty, who on Capitol Hill admitted that the hackers broke into Change Healthcare’s programs utilizing a single set password on a person account not protected with multi-factor authentication, a primary safety characteristic that may forestall password reuse assaults by requiring a second code despatched to that account holder’s telephone.
Certainly one of the largest information breaches in U.S. historical past was totally preventable, was the important thing message. Witty mentioned that the information breach was prone to have an effect on about one-third of individuals dwelling in America — according to the corporate’s earlier estimates that the breach impacts round as many individuals that Change Healthcare processes healthcare claims for.
June 20, 2024
UHG begins notifying affected hospitals and medical suppliers what information was stolen
It took Change Healthcare till June 20 to start formally notifying affected people that their data was stolen, as legally required beneath a regulation generally often called HIPAA, doubtless delayed partly by the sheer dimension of the stolen dataset.
The corporate printed a discover disclosing the information breach and mentioned that it might start notifying people it had recognized within the “safe” copy of the stolen information. However Change mentioned it “cannot confirm exactly” what information was stolen about every particular person and that the knowledge might range from individual to individual. Change says it was posting the discover on its web site, because it “may not have sufficient addresses for all affected individuals.”
The incident was so massive and sophisticated that the U.S. Division of Well being and Human Companies stepped in and mentioned that affected healthcare suppliers, whose sufferers are finally affected by the breach, can ask UnitedHealth to inform affected sufferers on their behalf, an effort seen at lessening the burden on smaller suppliers whose funds had been hit amid the continuing outage.
July 29, 2024
Change Healthcare begins notifying identified affected people by letter
The well being tech large confirmed in late June that it might start notifying these whose healthcare information was stolen in its ransomware assault on a rolling foundation. That course of started in late July.
The letters going out to affected people will more than likely come from Change Healthcare, if not the particular healthcare supplier affected by the hack at Change. The letter confirms what sorts of information was stolen, together with medical information and medical insurance data, and claims and fee data, which Change mentioned consists of monetary and banking data.
