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Data Breach Notifications
Entity Information
Type of Organization: Financial Services
Entity Name: Coinbase, Inc.
Street Address: 248 3rd Street #434
City: Oakland
State, or Country if outside the US: CA
Zip Code: 94607
Submitted By
Name: Michael Rubin
Title: Attorney
Firm name (if different than entity): Latham and Watkins LLP
Telephone Number: (415) 395-8154
Email Address: michael.rubin@lw.com
Relationship to entity whose information was compromised: Outside Counsel
Breach Information
Total number of persons affected (including residents): 69461
Total number of Maine residents affected: Approximately 217
If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified:
Date(s) Breach Occured: December 26, 2024
Date Breach Discovered: May 11, 2025
Description of the Breach:
Insider wrongdoing
Information Acquired - Name or other personal identifier in combination with:
Notification and Protection Services
Type of Notification: Written
Date(s) of consumer notification: May 30, 2025
Copy of notice to affected Maine residents: Appendix_A_-_Coinbase_Template_Individual_Notification_Letter.pdf
Date of any previous (within 12 months) breach notifications: 07/16/2024
Were identity theft protection services offered: Yes
If yes, please provide the duration, the provider of the service and a brief description of the service: We are offering all impacted
Data Breach Notifications Entity Information Type of Organization: Financial Services Entity Name: Coinbase, Inc. Street Address: 248 3rd Street #434 City: Oakland State, or Country if outside the US: CA Zip Code: 94607 Submitted By Name: Michael Rubin Title: Attorney Firm name (if different than entity): Latham and Watkins LLP Telephone Number: (415) 395-8154 Email Address: michael.rubin@lw.com Relationship to entity whose information was compromised: Outside Counsel Breach Information Total number of persons affected (including residents): 69461 Total number of Maine residents affected: Approximately 217 If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified: Date(s) Breach Occured: December 26, 2024 Date Breach Discovered: May 11, 2025 Description of the Breach: Insider wrongdoing Information Acquired - Name or other personal identifier in combination with: Notification and Protection Services Type of Notification: Written Date(s) of consumer notification: May 30, 2025 Copy of notice to affected Maine residents: Appendix_A_-_Coinbase_Template_Individual_Notification_Letter.pdf Date of any previous (within 12 months) breach notifications: 07/16/2024 Were identity theft protection services offered: Yes If yes, please provide the duration, the provider of the service and a brief description of the service: We are offering all impacted
Data Breach Notifications
Entity Information
Type of Organization: Financial Services
Entity Name: Coinbase, Inc.
Street Address: 248 3rd Street #434
City: Oakland
State, or Country if outside the US: CA
Zip Code: 94607
Submitted By
Name: Michael Rubin
Title: Attorney
Firm name (if different than entity): Latham and Watkins LLP
Telephone Number: (415) 395-8154
Email Address: michael.rubin@lw.com
Relationship to entity whose information was compromised: Outside Counsel
Breach Information
Total number of persons affected (including residents): 69461
Total number of Maine residents affected: Approximately 217
If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified:
Date(s) Breach Occured: December 26, 2024
Date Breach Discovered: May 11, 2025
Description of the Breach:
Insider wrongdoing
Information Acquired - Name or other personal identifier in combination with:
Notification and Protection Services
Type of Notification: Written
Date(s) of consumer notification: May 30, 2025
Copy of notice to affected Maine residents: Appendix_A_-_Coinbase_Template_Individual_Notification_Letter.pdf
Date of any previous (within 12 months) breach notifications: 07/16/2024
Were identity theft protection services offered: Yes
If yes, please provide the duration, the provider of the service and a brief description of the service: We are offering all impacted
Data Breach Notifications Entity Information Type of Organization: Financial Services Entity Name: Coinbase, Inc. Street Address: 248 3rd Street #434 City: Oakland State, or Country if outside the US: CA Zip Code: 94607 Submitted By Name: Michael Rubin Title: Attorney Firm name (if different than entity): Latham and Watkins LLP Telephone Number: (415) 395-8154 Email Address: michael.rubin@lw.com Relationship to entity whose information was compromised: Outside Counsel Breach Information Total number of persons affected (including residents): 69461 Total number of Maine residents affected: Approximately 217 If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified: Date(s) Breach Occured: December 26, 2024 Date Breach Discovered: May 11, 2025 Description of the Breach: Insider wrongdoing Information Acquired - Name or other personal identifier in combination with: Notification and Protection Services Type of Notification: Written Date(s) of consumer notification: May 30, 2025 Copy of notice to affected Maine residents: Appendix_A_-_Coinbase_Template_Individual_Notification_Letter.pdf Date of any previous (within 12 months) breach notifications: 07/16/2024 Were identity theft protection services offered: Yes If yes, please provide the duration, the provider of the service and a brief description of the service: We are offering all impacted
At least five lawsuits have been filed against Coinbase since the breach disclosure.5 However, an incredibly conveniently timed update to Coinbase’s customer terms, announced on April 12 and applying to disputes filed after May 15, may make it more challenging for these cases to succeed. While Coinbase’s customer terms previously contained some text seeking to limit class action lawsuits and force customers into arbitration, the update made some key changes, most significantly aiming to force lawsuits to be filed in New York. The new version also expands clauses limiting collective litigation, mass arbitration, and sharing of information between separate parties involved in arbitration proceedings against Coinbase. It also aims to force any claims that do proceed in court rather than arbitration to go to a bench trial instead of a trial by jury, reduces thresholds triggering batch arbitration, and much more prominently highlights the “Class, Collective, Representative, and Mass Action Waiver and Jury Trial Waiver”.

Of the five lawsuits filed against Coinbase for the data breach thus far, all are class actions, none were filed before May 15, and two were filed outside of New York.
At least five lawsuits have been filed against Coinbase since the breach disclosure.5 However, an incredibly conveniently timed update to Coinbase’s customer terms, announced on April 12 and applying to disputes filed after May 15, may make it more challenging for these cases to succeed. While Coinbase’s customer terms previously contained some text seeking to limit class action lawsuits and force customers into arbitration, the update made some key changes, most significantly aiming to force lawsuits to be filed in New York. The new version also expands clauses limiting collective litigation, mass arbitration, and sharing of information between separate parties involved in arbitration proceedings against Coinbase. It also aims to force any claims that do proceed in court rather than arbitration to go to a bench trial instead of a trial by jury, reduces thresholds triggering batch arbitration, and much more prominently highlights the “Class, Collective, Representative, and Mass Action Waiver and Jury Trial Waiver”. Of the five lawsuits filed against Coinbase for the data breach thus far, all are class actions, none were filed before May 15, and two were filed outside of New York.
According to Coinbase, the data thieves bribed some members of Coinbase’s poorly paid offshore customer support team, who they described as “rogue overseas support agents”, who are reportedly earning less than $5,000 annually.2 Coinbase’s cybersecurity disclosure filing with the SEC admitted that they had been grappling with this issue for months: “The threat actor appears to have obtained this information by paying multiple contractors or employees working in support roles outside the United States to collect information from internal Coinbase systems to which they had access in order to perform their job responsibilities. These instances of such personnel accessing data without business need were independently detected by the Company’s security monitoring in the previous months.”3 Bloomberg later reported that “the hackers did have near-constant access to some of Coinbase Global Inc.’s most valuable customer data since January”, citing an anonymous source familiar with the incident.4
According to Coinbase, the data thieves bribed some members of Coinbase’s poorly paid offshore customer support team, who they described as “rogue overseas support agents”, who are reportedly earning less than $5,000 annually.2 Coinbase’s cybersecurity disclosure filing with the SEC admitted that they had been grappling with this issue for months: “The threat actor appears to have obtained this information by paying multiple contractors or employees working in support roles outside the United States to collect information from internal Coinbase systems to which they had access in order to perform their job responsibilities. These instances of such personnel accessing data without business need were independently detected by the Company’s security monitoring in the previous months.”3 Bloomberg later reported that “the hackers did have near-constant access to some of Coinbase Global Inc.’s most valuable customer data since January”, citing an anonymous source familiar with the incident.4
Coinbase
On May 12, Coinbase announced it will join the S&P 500 as its “first and only crypto company”.1a This is the latest change that may see more American investors inadvertently exposed to the cryptocurrency industry via index funds, following MicroStrategy’s entry into the NASDAQ-100 in December 2024 [I72].

Their joy was likely tempered when, only two days later on May 14, they had to announce a data breach that exposed customer data including names, addresses, phone numbers, email addresses, images of government ID documents, account balance and transaction data, and masked social security and bank account numbers. Although leaks like this typically lead to an uptick in phishing attempts, where scammers use the private information to contact customers and more convincingly impersonate Coinbase employees, the leak of account balance data and customer addresses is also particularly concerning given the recent spike in violent attacks and kidnappings targeting wealthy crypto holders.

Crypto security researchers have been warning for months about Coinbase’s evidently poor security practices and lack of attention to customer complaints, and describing hacks in which victims reported being scammed by attackers who seemed to have access to private Coinbase data [I76]. In February, zachxbt wrote: “Coinbase needs to urgently make changes as more and more users are being scammed for tens of millions every month. ... Coinbase is in a position where they have the power to make
Coinbase On May 12, Coinbase announced it will join the S&P 500 as its “first and only crypto company”.1a This is the latest change that may see more American investors inadvertently exposed to the cryptocurrency industry via index funds, following MicroStrategy’s entry into the NASDAQ-100 in December 2024 [I72]. Their joy was likely tempered when, only two days later on May 14, they had to announce a data breach that exposed customer data including names, addresses, phone numbers, email addresses, images of government ID documents, account balance and transaction data, and masked social security and bank account numbers. Although leaks like this typically lead to an uptick in phishing attempts, where scammers use the private information to contact customers and more convincingly impersonate Coinbase employees, the leak of account balance data and customer addresses is also particularly concerning given the recent spike in violent attacks and kidnappings targeting wealthy crypto holders. Crypto security researchers have been warning for months about Coinbase’s evidently poor security practices and lack of attention to customer complaints, and describing hacks in which victims reported being scammed by attackers who seemed to have access to private Coinbase data [I76]. In February, zachxbt wrote: “Coinbase needs to urgently make changes as more and more users are being scammed for tens of millions every month. ... Coinbase is in a position where they have the power to make
Tweet by Brian Armstrong: We started notifying users about this on April 11th, so it had nothing to do with the data breach. You’re giving us far too much credit in your conspiracy theory. The class action waiver has always been in our arbitration agreement btw, so this change (amongst many others) just made the user terms consistent.
2:41 PM · May 20, 2025

Reply by Molly White: It did more than “make the user terms consistent” — the clause forcing litigation in New York is entirely new, for example.
Screenshot of text: "While Coinbase’s customer terms previously contained some text seeking to limit class action lawsuits and force customers into arbitration, the update made some key changes, most significantly aiming to force lawsuits to be filed in New York. The new version also expands clauses limiting collective litigation, mass arbitration, and sharing of information between separate parties involved in arbitration proceedings against Coinbase. It also aims to force any claims that do proceed in court rather than arbitration to go to a bench trial instead of a trial by jury, reduces thresholds triggering batch arbitration, and much more prominently highlights the 'Class, Collective, Representative, and Mass Action Waiver and Jury Trial Waiver'."

Reply by Molly White: And if you knew about the data breach as far back as at least April 11 (or much further, according to outside reporting from Bloomberg), why did it take you another month to disclose with the SEC?
Tweet by Brian Armstrong: We started notifying users about this on April 11th, so it had nothing to do with the data breach. You’re giving us far too much credit in your conspiracy theory. The class action waiver has always been in our arbitration agreement btw, so this change (amongst many others) just made the user terms consistent. 2:41 PM · May 20, 2025 Reply by Molly White: It did more than “make the user terms consistent” — the clause forcing litigation in New York is entirely new, for example. Screenshot of text: "While Coinbase’s customer terms previously contained some text seeking to limit class action lawsuits and force customers into arbitration, the update made some key changes, most significantly aiming to force lawsuits to be filed in New York. The new version also expands clauses limiting collective litigation, mass arbitration, and sharing of information between separate parties involved in arbitration proceedings against Coinbase. It also aims to force any claims that do proceed in court rather than arbitration to go to a bench trial instead of a trial by jury, reduces thresholds triggering batch arbitration, and much more prominently highlights the 'Class, Collective, Representative, and Mass Action Waiver and Jury Trial Waiver'." Reply by Molly White: And if you knew about the data breach as far back as at least April 11 (or much further, according to outside reporting from Bloomberg), why did it take you another month to disclose with the SEC?
Coinbase CEO Brian Armstrong responded to my reporting on this timing to describe it as a “conspiracy theory”, claiming that customers were being notified before the user agreement change, and that the change merely “made the user terms consistent”.6

He did not immediately respond to a clarification that the change was much more substantial than he described, including the entirely new forum clause. He also did not respond to a question asking why it took Coinbase more than a month to disclose the breach to the SEC (per his admission; more, if Bloomberg’s reporting is accurate), when such disclosures are required within four business days of companies discovering material cybersecurity incidents.7
Coinbase CEO Brian Armstrong responded to my reporting on this timing to describe it as a “conspiracy theory”, claiming that customers were being notified before the user agreement change, and that the change merely “made the user terms consistent”.6 He did not immediately respond to a clarification that the change was much more substantial than he described, including the entirely new forum clause. He also did not respond to a question asking why it took Coinbase more than a month to disclose the breach to the SEC (per his admission; more, if Bloomberg’s reporting is accurate), when such disclosures are required within four business days of companies discovering material cybersecurity incidents.7
At least five lawsuits have been filed against Coinbase since the breach disclosure.5 However, an incredibly conveniently timed update to Coinbase’s customer terms, announced on April 12 and applying to disputes filed after May 15, may make it more challenging for these cases to succeed. While Coinbase’s customer terms previously contained some text seeking to limit class action lawsuits and force customers into arbitration, the update made some key changes, most significantly aiming to force lawsuits to be filed in New York. The new version also expands clauses limiting collective litigation, mass arbitration, and sharing of information between separate parties involved in arbitration proceedings against Coinbase. It also aims to force any claims that do proceed in court rather than arbitration to go to a bench trial instead of a trial by jury, reduces thresholds triggering batch arbitration, and much more prominently highlights the “Class, Collective, Representative, and Mass Action Waiver and Jury Trial Waiver”.

Of the five lawsuits filed against Coinbase for the data breach thus far, all are class actions, none were filed before May 15, and two were filed outside of New York.
At least five lawsuits have been filed against Coinbase since the breach disclosure.5 However, an incredibly conveniently timed update to Coinbase’s customer terms, announced on April 12 and applying to disputes filed after May 15, may make it more challenging for these cases to succeed. While Coinbase’s customer terms previously contained some text seeking to limit class action lawsuits and force customers into arbitration, the update made some key changes, most significantly aiming to force lawsuits to be filed in New York. The new version also expands clauses limiting collective litigation, mass arbitration, and sharing of information between separate parties involved in arbitration proceedings against Coinbase. It also aims to force any claims that do proceed in court rather than arbitration to go to a bench trial instead of a trial by jury, reduces thresholds triggering batch arbitration, and much more prominently highlights the “Class, Collective, Representative, and Mass Action Waiver and Jury Trial Waiver”. Of the five lawsuits filed against Coinbase for the data breach thus far, all are class actions, none were filed before May 15, and two were filed outside of New York.
According to Coinbase, the data thieves bribed some members of Coinbase’s poorly paid offshore customer support team, who they described as “rogue overseas support agents”, who are reportedly earning less than $5,000 annually.2 Coinbase’s cybersecurity disclosure filing with the SEC admitted that they had been grappling with this issue for months: “The threat actor appears to have obtained this information by paying multiple contractors or employees working in support roles outside the United States to collect information from internal Coinbase systems to which they had access in order to perform their job responsibilities. These instances of such personnel accessing data without business need were independently detected by the Company’s security monitoring in the previous months.”3 Bloomberg later reported that “the hackers did have near-constant access to some of Coinbase Global Inc.’s most valuable customer data since January”, citing an anonymous source familiar with the incident.4
According to Coinbase, the data thieves bribed some members of Coinbase’s poorly paid offshore customer support team, who they described as “rogue overseas support agents”, who are reportedly earning less than $5,000 annually.2 Coinbase’s cybersecurity disclosure filing with the SEC admitted that they had been grappling with this issue for months: “The threat actor appears to have obtained this information by paying multiple contractors or employees working in support roles outside the United States to collect information from internal Coinbase systems to which they had access in order to perform their job responsibilities. These instances of such personnel accessing data without business need were independently detected by the Company’s security monitoring in the previous months.”3 Bloomberg later reported that “the hackers did have near-constant access to some of Coinbase Global Inc.’s most valuable customer data since January”, citing an anonymous source familiar with the incident.4
Coinbase
On May 12, Coinbase announced it will join the S&P 500 as its “first and only crypto company”.1a This is the latest change that may see more American investors inadvertently exposed to the cryptocurrency industry via index funds, following MicroStrategy’s entry into the NASDAQ-100 in December 2024 [I72].

Their joy was likely tempered when, only two days later on May 14, they had to announce a data breach that exposed customer data including names, addresses, phone numbers, email addresses, images of government ID documents, account balance and transaction data, and masked social security and bank account numbers. Although leaks like this typically lead to an uptick in phishing attempts, where scammers use the private information to contact customers and more convincingly impersonate Coinbase employees, the leak of account balance data and customer addresses is also particularly concerning given the recent spike in violent attacks and kidnappings targeting wealthy crypto holders.

Crypto security researchers have been warning for months about Coinbase’s evidently poor security practices and lack of attention to customer complaints, and describing hacks in which victims reported being scammed by attackers who seemed to have access to private Coinbase data [I76]. In February, zachxbt wrote: “Coinbase needs to urgently make changes as more and more users are being scammed for tens of millions every month. ... Coinbase is in a position where they have the power to make
Coinbase On May 12, Coinbase announced it will join the S&P 500 as its “first and only crypto company”.1a This is the latest change that may see more American investors inadvertently exposed to the cryptocurrency industry via index funds, following MicroStrategy’s entry into the NASDAQ-100 in December 2024 [I72]. Their joy was likely tempered when, only two days later on May 14, they had to announce a data breach that exposed customer data including names, addresses, phone numbers, email addresses, images of government ID documents, account balance and transaction data, and masked social security and bank account numbers. Although leaks like this typically lead to an uptick in phishing attempts, where scammers use the private information to contact customers and more convincingly impersonate Coinbase employees, the leak of account balance data and customer addresses is also particularly concerning given the recent spike in violent attacks and kidnappings targeting wealthy crypto holders. Crypto security researchers have been warning for months about Coinbase’s evidently poor security practices and lack of attention to customer complaints, and describing hacks in which victims reported being scammed by attackers who seemed to have access to private Coinbase data [I76]. In February, zachxbt wrote: “Coinbase needs to urgently make changes as more and more users are being scammed for tens of millions every month. ... Coinbase is in a position where they have the power to make