DataBreaches.Net

Menu
  • About
  • Breach Notification Laws
  • Privacy Policy
  • Transparency Report
Menu

Hackers expose information for 700,000 current and former Chicago students, district says

Posted on March 7, 2025 by Dissent

Mila Koumpilova reports an update to the Clop attack on entities using the Cleo file transfer software.

In a ransomware attack last year, Russian hackers stole private information for more than 700,000 current and former Chicago Public Schools students and put it on the dark web, district officials said Friday.

According to the district, the hackers gained access to a server where a CPS technology vendor stores student data. Using a weakness in the vendor’s software that CPS uses to share data with other agencies, the hackers stole information from the district and more than 60 other organizations across the country.

Students’ names, dates of birth, genders, and Chicago Public Schools student ID numbers were stolen.

“While we are still investigating this incident, we believe that all current students, and all former students dating back to the 2017-2018 school year were impacted,” the district said in a statement.

For roughly half of the impacted students, or about 344,000 current and former students, Medicaid ID numbers and dates of program eligibility were included in the data breach.

The stolen student information was originally encrypted, which the district likened to the hackers stealing a locked briefcase but without the key. However, district officials confirmed Friday that the hackers were able to break that encryption, exposing students’ private information.

Read more at Chalkbeat.

h/t, @DougLevin

Related posts:

  • k-12 school districts fall prey to Pysa ransomware
  • Forbes Breach Email Statistics
  • Hackers escalate: leak 200k CCSD students’ data; claim to still have access to CCSD email system
Category: Breach Incidents

Post navigation

← Texas Man Convicted of Sabotaging his Employer’s Computer Systems and Deleting Data
White House cyber director’s office set for more power under Trump, experts say →

Now more than ever

"Stand with Ukraine:" above raised hands. The illustration is in blue and yellow, the colors of Ukraine's flag.

Search

Browse by Categories

Recent Posts

  • Terrible tales of opsec oversights: How cybercrooks get themselves caught
  • International Criminal Court hit with cyber attack during NATO summit
  • Pembroke Regional Hospital reported canceling appointments due to service delays from “an incident”
  • Iran-linked hackers threaten to release emails allegedly stolen from Trump associates
  • National Health Care Fraud Takedown Results in 324 Defendants Charged in Connection with Over $14.6 Billion in Alleged Fraud
  • Swiss Health Foundation Radix Hit by Cyberattack Affecting Federal Data
  • Russian hackers get 7 and 5 years in prison for large-scale cyber attacks with ransomware, over 60 million euros in bitcoins seized
  • Bolton Walk-In Clinic patient data leak locked down (finally!)
  • 50 Customers of French Bank Hit by Insider SIM Swap Scam
  • Ontario health agency atHome ordered to inform 200,000 patients of March data breach

No, You Can’t Buy a Post or an Interview

This site does not accept sponsored posts or link-back arrangements. Inquiries about either are ignored.

And despite what some trolls may try to claim: DataBreaches has never accepted even one dime to interview or report on anyone. Nor will DataBreaches ever pay anyone for data or to interview them.

Want to Get Our RSS Feed?

Grab it here:

https://databreaches.net/feed/

RSS Recent Posts on PogoWasRight.org

  • The Trump administration is building a national citizenship data system
  • Supreme Court Decision on Age Verification Tramples Free Speech and Undermines Privacy
  • New Jersey Issues Draft Privacy Regulations: The New
  • Hacker helped kill FBI sources, witnesses in El Chapo case, according to watchdog report
  • Germany Wants Apple, Google to Remove DeepSeek From Their App Stores
  • Supreme Court upholds Texas law requiring age verification on porn sites
  • Justices nix Medicaid ‘right’ to choose doctor, defunding Planned Parenthood in South Carolina

Have a News Tip?

Email: Tips[at]DataBreaches.net

Signal: +1 516-776-7756

Contact Me

Email: info[at]databreaches.net

Mastodon: Infosec.Exchange/@PogoWasRight

Signal: +1 516-776-7756

DMCA Concern: dmca[at]databreaches.net
© 2009 – 2025 DataBreaches.net and DataBreaches LLC. All rights reserved.