Yahoo Company Cyber Security Posture
yahooinc.comYahoo serves as a trusted guide for hundreds of millions of people globally, helping them achieve their goals online through our portfolio of iconic products. For advertisers, Yahoo Advertising offers omnichannel solutions and powerful data to engage with our brands and deliver results. To learn more about Yahoo, please visit yahooinc.com.
Yahoo Company Details
yahoo
10497 employees
724260.0
511
Software Development
yahooinc.com
Scan still pending
YAH_4801788
In-progress
Yahoo Risk Score (AI oriented)Between 900 and 1000
This score is AI-generated and less favored by cyber insurers, who prefer the TPRM score.
Yahoo Global Score.png)
Yahoo Company Scoring based on AI Models
| Model Name | Date | Description | Current Score Difference | Score |
|---|---|---|---|---|
| AVERAGE-Industry | 03-12-2025 | This score represents the average cybersecurity rating of companies already scanned within the same industry. It provides a benchmark to compare an individual company's security posture against its industry peers. | N/A | Between 900 and 1000 |
Yahoo Company Cyber Security News & History
| Entity | Type | Severity | Impact | Seen | Url ID | Details | View |
|---|---|---|---|---|---|---|---|
| Yahoo | Breach | 60 | 4 | 02/2017 | YAH11136722 | Link | |
Rankiteo Explanation : Attack with significant impact with customers data leaksDescription: Yahoo suffered from a cyber-attack incident that technically tricked cookies into users' logging account passwords. Yahoo investigated the incident and asked those affected by the attack to log into their accounts without passwords. | |||||||
| Yahoo | Breach | 100 | 5 | 03/2017 | YAH1236722 | Link | |
Rankiteo Explanation : Attack threatening the organization’s existenceDescription: An unauthorised third party gained access to the company's secret code to learn how to fake specific cookies, which allowed the intrusive party to have unrestricted access to almost 32 million user accounts. The compromised information included names, email addresses, telephone numbers, hashed passwords, dates of birth, and, in some cases, encrypted or unencrypted security questions and answers, but payment and bank information remained safe. | |||||||
| Yahoo | Breach | 100 | 5 | 04/2019 | YAH22251222 | Link | |
Rankiteo Explanation : Attack threatening the organization’s existenceDescription: Yahoo is trying to settle a lawsuit on the massive data breach over the period of 2013 to 2016. Yahoo paid $117.5 million for the settlement of 3 billion hacked accounts. In January, Yahoo agreed to pay $50 million to data breach victims but the Judge (Lucy Koh) has rejected Yahoo’s proposed settlement over data breaches. The new settlement includes at least $55 million for victims’ out-of-pocket expenses and other costs, $24 million for two years of credit monitoring, up to $30 million for legal fees, and up to $8.5 million for other expenses, | |||||||
| Yahoo | Breach | 100 | 4 | 01/2014 | YAH228141222 | Link | |
Rankiteo Explanation : Attack with significant impact with customers data leaksDescription: Some of the user accounts of Telecom’s YahooXtrahas had their details compromised, following a security breach, which apparently affected non-Telecom customers as well. Apparently, Yahoo acknowledged an email security breach that compromised some YahooXtra email accounts. | |||||||
| Yahoo | Breach | 60 | 3 | 09/2016 | YAH1045311023 | Link | |
Rankiteo Explanation : Attack with significant impact with internal employee data leaksDescription: The Yahoo suffered from a data breach incident that exposed 500 million user accounts in a data breach dating back to 2014. The account information includes names, email addresses, telephone numbers, dates of birth, hashed passwords and, in some cases, encrypted or unencrypted security questions and answers. According to the current investigation, unencrypted passwords, credit card numbers, and bank account information were not included in the stolen material; these details are not kept in the system that the inquiry has determined to be compromised. Yahoo thinks that information linked to at least 500 million user accounts was taken, based on an ongoing investigation; however, no proof of the state-sponsored actor's presence in Yahoo's network has been discovered. | |||||||
| Yahoo | Breach | 100 | 5 | 10/2014 | YAH203551123 | Link | |
Rankiteo Explanation : Attack threatening the organization’s existenceDescription: A former Yahoo executive claims that between one billion and three billion user accounts could have been impacted by the Yahoo data hack. The Yahoo data breach, according to the experts from the intelligence firm InfoArmor that looked into the event, is the consequence of a cyberattack carried out by cybercriminals who later sold the Yahoo user accounts to a nation-state actor from Eastern Europe. InfoArmor experts verified that the initial hacker to offer the massive data dump for sale is a threat actor going by the handle tessa88; he served as a go-between for the real criminals. A former Yahoo executive, speaking anonymously, claims that the Yahoo architecture collects all user authentication data into a single database. | |||||||
| Yahoo | Breach | 100 | 12/2016 | YAH35131123 | Link | ||
Rankiteo Explanation : Attack threatening the organization's existenceDescription: Hackers breached Yahoo's networks and gained access to one billion user accounts, which included phone numbers, addresses, and easily cracked hashed passwords. The released data also included certain encrypted and cleartext security questions and answers that had also been compromised. The passwords were secured with the easily cracked MD5 hashing method. According to more information about the incident, the hacker sold the enormous data collection on the Dark Web. Unfortunately, the hacker was paid by at least three distinct buyers two of whom were prominent spammers to obtain the complete information, which they most certainly intended to exploit for espionage purposes. | |||||||
Yahoo Company Subsidiaries
Yahoo serves as a trusted guide for hundreds of millions of people globally, helping them achieve their goals online through our portfolio of iconic products. For advertisers, Yahoo Advertising offers omnichannel solutions and powerful data to engage with our brands and deliver results. To learn more about Yahoo, please visit yahooinc.com.
Access Data Using Our API
Get company history
Rapid.png)
Yahoo Cyber Security News
5 stock picks from an analyst for a new era of cybersecurity threats
Tech expert Arnie Bellini lays out his picks for the best cybersecurity stocks to buy for a likely federal cyber defense push.
FTI Consulting Expands Cybersecurity Capabilities in Australia with Appointment of Natasha Passley
Yahoo Finance · FTI Consulting Expands Cybersecurity Capabilities in Australia with Appointment of Natasha Passley.
Cybersecurity ETF (CIBR) Hits New 52-Week High
CIBR hits a 52-week high, fueled by AI-driven demand for cybersecurity and strong momentum signals.
23-Year-Old Cybersecurity Grad Says Her Mom Has $0 Saved For Retirement and Wants Support, But Dave Ramsey Warns It's An 'Emotional Trap'
23-Year-Old Cybersecurity Grad Says Her Mom Has $0 Saved For Retirement and Wants Support, But Dave Ramsey Warns It's An 'Emotional Trap'.
AI Strengthening Cybersecurity Software, ISG Says
Providers are enhancing SIEM platforms with GenAI by automating anomaly detection and responses to threats, the research shows. AI algorithms ...
HUB Cyber Security (Nasdaq: HUBC) Appoints Aviv Eyal to Lead AI-Native Digital Asset Infrastructure Division
Strategic Expansion Anchors HUBC's Platform at the Intersection of Confidential AI, Cybersecurity, and the Decentralized EconomyTEL AVIV, ...
University of West Florida presents cybersecurity program on Capitol Hill
The CyberSkills2Work program is a free program for eligible participants that prepares them for cybersecurity and AI work roles through training ...
Ingram Micro Issues Statement Regarding Cybersecurity Incident
Ingram Micro recently identified ransomware on certain of its internal systems. Promptly after learning of the issue, the Company took steps to ...
3 Top Cybersecurity Stocks to Buy in July
Three of the best cybersecurity stocks you can buy in July are Check Point Software Technologies (NASDAQ: CHKP), International Business Machines ...
Yahoo Similar Companies
Microsoft
Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it
Thomson Reuters
Thomson Reuters is the world’s leading provider of news and information-based tools to professionals. Our worldwide network of journalists and specialist editors keep customers up to speed on global developments, with a particular focus on legal, regulatory and tax changes. Our customers operat
Infor
As a global leader in business cloud software specialized by industry. Infor develops complete solutions for its focus industries, including industrial manufacturing, distribution, healthcare, food & beverage, automotive, aerospace & defense, hospitality, and high tech. Infor’s mission-critical ente
VMware
VMware by Broadcom delivers software that unifies and streamlines hybrid cloud environments for the world’s most complex organizations. By combining public-cloud scale and agility with private-cloud security and performance, we empower our customers to modernize, optimize and protect their apps an
Groupon
Groupon is an experiences marketplace that brings people more ways to get the most out of their city or wherever they may be. By enabling real-time mobile commerce across local businesses, live events and travel destinations, Groupon helps people find and discover experiences––big and small, new and
Alibaba Group
Alibaba Group’s mission is to make it easy to do business anywhere. The company aims to build the future infrastructure of commerce. It envisions its customers will meet, work and live at Alibaba and that it will be a good company lasting for 102 years. We pledged to reach carbon neutrality by 2030
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
Yahoo CyberSecurity History Information
How many cyber incidents has Yahoo faced?
Total Incidents: According to Rankiteo, Yahoo has faced 7 incidents in the past.
What types of cybersecurity incidents have occurred at Yahoo?
Incident Types: The types of cybersecurity incidents that have occurred incidents Breach.
What was the total financial impact of these incidents on Yahoo?
Total Financial Loss: The total financial loss from these incidents is estimated to be $0.
How does Yahoo detect and respond to cybersecurity incidents?
Detection and Response: The company detects and responds to cybersecurity incidents through communication strategy with Yahoo asked affected users to log into their accounts without passwords..
Incident Details
Can you provide details on each incident?
Incident : Data Breach
Title: Yahoo Data Breach
Description: Hackers breached Yahoo's networks and gained access to one billion user accounts, which included phone numbers, addresses, and easily cracked hashed passwords. The released data also included certain encrypted and cleartext security questions and answers that had also been compromised. The passwords were secured with the easily cracked MD5 hashing method. The hacker sold the enormous data collection on the Dark Web. Unfortunately, the hacker was paid by at least three distinct buyers two of whom were prominent spammers to obtain the complete information, which they most certainly intended to exploit for espionage purposes.
Type: Data Breach
Attack Vector: Network Breach
Threat Actor: Hackers
Motivation: Espionage
Incident : Data Breach
Title: Yahoo Data Breach
Description: A former Yahoo executive claims that between one billion and three billion user accounts could have been impacted by the Yahoo data hack. The Yahoo data breach, according to the experts from the intelligence firm InfoArmor that looked into the event, is the consequence of a cyberattack carried out by cybercriminals who later sold the Yahoo user accounts to a nation-state actor from Eastern Europe. InfoArmor experts verified that the initial hacker to offer the massive data dump for sale is a threat actor going by the handle tessa88; he served as a go-between for the real criminals. A former Yahoo executive, speaking anonymously, claims that the Yahoo architecture collects all user authentication data into a single database.
Type: Data Breach
Threat Actor: tessa88, nation-state actor from Eastern Europe
Motivation: Financial gain and espionage
Incident : Data Breach
Title: Yahoo Data Breach
Description: The Yahoo suffered from a data breach incident that exposed 500 million user accounts in a data breach dating back to 2014. The account information includes names, email addresses, telephone numbers, dates of birth, hashed passwords and, in some cases, encrypted or unencrypted security questions and answers. Unencrypted passwords, credit card numbers, and bank account information were not included in the stolen material; these details are not kept in the system that the inquiry has determined to be compromised. Yahoo thinks that information linked to at least 500 million user accounts was taken, based on an ongoing investigation; however, no proof of the state-sponsored actor's presence in Yahoo's network has been discovered.
Date Detected: 2014
Type: Data Breach
Incident : Data Breach
Title: YahooXtra Email Security Breach
Description: Some of the user accounts of Telecom’s YahooXtrahad their details compromised, following a security breach, which apparently affected non-Telecom customers as well. Yahoo acknowledged an email security breach that compromised some YahooXtra email accounts.
Type: Data Breach
Incident : Data Breach
Title: Yahoo Data Breach Settlement
Description: Yahoo is trying to settle a lawsuit on the massive data breach over the period of 2013 to 2016.
Type: Data Breach
Incident : Data Breach
Title: Unauthorized Access to User Accounts
Description: An unauthorised third party gained access to the company's secret code to learn how to fake specific cookies, which allowed the intrusive party to have unrestricted access to almost 32 million user accounts. The compromised information included names, email addresses, telephone numbers, hashed passwords, dates of birth, and, in some cases, encrypted or unencrypted security questions and answers, but payment and bank information remained safe.
Type: Data Breach
Attack Vector: Cookie Manipulation
Vulnerability Exploited: Stolen secret code for cookie generation
Incident : Cyber Attack
Title: Yahoo Cyber Attack Incident
Description: Yahoo suffered from a cyber-attack incident that technically tricked cookies into users' logging account passwords. Yahoo investigated the incident and asked those affected by the attack to log into their accounts without passwords.
Type: Cyber Attack
Attack Vector: Cookie Manipulation
Vulnerability Exploited: Web Application Vulnerability
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 YAH35131123
Data Compromised: phone numbers, addresses, hashed passwords, security questions and answers
Incident : Data Breach YAH203551123
Data Compromised: User authentication data
Incident : Data Breach YAH1045311023
Data Compromised: names, email addresses, telephone numbers, dates of birth, hashed passwords, encrypted or unencrypted security questions and answers
Incident : Data Breach YAH228141222
Data Compromised: Email account details
Incident : Data Breach YAH22251222
Financial Loss: ['117.5 million', '50 million', '55 million', '24 million', '30 million', '8.5 million']
Data Compromised: 3 billion accounts
Incident : Data Breach YAH1236722
Data Compromised: Names, Email addresses, Telephone numbers, Hashed passwords, Dates of birth, Encrypted or unencrypted security questions and answers
What is the average financial loss per incident?
Average Financial Loss: The average financial loss per incident is $0.00.
What types of data are most commonly compromised in incidents?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are phone numbers, addresses, hashed passwords, security questions and answers, User authentication data, names, email addresses, telephone numbers, dates of birth, hashed passwords, encrypted or unencrypted security questions and answers, Email account details, Names, Email addresses, Telephone numbers, Hashed passwords, Dates of birth and Encrypted or unencrypted security questions and answers.
Which entities were affected by each incident?
Incident : Data Breach YAH35131123
Entity Type: Company
Industry: Technology
Location: Global
Size: Large
Customers Affected: One billion
Incident : Data Breach YAH203551123
Entity Type: Company
Industry: Technology
Customers Affected: one billion to three billion
Incident : Data Breach YAH1045311023
Entity Type: Company
Industry: Technology
Customers Affected: 500000000
Incident : Data Breach YAH22251222
Entity Type: Company
Industry: Technology
Customers Affected: 3 billion
Incident : Data Breach YAH1236722
Customers Affected: 32 million
Response to the Incidents
What measures were taken in response to each incident?
Incident : Cyber Attack YAH11136722
Communication Strategy: Yahoo asked affected users to log into their accounts without passwords.
Data Breach Information
What type of data was compromised in each breach?
Incident : Data Breach YAH35131123
Type of Data Compromised: phone numbers, addresses, hashed passwords, security questions and answers
Number of Records Exposed: One billion
Sensitivity of Data: High
Data Exfiltration: Yes
Data Encryption: MD5 hashing
Personally Identifiable Information: Yes
Incident : Data Breach YAH203551123
Type of Data Compromised: User authentication data
Number of Records Exposed: one billion to three billion
Incident : Data Breach YAH1045311023
Type of Data Compromised: names, email addresses, telephone numbers, dates of birth, hashed passwords, encrypted or unencrypted security questions and answers
Number of Records Exposed: 500000000
Personally Identifiable Information: True
Incident : Data Breach YAH228141222
Type of Data Compromised: Email account details
Incident : Data Breach YAH22251222
Number of Records Exposed: 3 billion
Incident : Data Breach YAH1236722
Type of Data Compromised: Names, Email addresses, Telephone numbers, Hashed passwords, Dates of birth, Encrypted or unencrypted security questions and answers
Number of Records Exposed: 32 million
Personally Identifiable Information: True
Regulatory Compliance
Were there any regulatory violations and fines imposed for each incident?
Incident : Data Breach YAH22251222
Legal Actions: Settlement agreed
How does the company ensure compliance with regulatory requirements?
Ensuring Regulatory Compliance: The company ensures compliance with regulatory requirements through Settlement agreed.
Investigation Status
What is the current status of the investigation for each incident?
Incident : Data Breach YAH1045311023
Investigation Status: Ongoing
How does the company communicate the status of incident investigations to stakeholders?
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through was Yahoo asked affected users to log into their accounts without passwords..
Initial Access Broker
How did the initial access broker gain entry for each incident?
Incident : Data Breach YAH35131123
Additional Questions
General Information
Who was the attacking group in the last incident?
Last Attacking Group: The attacking group in the last incident were an Hackers, tessa88 and nation-state actor from Eastern Europe.
Incident Details
What was the most recent incident detected?
Most Recent Incident Detected: The most recent incident detected was on 2014.
Impact of the Incidents
What was the highest financial loss from an incident?
Highest Financial Loss: The highest financial loss from an incident was ['117.5 million', '50 million', '55 million', '24 million', '30 million', '8.5 million'].
What was the most significant data compromised in an incident?
Most Significant Data Compromised: The most significant data compromised in an incident were phone numbers, addresses, hashed passwords, security questions and answers, User authentication data, names, email addresses, telephone numbers, dates of birth, hashed passwords, encrypted or unencrypted security questions and answers, Email account details, 3 billion accounts, Names, Email addresses, Telephone numbers, Hashed passwords, Dates of birth and Encrypted or unencrypted security questions and answers.
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 phone numbers, addresses, hashed passwords, security questions and answers, User authentication data, names, email addresses, telephone numbers, dates of birth, hashed passwords, encrypted or unencrypted security questions and answers, Email account details, 3 billion accounts, Names, Email addresses, Telephone numbers, Hashed passwords, Dates of birth and Encrypted or unencrypted security questions and answers.
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 3.0B.
Regulatory Compliance
What was the most significant legal action taken for a regulatory violation?
Most Significant Legal Action: The most significant legal action taken for a regulatory violation was Settlement agreed.
Investigation Status
What is the current status of the most recent investigation?
Current Status of Most Recent Investigation: The current status of the most recent investigation is Ongoing.
What Do We Measure?
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:
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
