Quest Diagnostics reports cyber breach affecting ‘certain patient records’

Advertisement

Advertise with us

CHICAGO (AP) — Medical laboratory operator Quest Diagnostics said it learned of a cyber breach of one of its systems this week, likely compromising some records for patients.

Read this article for free:


By clicking the button above, an account will be created and you will begin to receive some of our recommended newsletters. You may opt out of any newsletter by visiting your Email and Communication Preferences page or by clicking "unsubscribe" at the bottom of any email.

or

Already have an account? Log in here »

To continue reading, please subscribe:

Digital Subscription

One year of digital access for only $1.44 a week*

  • Enjoy unlimited reading on winnipegfreepress.com
  • Read the E-Edition, our digital replica newspaper
  • Access News Break, our award-winning app
  • Play interactive puzzles

*Billed as $5.77 plus GST every four weeks. After 52 weeks, price increases to the regular rate of $19.95 plus GST every four weeks. Offer available to new and qualified returning subscribers only. Cancel any time.

To continue reading, please subscribe:

Add Free Press access to your Brandon Sun subscription for only an additional

$1 for the first 4 weeks*

  • Enjoy unlimited reading on winnipegfreepress.com
  • Read the E-Edition, our digital replica newspaper
  • Access News Break, our award-winning app
  • Play interactive puzzles
Start now

*Your next Brandon Sun subscription payment will increase by $1.00 and you will be charged $17.95 plus GST for four weeks. After four weeks, your payment will increase to $24.95 plus GST every four weeks.

CHICAGO (AP) — Medical laboratory operator Quest Diagnostics said it learned of a cyber breach of one of its systems this week, likely compromising some records for patients.

In a Thursday regulatory filing, Quest Diagnostics reported “unauthorized access” to its Quanum Lab Services Manager, a platform where certain clients can place test orders and receive or look up their results. The company said it discovered the hack on Wednesday and notified federal law enforcement.

How many patients and which particular records have been affected is still unknown. Quest Diagnostics said it believes “certain patient records” were accessed in the breach, but that the full scope remains under investigation.

FILE - A Quest Diagnostics logo is seen on May 10, 2025, in East Rutherford, N.J. (AP Photo/Angelina Katsanis, File)
FILE - A Quest Diagnostics logo is seen on May 10, 2025, in East Rutherford, N.J. (AP Photo/Angelina Katsanis, File)

The New Jersey-based company said it’s also working with external cybersecurity experts to assist in its response.

Quest Diagnostics has seen hacks impacting patient records before. In 2016, for example, the company said data including lab results and contact information of about 34,000 people was exposed in another online breach. And in 2019, other personal information belonging to about 11.9 million Quest patients was affected after a separate hack at American Medical Collection Agency, a billing collections service provider.

Cyberattacks are on the rise across industries. Beyond healthcare, other breaches have recently disrupted anything from supermarket chains to core education applications.

Governments and companies worldwide are working more broadly on online security updates. Urgency erupted this week, after an AI-assisted discovery of vulnerabilities in a programming language called PHP, which is vital to 70% of websites globally.

Outages and limited service have continued for many as firms rush to patch those risks. But based on the company’s investigation, Quest Diagnostics confirmed to The Associated Press Thursday that its cyber breach was not related to the PHP issue.

Report Error Submit a Tip

More Stories

Quest Diagnostics reports cyber breach affecting ‘certain patient records’

The Associated Press 2 minute read Preview

Quest Diagnostics reports cyber breach affecting ‘certain patient records’

The Associated Press 2 minute read Thursday, Oct. 22, 2026

CHICAGO (AP) — Medical laboratory operator Quest Diagnostics said it learned of a cyber breach of one of its systems this week, likely compromising some records for patients.

In a Thursday regulatory filing, Quest Diagnostics reported “unauthorized access” to its Quanum Lab Services Manager, a platform where certain clients can place test orders and receive or look up their results. The company said it discovered the hack on Wednesday and notified federal law enforcement.

How many patients and which particular records have been affected is still unknown. Quest Diagnostics said it believes “certain patient records” were accessed in the breach, but that the full scope remains under investigation.

The New Jersey-based company said it's also working with external cybersecurity experts to assist in its response.

Read
Thursday, Oct. 22, 2026

News briefs for Sunday, October 25, 2026

1 minute read Updated: 11:13 AM CDT

A collection of breaking news briefs filed on Sunday, October 25, 2026

Leaf Rapids man charged with second-degree murder

11:13 AM

RCMP have charged a 23-year-old Leaf Rapids man with second-degree murder in the death of a 55-year-old man last week.

Bombers top B.C. Lions 34-10 to earn playoff spot

Taylor Allen 4 minute read Preview

Bombers top B.C. Lions 34-10 to earn playoff spot

Taylor Allen 4 minute read Yesterday at 8:41 AM CDT

Dru Brown saved the Winnipeg Blue Bombers’ season.

They were a trainwreck for the opening 40-plus minutes in Vancouver on Friday night before Brown provided the ultimate spark, accounting for 31 consecutive points in a 34-10 victory over the B.C. Lions to clinch a playoff berth.

The Lions — who had nothing to play for and rested a long list of key starters — somehow led 10-3 late in the third quarter when Bombers quarterback Zach Collaros was forced to leave the game. Lions defensive tackle Nathan Cherry was flagged for roughing the passer after driving Collaros into the turf, and the 38-year-old pivot was ruled out shortly thereafter.

And then Brown’s brilliance began.

Read
Yesterday at 8:41 AM CDT

Echoes of Idle No More as Carney set to meet with First Nations

Niigaan Sinclair 5 minute read Preview

Echoes of Idle No More as Carney set to meet with First Nations

Niigaan Sinclair 5 minute read 10:29 AM CDT

The prime minister, premiers and First Nations leaders will meet in Ottawa Monday to discuss a host of issues, including Indigenous involvement in energy and resource development projects.

Read
10:29 AM CDT

Security under magnifying glass after suspicious death on Mountain Avenue

Morgan Modjeski 5 minute read Preview

Security under magnifying glass after suspicious death on Mountain Avenue

Morgan Modjeski 5 minute read Yesterday at 8:15 AM CDT

Homicide detectives are investigating the suspicious death of a 70-year-old man at a seniors high-rise on Mountain Avenue.

Forensic investigators and detectives have been at the building, at 595 Mountain Ave., and questioning residents about the death of Richard Boychuk, whose body was found in his second-storey suite Tuesday morning.

The 70-year-old, who used a wheelchair, had lived in the Winnipeg Housing Rehabilitation Corp. apartment for several years, said close friend Angela Abdilla.

She would clean, shop and take care of Boychuk, a former Elvis impersonator.

Read
Yesterday at 8:15 AM CDT

First Crumbl cookie shop opens in Winnipeg

Gabrielle Piché 3 minute read Preview

First Crumbl cookie shop opens in Winnipeg

Gabrielle Piché 3 minute read Friday, Oct. 23, 2026

The early birds got their cookies.

Klaudia and Jayson Ballantyne were the first in line for the grand opening of Winnipeg’s first Crumbl location at 1570 Regent Ave. West, arriving at 2 a.m. Friday — six hours before the cookie chain was set to open.

The brother and sister brought their lawn chairs and blankets and hunkered down.

Roughly 90 minutes later, by their count, the next customers arrived.

Read
Friday, Oct. 23, 2026