Epsilon
Company Details
Linkedin ID:
epsilon
Website:
Employees number:
9,728
Number of followers:
461,587
NAICS:
541613
Industry Type:
Homepage:
epsilon.com
IP Addresses:
0
Company ID:
EPS_8085206
Scan Status:
In-progress
Epsilon Company CyberSecurity Posture
epsilon.com
Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. The world’s leading brands use Epsilon to harmonize consumer engagement across their paid, owned and earned channels, leveraging capabilities that include data, identity resolution, customer data platforms, clean rooms, digital media, retail media, site personalization, direct mail, loyalty, email marketing and measurement. By applying artificial intelligence against privacy-centric consumer recognition–embedded in data-enriched analytic, marketing and media solutions–Epsilon allows marketers to bridge the divide between marketing and advertising technology, engaging consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels. Follow us on Instagram: @epsilonmarketing
Epsilon A.I CyberSecurity Scoring
Epsilon Risk Score (AI oriented)Between 750 and 799
Epsilon
Updated:
- Powered by our proprietary A.I cyber incident model
- Insurance preferes TPRM score to calculate premium
Epsilon Global Score (TPRM)XXXX
Epsilon
- Instant access to detailed risk factors
- Benchmark vs. industry & size peers
- Vulnerabilities
- Findings
Epsilon Company CyberSecurity News & History
Past Incidents
2
Attack Types
1
Epsilon Data Management, LLC
Breach
Rankiteo Explanation
Attack without any consequences
Description: The Iowa Attorney General's Office reported on April 5, 2011, a data breach involving Epsilon Data Management LLC, which exposed a subset of customer email addresses and names. The breach occurred due to unauthorized access to Epsilon's email system, with a potential impact on Iowans and a warning regarding increased phishing threats.
Epsilon
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: Epsilon—the world’s largest permission-based email marketing company suffered a massive data breach incident in April of 2011 where the names and addresses of 60 million users were stolen. An unauthorized entry got into Epsilon’s email system and breached the mails and names of around 2% of their clients. Companies like Walgreens, BestBuy, CitiGroup, JPMorgan, Capital One and others were all affected indirectly.
Epsilon Company Scoring based on AI Models
Cyber Incidents Likelihood 3 - 6 - 9 months
A.I Risk Score Likelihood 3 - 6 - 9 months
Underwriter Stats for Epsilon
Incidents vs Advertising Services Industry Average (This Year)
No incidents recorded for Epsilon in 2025.
Incidents vs All-Companies Average (This Year)
No incidents recorded for Epsilon in 2025.
Incident Types Epsilon vs Advertising Services Industry Avg (This Year)
No incidents recorded for Epsilon in 2025.
Incident History — Epsilon (X = Date, Y = Severity)
Epsilon cyber incidents detection timeline including parent company and subsidiaries
Epsilon Company Subsidiaries
Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. The world’s leading brands use Epsilon to harmonize consumer engagement across their paid, owned and earned channels, leveraging capabilities that include data, identity resolution, customer data platforms, clean rooms, digital media, retail media, site personalization, direct mail, loyalty, email marketing and measurement. By applying artificial intelligence against privacy-centric consumer recognition–embedded in data-enriched analytic, marketing and media solutions–Epsilon allows marketers to bridge the divide between marketing and advertising technology, engaging consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels. Follow us on Instagram: @epsilonmarketing
Loading...
Epsilon Similar Companies
Publicis Groupe
Founded in 1926 by Marcel Bleustein-Blanchet, today Publicis Groupe is the largest communications group in the world and a leader in marketing, communication, and digital business transformation, led by Arthur Sadoun, the third CEO in its history. Publicis Groupe is positioned at every step of the
Interpublic Group (IPG)
Interpublic (NYSE: IPG) is a values-based, data-fueled, and creatively-driven provider of marketing solutions. Home to some of the world’s best-known and most innovative communications specialists, IPG global brands include Acxiom, Craft, FCB, FutureBrand, Golin, Initiative, IPG Health, IPG Mediabra
TBWA\Worldwide
TBWA is The Disruption Company®. We are a Collective of creative minds with an unlimited creative canvas. We create brand platforms that defy convention and compete with culture. Thanks to our trademarked Disruption® methodology, we build the world’s strongest brands. Brands that own an unfair share
EssenceMediacom
Hello. We are EssenceMediacom. GroupM’s newest and largest agency, committed to delivering marketing breakthroughs for brands. We have disrupted the old models across media, creative, innovation and analytics to find new opportunities for advertisers and deliver truly integrated media solutions.
Ogilvy
Ogilvy has been creating impact for brands through iconic, culture-changing, value-driving ideas since the company was founded by David Ogilvy 75 years ago. We build on that rich legacy through Borderless Creativity – innovating at the intersections of its advertising, public relations, relationship
Clear Channel Europe
Clear Channel Europe is a division of leading global Out of Home media company, Clear Channel Outdoor Holdings, Inc. (NYSE: CCO). The Clear Channel Europe portfolio spans 14 markets with 260,000 advertising panels. Clear Channel Europe has 2,600 dedicated employees. Our Mission is To Create the fu
VML
VML is a global powerhouse born from the unification of Wunderman Thompson and VMLY&R — two of the world's most powerful and accomplished creative agencies with complementary capabilities and geographic strengths. We have an industry-unique opportunity to provide our client partners with a fully int
Quad (NYSE: QUAD) is a global marketing experience company that helps brands make direct consumer connections, from household to in-store to online. Supported by state-of-the-art technology and data-driven intelligence, Quad uses its suite of media, creative and production solutions to streamline th
dentsu
We are dentsu. We team together to help brands predict and plan for disruptive future opportunities and create new paths to growth in the sustainable economy. We know people better than anyone else and we use those insights to connect brand, content, commerce and experience, underpinned by modern cr
.png)
Epsilon CyberSecurity News
September 12, 2025 07:00 AM
American Systems acquires Epsilon, adds 400 employees
Chantilly-based government IT contractor American Systems announced that it has acquired North Carolina-based cybersecurity company Epsilon.
September 08, 2025 07:00 AM
AMERICAN SYSTEMS Buys Epsilon
John Steckel, AMERICAN SYSTEMS AMERICAN SYSTEMS has acquired Epsilon Inc., a managed IT and cybersecurity company based in Weaverville,...
September 08, 2025 07:00 AM
AMERICAN SYSTEMS Completes Acquisition of Epsilon, Inc.
Acquisition of Information Technology Solutions Firm Expands Service Offerings and Deepens Customer ValueCHANTILLY, Va., Sept.
July 31, 2025 07:00 AM
OnlyFans, Discord ClickFix-Themed Pages Spread Epsilon Red Ransomware
A sophisticated new ransomware campaign is actively tricking internet users around the world by employing fake verification pages to spread...
July 29, 2025 07:00 AM
Ransomware spread using HTA files in new ClickFix campaign
Epsilon Red ransomware is being spread via a unique ClickFix lure that convinces victims to download and execute HTML Application files.
July 29, 2025 07:00 AM
Chaos RaaS Emerges After BlackSuit Takedown, Demanding $300K from U.S. Victims
Chaos ransomware rises after BlackSuit takedown, hitting U.S. targets with $300K demands and stealthy evasion tactics.
July 25, 2025 07:00 AM
Hackers Trick Victims into Downloading Weaponized .HTA Files to Install Red Ransomware
A new wave of ransomware attacks has surfaced in July 2025, leveraging weaponized HTML (.HTA) files to silently deploy the Epsilon Red...
June 24, 2025 04:21 AM
Department of Computer Science
Kettering University's Computer Science Department offers highly flexible undergraduate and graduate degrees in computer science that help you work toward...
June 20, 2025 07:00 AM
All About Privacy-Enhancing Technologies (PETS)
PETs, also known as privacy-preserving or data-protection technologies, are essentially practices, techniques, and tools designed to protect the privacy of...
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
Epsilon CyberSecurity History Information
Official Website of Epsilon
The official website of Epsilon is https://www.epsilon.com.
Epsilon’s AI-Generated Cybersecurity Score
According to Rankiteo, Epsilon’s AI-generated cybersecurity score is 780, reflecting their Fair security posture.
How many security badges does Epsilon’ have ?
According to Rankiteo, Epsilon currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does Epsilon have SOC 2 Type 1 certification ?
According to Rankiteo, Epsilon is not certified under SOC 2 Type 1.
Does Epsilon have SOC 2 Type 2 certification ?
According to Rankiteo, Epsilon does not hold a SOC 2 Type 2 certification.
Does Epsilon comply with GDPR ?
According to Rankiteo, Epsilon is not listed as GDPR compliant.
Does Epsilon have PCI DSS certification ?
According to Rankiteo, Epsilon does not currently maintain PCI DSS compliance.
Does Epsilon comply with HIPAA ?
According to Rankiteo, Epsilon is not compliant with HIPAA regulations.
Does Epsilon have ISO 27001 certification ?
According to Rankiteo,Epsilon is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of Epsilon
Epsilon operates primarily in the Advertising Services industry.
Number of Employees at Epsilon
Epsilon employs approximately 9,728 people worldwide.
Subsidiaries Owned by Epsilon
Epsilon presently has no subsidiaries across any sectors.
Epsilon’s LinkedIn Followers
Epsilon’s official LinkedIn profile has approximately 461,587 followers.
NAICS Classification of Epsilon
Epsilon is classified under the NAICS code 541613, which corresponds to Marketing Consulting Services.
Epsilon’s Presence on Crunchbase
No, Epsilon does not have a profile on Crunchbase.
Epsilon’s Presence on LinkedIn
Yes, Epsilon maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/epsilon.
Cybersecurity Incidents Involving Epsilon
As of November 27, 2025, Rankiteo reports that Epsilon has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
Epsilon has an estimated 32,306 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at Epsilon ?
Incident Types: The types of cybersecurity incidents that have occurred include Breach.
Incident Details
Can you provide details on each incident ?
Title: Epsilon Data Breach
Description: Epsilon, the world’s largest permission-based email marketing company, suffered a massive data breach incident in April of 2011 where the names and addresses of 60 million users were stolen. An unauthorized entry got into Epsilon’s email system and breached the mails and names of around 2% of their clients. Companies like Walgreens, BestBuy, CitiGroup, JPMorgan, Capital One and others were all affected indirectly.
Date Detected: April 2011
Type: Data Breach
Attack Vector: Unauthorized Entry
Title: Epsilon Data Management LLC Data Breach
Description: The Iowa Attorney General's Office reported on April 5, 2011, a data breach involving Epsilon Data Management LLC, which exposed a subset of customer email addresses and names. The breach occurred due to unauthorized access to Epsilon's email system, with a potential impact on Iowans and a warning regarding increased phishing threats.
Date Detected: 2011-04-05
Date Publicly Disclosed: 2011-04-05
Type: Data Breach
Attack Vector: Unauthorized Access
What are the most common types of attacks the company has faced ?
Common Attack Types: The most common types of attacks the company has faced is Breach.
Impact of the Incidents
What was the impact of each incident ?
Incident : Data Breach EPS153827123
Data Compromised: Names, Email addresses
Incident : Data Breach EPS458072625
Data Compromised: Email addresses, Names
Systems Affected: Email system
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Names, Email Addresses, , Email Addresses, Names and .
Which entities were affected by each incident ?
Incident : Data Breach EPS153827123
Entity Name: Epsilon
Entity Type: Company
Industry: Email Marketing
Size: Large
Customers Affected: 60 million
Incident : Data Breach EPS153827123
Entity Name: Walgreens
Entity Type: Company
Industry: Retail
Size: Large
Incident : Data Breach EPS153827123
Entity Name: BestBuy
Entity Type: Company
Industry: Retail
Size: Large
Incident : Data Breach EPS153827123
Entity Name: CitiGroup
Entity Type: Company
Industry: Financial Services
Size: Large
Incident : Data Breach EPS153827123
Entity Name: JPMorgan
Entity Type: Company
Industry: Financial Services
Size: Large
Incident : Data Breach EPS153827123
Entity Name: Capital One
Entity Type: Company
Industry: Financial Services
Size: Large
Incident : Data Breach EPS458072625
Entity Name: Epsilon Data Management LLC
Entity Type: Company
Industry: Data Management
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Breach EPS153827123
Type of Data Compromised: Names, Email addresses
Number of Records Exposed: 60 million
Personally Identifiable Information: NamesEmail Addresses
Incident : Data Breach EPS458072625
Type of Data Compromised: Email addresses, Names
Personally Identifiable Information: Email addressesNames
References
Where can I find more information about each incident ?
Where can stakeholders find additional resources on cybersecurity best practices ?
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: Iowa Attorney General's OfficeDate Accessed: 2011-04-05.
Additional Questions
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on April 2011.
What was the most recent incident publicly disclosed ?
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2011-04-05.
Impact of the Incidents
What was the most significant data compromised in an incident ?
Most Significant Data Compromised: The most significant data compromised in an incident were Names, Email Addresses, , Email addresses, Names and .
What was the most significant system affected in an incident ?
Most Significant System Affected: The most significant system affected in an incident was Email system.
Data Breach Information
What was the most sensitive data compromised in a breach ?
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were Email addresses, Email Addresses and Names.
What was the number of records exposed in the most significant breach ?
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 60.0M.
References
What is the most recent source of information about an incident ?
Most Recent Source: The most recent source of information about an incident is Iowa Attorney General's Office.
.png)
Latest Global CVEs (Not Company-Specific)
Description
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.16, 20.3.14, and 21.0.1, there is a XSRF token leakage via protocol-relative URLs in angular HTTP clients. The vulnerability is a Credential Leak by App Logic that leads to the unauthorized disclosure of the Cross-Site Request Forgery (XSRF) token to an attacker-controlled domain. Angular's HttpClient has a built-in XSRF protection mechanism that works by checking if a request URL starts with a protocol (http:// or https://) to determine if it is cross-origin. If the URL starts with protocol-relative URL (//), it is incorrectly treated as a same-origin request, and the XSRF token is automatically added to the X-XSRF-TOKEN header. This issue has been patched in versions 19.2.16, 20.3.14, and 21.0.1. A workaround for this issue involves avoiding using protocol-relative URLs (URLs starting with //) in HttpClient requests. All backend communication URLs should be hardcoded as relative paths (starting with a single /) or fully qualified, trusted absolute URLs.
Risk Information
cvss4
Base: 7.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
- https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f
- https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc
- https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e
- https://github.com/angular/angular/releases/tag/19.2.16
- https://github.com/angular/angular/releases/tag/20.3.14
- https://github.com/angular/angular/releases/tag/21.0.1
- https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Uncontrolled Recursion vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft deep ASN.1 structures that trigger unbounded recursive parsing. This leads to a Denial-of-Service (DoS) via stack exhaustion when parsing untrusted DER inputs. This issue has been patched in version 1.3.2.
Risk Information
cvss4
Base: 8.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Integer Overflow vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft ASN.1 structures containing OIDs with oversized arcs. These arcs may be decoded as smaller, trusted OIDs due to 32-bit bitwise truncation, enabling the bypass of downstream OID-based security decisions. This issue has been patched in version 1.3.2.
Risk Information
cvss4
Base: 6.3
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overflow. Users of Lua rules and output scripts may be affected when working with large buffers. This includes a rule passing a large buffer to a Lua script. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling Lua rules and output scripts, or making sure limits, such as stream.depth.reassembly and HTTP response body limits (response-body-limit), are set to less than half the stack size.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Data Using Our API
Get company history
curl -i -X GET 'https://api.rankiteo.com/underwriter-getcompany-history?linkedin_id=epsilon' -H 'apikey: YOUR_API_KEY_HERE'
RapidWhat Do We Measure ?
Incident
Finding
Grade
Digital Assets
Every week, Rankiteo analyzes billions of signals to give organizations a sharper, faster view of emerging risks. With deeper, more actionable intelligence at their fingertips, security teams can outpace threat actors, respond instantly to Zero-Day attacks, and dramatically shrink their risk exposure window.
These are some of the factors we use to calculate the overall score:
Network Security
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
SBOM (Software Bill of Materials)
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
CMDB (Configuration Management Database)
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Threat Intelligence
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
Rankiteo is a unified scoring and risk platform that analyzes billions of signals weekly to help organizations gain faster, more actionable insights into emerging threats. Empowering teams to outpace adversaries and reduce exposure.
