• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Fortinet FortiWeb flaw CVE-2025-25257 exploited hours after PoC release

 | 

Authorities released free decryptor for Phobos and 8base ransomware

 | 

Anne Arundel Dermatology data breach impacts 1.9 million people

 | 

LameHug: first AI-Powered malware linked to Russia’s APT28

 | 

5 Features Every AI-Powered SOC Platform Needs in 2025

 | 

Broadcom patches critical VMware flaws exploited at Pwn2Own Berlin 2025

 | 

Stormous Ransomware gang targets North Country HealthCare, claims 600K patient data stolen

 | 

United Natural Foods Expects $400M revenue impact from June cyber attack

 | 

Cisco patches critical CVE-2025-20337 bug in Identity Services Engine with CVSS 10 Severity

 | 

UNC6148 deploys Overstep malware on SonicWall devices, possibly for ransomware operations

 | 

Operation Eastwood disrupted operations of pro-Russian hacker group NoName057(16)

 | 

Salt Typhoon breach: Chinese APT compromises U.S. Army National Guard network

 | 

Former US Army member confesses to Telecom hack and extortion conspiracy

 | 

CVE-2025-6554 marks the fifth actively exploited Chrome Zero-Day patched by Google in 2025

 | 

DDoS peaks hit new highs: Cloudflare mitigated massive 7.3 Tbps assault

 | 

U.S. CISA adds Wing FTP Server flaw to its Known Exploited Vulnerabilities catalog

 | 

Android Malware Konfety evolves with ZIP manipulation and dynamic loading

 | 

Belk hit by May cyberattack: DragonForce stole 150GB of data

 | 

North Korea-linked actors spread XORIndex malware via 67 malicious npm packages

 | 

FBI seized multiple piracy sites distributing pirated video games

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Data Breach
  • Hacking
  • Companies impacted by Mailchimp data breach warn their customers

Companies impacted by Mailchimp data breach warn their customers

Pierluigi Paganini January 23, 2023

The recent Mailchimp data breach has impacted multiple organizations, some of them are already notifying their customers.

The popular email marketing and newsletter platform Mailchimp recently disclosed a news data breach, the incident exposed the data of 133 customers.

Threat actors targeted the company’s employees and contractors to gain access to an internal support and account admin tool.

“On January 11, the Mailchimp Security team identified an unauthorized actor accessing one of our tools used by Mailchimp customer-facing teams for customer support and account administration. The unauthorized actor conducted a social engineering attack on Mailchimp employees and contractors, and obtained access to select Mailchimp accounts using employee credentials compromised in that attack.” reads the notice published by the company. “Based on our investigation to date, this targeted incident has been limited to 133 Mailchimp accounts.”

mailchimp

The company added that there is no evidence that this security breach affected Intuit systems or other customer data beyond the reported 133 accounts.

The malicious activity was discovered on January 11, 2023, in response to the intrusion the company temporarily suspended access for impacted accounts. The company also notified the primary contacts for all affected accounts less than 24 hours after the initial discovery.

The list of the impacted companies includes WooCommerce, FanDuel, and the Solana Foundation.

TechCrunch first reported that one of the compromised accounts belongs to e-commerce giant WooCommerce.

“In a note to customers, WooCommerce said it was notified by Mailchimp a day later that the breach may have exposed the names, store web addresses and email addresses of its customers, though it said no customer passwords or other sensitive data was taken.” reads the post published by TechCrunch. “WooCommerce, which builds and maintains popular open source e-commerce tools for small businesses, relies on Mailchimp for sending emails to its customers. WooCommerce is said to have more than five million customers.”

WooCommerce sent a notice related to MailChimp data breach to its users via email.

https://twitter.com/Arm_i_n/status/1615719010921844737

The company informed customers that some of their data may have been exposed, including name, URL, address, and email address. WooCommerce pointed out that payment data, passwords or other sensitive information was not exposed.

MailChimp data breach also impacted the Solana Foundation, the nonprofit organization behind the Solana blockchain. The organization told its customers that the security breach may have exposed their info, including names, email addresses and Telegram usernames.

BREAKING: The Solana foundation email database at MailChimp was hacked. Beware of ALL emails for Solana projects.

Double check all links.
Don’t enter seed phrases to access your wallets through a website.
Don’t connect your wallet to any links from emails. pic.twitter.com/7LlNMydlht

— Jacob Canfield (@JacobCanfield) January 16, 2023

Another company impacted by the data breach is the online gambling service FanDuel who warned its customers of phishing threat after data breach at Mailchimp. The company told its customers that their name and email address may have been compromised due to a security breach suffered a third-party technology vendor.

Both data breach notices send by Solana and FanDuel do not explicitly name Mailchimp.

Source Graham Cluley

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

[adrotate banner=”9″][adrotate banner=”12″]

Pierluigi Paganini

(SecurityAffairs – hacking, data breach)

[adrotate banner=”5″]

[adrotate banner=”13″]


facebook linkedin twitter

data breach Hacking information security news IT Information Security Mailchimp Pierluigi Paganini Security Affairs

you might also like

Pierluigi Paganini July 19, 2025
Fortinet FortiWeb flaw CVE-2025-25257 exploited hours after PoC release
Read more
Pierluigi Paganini July 18, 2025
Authorities released free decryptor for Phobos and 8base ransomware
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Fortinet FortiWeb flaw CVE-2025-25257 exploited hours after PoC release

    Hacking / July 19, 2025

    Authorities released free decryptor for Phobos and 8base ransomware

    Malware / July 18, 2025

    Anne Arundel Dermatology data breach impacts 1.9 million people

    Data Breach / July 18, 2025

    LameHug: first AI-Powered malware linked to Russia’s APT28

    APT / July 18, 2025

    5 Features Every AI-Powered SOC Platform Needs in 2025

    Security / July 18, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT