Xfinity Writhes; 36 Million Records Breached via Vendor Vulnerability

  • By Steven
  • Published: Dec 22, 2023
  • Last Updated: Dec 25, 2023

Xfinity Breach

Xfinity is the name of Comcast Communications’ internet, TV, and phone service; it is the most significant cabled internet service in the states, with more than 32 million residential customers. Available in 39 contiguous states and the capital, the service provides communication solutions for individuals, companies, institutions, and clinical networks. Xfinity’s vast influence has made them a target for cybercriminals. In October, the company was under attack again; this time, the criminals used a vendor vulnerability. 

How Did the Attack Occur? 

2023 has been the year of vendor vulnerabilities for cybercriminals. In May, the world was alarmed by the prevalence of Progress Software’s MOVEit breach; worldwide, thousands of organizations revealed unsavory actors had accessed their systems. Xfinity’s breach is similar; they entrusted consumer data to accredited software provider Citrix.

At the beginning of October, Citrix discovered a system vulnerability within a specific product, prompting them to warn users of the product. Xfinity was among those warned of the vulnerability; however, their notice of the event indicates they did not immediately act to patch the weakness. Consequently, cybercriminals accessed the Citrix product and freely stole millions of people’s information. 

What Information Was Viewed or Stolen? 

According to the notice published on Xfinity’s website—and the Maine Attorney General’s office—the stolen information belongs to customers. The breach involves customer usernames and encrypted passwords, which accounts for Xfinity’s mandatory password resets. Additionally, some customers have had their sensitive information stolen, including full names, contact information like email and phone number, the last four digits of their Social Security Numbers, their dates of birth, and their secret questions/answers. 

How Did Xfinity Admit to the Breach? 

Citrix notified Xfinity of the vulnerability on or around October 10th, 2023; two weeks later, on October 23rd, Citrix issued additional guidance about the event, which prompted Xfinity to mitigate its systems. Before this mitigation occurred, however, unauthorized actors accessed the sensitive network. Their preliminary investigation suggests the actors gained access to the systems between October 16th and 19th. The timeline indicates that Xfinity did not immediately act against the vulnerability threat; had they, they could have stopped the event entirely. 

What Will Become of the Stolen Information? 

The data stolen from Xfinity contains public and sensitive information; the sensitive information is not immediately attributable to fraudulent activities, as it is when assailants access financial data. Instead, the assailants can use the data stolen from Xfinity to breach other accounts with the same information; they only need to know the provider of services. Consequently, individuals with data exposed in this event must immediately change and update their accounts with the same credentials. 

What Should Affected Parties Do in the Aftermath of the Breach? 

Although Xfinity serves 32 million customers in the US, this breach is estimated to impact 35,879,455 people; Citrix’s product vulnerability likely pushed this number higher regarding the vendor’s total breach impact. Additionally, Xfinity’s investigations are ongoing, meaning more information may become available later. Their experts will likely continue to notify those impacted in ongoing waves.
Don’t wait for the physical notice to protect yourself and your family. Xfinity has made a mandatory password reset, but this isn’t enough if the hackers have your security question information. Those who have used the same answers and questions across accounts must immediately change and update those credentials. They should also enable multi-factor authentication permissions everywhere and consider account monitoring services. It may take weeks before a notice arrives—don’t wait for it to secure your accounts.

About the Author
IDStrong Logo

Related Articles

Instagram Vulnerability Allowed Hackers Access to Control Your Phone

Security experts Check Point Research discovered a critical vulnerability while examining Instagra ... Read More

Alien Malware Infects More than 226 Mobile Apps and Steals Bank Data

As reported on September 24, 2020, by ZDNet and ThreatPost, a new strain of malware named “A ... Read More

Universal Health Systems Hit by Ransomware Attack

Universal Health Systems (UHS), a Fortune 500 company owning more than 400 hospitals across the co ... Read More

Exchange Server Bug Exposes a Big Risk to Hackers

Months after Microsoft released a patch to fix a serious flaw in MS Exchange Server, more than 61% ... Read More

Clients’ Bank Data Exposed in Blackbaud Ransomware Attack

Blackbaud software was victim to a ransomware attack last May, and new information suggests that c ... Read More

Latest Articles

What Are Vacation Club and Timeshare Scams and How to Avoid Them

What Are Vacation Club and Timeshare Scams and How to Avoid Them

In early 2023, the FBI made a public service announcement warning that scammers had been targeting owners of timeshares in Mexico; they reported an estimated $39.6 million in losses involving only Mexico timeshares.

What to Do if Your Credit Card is Lost or Stolen

What to Do if Your Credit Card is Lost or Stolen

Credit and debit cards have become the most prominent form of wealth access in the last decade. Once consumers pulled out thick wallets of cash—they now pull out thin clips of cards—if they bother using a card, not a watch or cellphone.

Credit Card CVV Number: Meaning and Security

Credit Card CVV Number: Meaning and Security

Inspect your credit card, and you'll likely find interesting—and crucial—elements of the plastic rectangle. The front might display the provider's name, a chip, some digits, or an entire card number; the back might hold much the same, along with a signature, when necessary, and a "valid thru [sic]" date.

Featured Articles

How to Buy a House with Bad Credit

How to Buy a House with Bad Credit

Buying your own home is the American Dream, but it might seem out of reach to those with bad credit. However, the good news is, if your credit is less than perfect, you do still have options and in most cases, can still buy a home.

How Secure Is Your Password? Tips to Improve Your Password Security

How Secure Is Your Password? Tips to Improve Your Password Security

Any good IT article on computers and network security will address the importance of strong, secure passwords. However, the challenge of good passwords is that most people have a hard time remembering them, so they use simple or obvious ones that pose a security risk.

Top 10 Senior Scams and How to Prevent Them

Top 10 Senior Scams and How to Prevent Them

Senior scams are becoming a major epidemic for two reasons. First, seniors often have a lot of money in the bank from a life of working hard and saving.

Free Identity Exposure Scan
Instantly and Securely Check if Your Personal Information is Exposed on the Dark Web or Sold by Data Brokers
Please enter first name
Please enter last name
Please select a state
Free Identity Threat Scan
Instantly Check if Your Personal Information is Exposed
All fields below are required
Please enter first name
Please enter last name
Please enter a city
Please select a state
Please enter an age
Please enter an email address