News12 New York
N12 Originals
Numbers & Links
Local News
Crime
Weather
Politics
Partly Cloudy Night
51°
Local News
Crime
Weather
Politics

Xfinity notifies customers of data breach

Hackers accessed Xfinity customers' personal information by exploiting a vulnerability in software used by the company, the Comcast-owned telecommunications business announced this week.

Associated Press

•

Dec 20, 2023, 7:35 AM

•

Updated

Share:

More Stories

Hackers accessed Xfinity customers' personal information by exploiting a vulnerability in software used by the company, the Comcast-owned telecommunications business announced this week.

In a Monday notice to customers, Xfinity said there was unauthorized access to internal systems as a result of this vulnerability — which was previously announced by software provider Citrix — between Oct. 16 and 19.

Xfinity discovered the “suspicious activity” on Oct. 25, and in the following months determined that information was “likely acquired.” On Dec. 6, the company concluded that information included usernames and hashed passwords — and, for some customers, the last four digits of Social Security numbers, account security questions, birthdates and contact information.

Analysis of the breach is still continuing but to date, Xfinity is “not aware of any customer data being leaked anywhere, nor of any attacks on our customers,” the company said in a statement sent to The Associated Press Tuesday.

Xfinity is also requiring customers to reset their passwords, while strongly recommending two-factor or multifactor authentication.

A filing with Maine's office of the attorney general disclosed that nearly 35.9 million people were affected by this breach. The company declined to confirm a specific number Tuesday, but noted the filing's figure represents user IDs.

Philadelphia-based Comcast has more than 32 million broadband customers, according a recent earnings release.

In addition to Xfinity, Citrix provides software to thousands of companies around the world. The previously-announced vulnerability, dubbed “Citrix Bleed,” has also been linked to hacks targeting the Industrial and Commercial Bank of China's New York arm and a Boeing subsidiary, among others.

Under new rules that went into effect Monday, the Securities Exchange Commission now requires public companies to disclose all cybersecurity breaches that could affect their bottom lines — within four days of determining a breach is material. As of Tuesday, there were no SEC filings from Comcast about the recent data breach and the company did not immediately address it.

Top Stories

00:39
RGNYONKERSCOLUMBUSDAY1004_2026-10-04-18-28-48

Yonkers celebrates Italian heritage with 99th annual Columbus Day parade

00:57
F P2 PM 1

Sunny skies, breezy and dry conditions for Monday the Hudson Valley

00:54
RTWCHVTattooConventionESalinasVOSOT6pm_2026-10-04-18-36-44

Westchester New York Tattoo Convention returns to White Plains for 10th annual show

00:27
GENERIC POLICE LIGHTS

Pleasant Valley New Horizons Resources staff member accused of striking person in his care

00:28
Handcuffs generic

2 men indicted in $18K Airmont heroin bust

00:43
APCornellRapeCaseSat10032026SG001

Cornell president calls alleged gang rape ‘deeply disturbing,’ pledges greater transparency

01:22
Screenshot 2026-10-02 210610

Yonkers police investigate allegations involving staff member at Paideia School 15

00:52
CoxVeteran

Health aide pleads guilty to endangering welfare of disabled vet at state-run facility

01:35
blaise fearless

Fearless! Clothesline Project returns as domestic violence calls rise, funding concerns continue

02:00
Screenshot 2026-10-02 171650

Halloween season underway in Sleepy Hollow; officials urge visitors to take the train

00:28
flockcameracrackdownbillCM_2026-10-02-16-45-15

New bill seeks to ban federal use of Flock license plate readers

01:35
Screenshot 2026-10-02 172212

Rockland executive proposes 2027 budget with no property tax increase

00:19
Screenshot 2026-10-02 162219

Police seize heroin after traffic stop in Harrison

00:26
blaise wallkill

Police: 45-year-old woman found dead inside Town of Wallkill home

603fe975-0e0a-4e5b-aff2-dc09dc3fa042

Naked man charged with public lewdness after LaGrange park brawl

00:25
323ffd42-f5b2-46dd-831b-1d348297f384

Ossining man accused of peeping on woman through bathroom window

01:57
MTRG Cornell Latest 1002_2026-10-02-17-38-21

NY governor says Cornell rape accuser was ‘failed’ by people obligated to protect her

CREDIT: AP PHOTO

CBS announces Tony Romo's permanent exit following arrest for operating a vehicle while intoxicated

00:21
Screenshot 2026-10-02 110642

Mount Vernon man accused of hitting NYPD officer with moped in Wakefield

00:31
cat file photo

Investigation finds heavy metals in nearly all cat food

App StoreGoogle Play Store

info

Newsletter

Send Photos/Videos

Contact

About Us

News Team

News 12 New York

follow us

Twitter

Facebook

Instagram

more resources

Optimum Corporate

Optimum Service

Advertise on News 12

Careers

Content Removal Policy

© 2026 N12N, LLC

Privacy Policy

Terms of Service

Ad Choices