Company Details
taxslayerllc
319
3,276
5112
taxslayer.com
0
TAX_1107316
In-progress


TaxSlayer Company CyberSecurity Posture
taxslayer.comFor 60 years, TaxSlayer has been empowering Americans to take control of their taxes with easy-to-use, reliable software backed by U.S.-based support. Whether you're filing a simple return or managing self-employed income, TaxSlayer empowers you with the tools to file confidently and get your maximum refund guaranteed. As a team of customer-focused innovators and problem-solvers, TaxSlayer employees enjoy a dynamic workplace with comprehensive benefits including healthcare, dental, vision, 401(k), professional development, and even a child college fund. Interested? Apply today!
Company Details
taxslayerllc
319
3,276
5112
taxslayer.com
0
TAX_1107316
In-progress
Between 700 and 749

TaxSlayer Global Score (TPRM)XXXX

Description: The California Office of the Attorney General disclosed that TaxSlayer, a tax preparation service provider, suffered a data breach between October 10, 2015, and December 21, 2015, where an unauthorized third party gained access to user accounts. The incident exposed sensitive personal information, including names, addresses, and Social Security numbers (SSNs) of affected users. The breach was officially reported on January 29, 2016, though the exact number of impacted individuals was not specified in the announcement. The compromised data poses significant risks, such as identity theft, financial fraud, and long-term reputational harm to the company. Given the nature of the exposed information particularly SSNs victims may face prolonged vulnerabilities, including tax-related fraud and unauthorized credit applications. TaxSlayer likely faced regulatory scrutiny and potential legal repercussions due to the failure to protect customer data during the prolonged exposure period.
Description: TaxSlayer, a tax preparation software publisher suffered by a data breach that affacted approximately 9,000 customers. The compromised data included the customers’ phone numbers, accounts address, social security number and other data containing 2014 tax return. TaxSlayer offered one year of free credit monitoring to all the affected customers.


No incidents recorded for TaxSlayer in 2026.
No incidents recorded for TaxSlayer in 2026.
No incidents recorded for TaxSlayer in 2026.
TaxSlayer cyber incidents detection timeline including parent company and subsidiaries

For 60 years, TaxSlayer has been empowering Americans to take control of their taxes with easy-to-use, reliable software backed by U.S.-based support. Whether you're filing a simple return or managing self-employed income, TaxSlayer empowers you with the tools to file confidently and get your maximum refund guaranteed. As a team of customer-focused innovators and problem-solvers, TaxSlayer employees enjoy a dynamic workplace with comprehensive benefits including healthcare, dental, vision, 401(k), professional development, and even a child college fund. Interested? Apply today!

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TaxSlayer and Party Land launch File Fearlessly with Calvin Culator, using humor to simplify tax filing and build brand personality.
The new funds will support Dazz's aim to help security and engineering teams reduce exposure efficiently and accelerate the company's...
TaxSlayer was one of a number of online tax prep outfits that were targeted in 2015 by cybercriminals using "list validation" attacks.
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Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of TaxSlayer is https://www.taxslayer.com/.
According to Rankiteo, TaxSlayer’s AI-generated cybersecurity score is 745, reflecting their Moderate security posture.
According to Rankiteo, TaxSlayer currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, TaxSlayer has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.
According to Rankiteo, TaxSlayer is not certified under SOC 2 Type 1.
According to Rankiteo, TaxSlayer does not hold a SOC 2 Type 2 certification.
According to Rankiteo, TaxSlayer is not listed as GDPR compliant.
According to Rankiteo, TaxSlayer does not currently maintain PCI DSS compliance.
According to Rankiteo, TaxSlayer is not compliant with HIPAA regulations.
According to Rankiteo,TaxSlayer is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
TaxSlayer operates primarily in the Software Development industry.
TaxSlayer employs approximately 319 people worldwide.
TaxSlayer presently has no subsidiaries across any sectors.
TaxSlayer’s official LinkedIn profile has approximately 3,276 followers.
TaxSlayer is classified under the NAICS code 5112, which corresponds to Software Publishers.
Yes, TaxSlayer has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/taxslayer.
Yes, TaxSlayer maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/taxslayerllc.
As of January 24, 2026, Rankiteo reports that TaxSlayer has experienced 2 cybersecurity incidents.
TaxSlayer has an estimated 28,180 peer or competitor companies worldwide.
Incident Types: The types of cybersecurity incidents that have occurred include Breach.
Detection and Response: The company detects and responds to cybersecurity incidents through an communication strategy with public disclosure via california office of the attorney general..
Title: TaxSlayer Data Breach
Description: TaxSlayer, a tax preparation software publisher, suffered a data breach that affected approximately 9,000 customers. The compromised data included the customers’ phone numbers, account addresses, social security numbers, and other data from 2014 tax returns. TaxSlayer offered one year of free credit monitoring to all the affected customers.
Type: Data Breach
Title: TaxSlayer Data Breach (2015)
Description: The California Office of the Attorney General reported that TaxSlayer experienced a data breach in which an unauthorized third party may have accessed user accounts between October 10, 2015, and December 21, 2015. The breach potentially compromised users' personal information, including names, addresses, and Social Security numbers.
Date Publicly Disclosed: 2016-01-29
Type: Data Breach
Threat Actor: Unauthorized third party
Common Attack Types: The most common types of attacks the company has faced is Breach.

Data Compromised: Phone numbers, Account addresses, Social security numbers, 2014 tax return data

Data Compromised: Names, Addresses, Social security numbers
Identity Theft Risk: High (SSNs compromised)
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Phone Numbers, Account Addresses, Social Security Numbers, 2014 Tax Return Data, , Personal Identifiable Information (Pii) and .

Entity Name: TaxSlayer
Entity Type: Company
Industry: Tax Preparation Software
Customers Affected: 9000

Entity Name: TaxSlayer
Entity Type: Company
Industry: Tax Preparation Software
Location: United States (primarily California users reported)

Communication Strategy: Public disclosure via California Office of the Attorney General

Type of Data Compromised: Phone numbers, Account addresses, Social security numbers, 2014 tax return data
Number of Records Exposed: 9000
Sensitivity of Data: High

Type of Data Compromised: Personal identifiable information (pii)
Sensitivity of Data: High
Data Exfiltration: Possible
Personally Identifiable Information: namesaddressesSocial Security numbers

Regulatory Notifications: California Office of the Attorney General

Source: California Office of the Attorney General
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: California Office of the Attorney General.
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through Public disclosure via California Office of the Attorney General.
Last Attacking Group: The attacking group in the last incident was an Unauthorized third party.
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2016-01-29.
Most Significant Data Compromised: The most significant data compromised in an incident were phone numbers, account addresses, social security numbers, 2014 tax return data, , names, addresses, Social Security numbers and .
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were Social Security numbers, 2014 tax return data, phone numbers, account addresses, social security numbers, names and addresses.
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 900.0.
Most Recent Source: The most recent source of information about an incident is California Office of the Attorney General.
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