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Discover

Discover Vendor Cyber Rating & Cyber Score

discover.com

Discover® is now part of Capital One. Together, we’ll continue to deliver exceptional financial products and experiences, drive innovation, and serve customers. Find the latest updates at https://capitalonediscover.com. Discover is one of the most recognized brands in the U.S. with the Discover® card, America's cash rewards pioneer, and offers personal loans, home loans, checking and savings accounts and certificates of deposit. The Discover Global Network® is comprised of Discover Network, with millions of merchants and cash access locations; PULSE®, one of the nation's leading ATM/debit networks; and Diners Club International®, a global payments network with acceptance around the world.


Discover A.I CyberSecurity Scoring

Discover
Company Information
Website:http://www.discover.com
Employees number:19,187
Number of followers:235,726
NAICS:52
Industry Type:Financial Services
Homepage:discover.com
Discover Risk Score (AI oriented)
Between 600 and 649
logo
DiscoverFinancial Services
Updated:
01/04/2026
604/1000
Poor
Caa
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
Insurance prefers TPRM score to calculate premium
Discover Global Score (TPRM)
xxxx
logo
DiscoverFinancial Services
•••
Score locked
Instant access to detailed risk factors
Vulnerabilities
Benchmark vs. industry & size peers
Findings

Discover
DiscoverPoor
Current Score
604Caa (POOR)
01000
34 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JUNE 2026
612Before Incident
MAY 2026
610Before Incident
APRIL 2026
607Before Incident
MARCH 2026
602Before Incident
FEBRUARY 2026
601Before Incident
JANUARY 2026
598Before Incident
DECEMBER 2025
594Before Incident
NOVEMBER 2025
590Before Incident
OCTOBER 2025
587Before Incident
SEPTEMBER 2025
583Before Incident
AUGUST 2025
579Before Incident
JULY 2025
575Before Incident
SEPTEMBER 2020
208Before Incident
Breach
29 Sep 2020Discover
Discover Financial Services

Discover Financial Services Data Breach

143After Incident
MEDIUM-65
DIS631072825
The Maine Office of the Attorney General reported that Discover Financial Services experienced a data breach due to an inadvertent disclosure, affecting 690 individuals, with 2 residents specifically impacted. The breach occurred between September 29, 2020 and November 15, 2020, and was reported on December 17, 2020.
INCIDENT DETAILS -
TYPE
Data Breach
AUGUST 2018
100Before Incident
Breach
13 Aug 2018Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM0
DIS406072525
The California Office of the Attorney General reported a data breach involving Discover Financial Services on January 25, 2019. The breach occurred on August 13, 2018, and involved Discover card account information, although the specific types of data exposed are unknown. Affected individuals were issued new cards as a precaution against potential fraud.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
JANUARY 2018
100Before Incident
Breach
02 Jan 2018Discover
Discover Financial Services

Data Breach at Discover Financial Services (2018)

100After Incident
HIGH0
DIS027091825
On January 2, 2018, Discover Financial Services experienced a data breach reported by the California Office of the Attorney General on July 18, 2018. The incident involved unauthorized access to Discover card account information, though the exact scope of the compromised data—such as whether it included card numbers, expiration dates, CVV codes, or customer identities—was not publicly disclosed. The breach raised concerns over potential financial fraud, identity theft, or misuse of payment details, as card-related data is a prime target for cybercriminals. While no immediate evidence suggested large-scale exploitation, the exposure of such sensitive financial information posed risks to both the company’s reputation and its customers’ trust. Discover likely faced regulatory scrutiny, potential fines, and the need for enhanced security measures to mitigate future risks. Customers may have been advised to monitor their accounts for suspicious activity, though the long-term impact on affected individuals remained uncertain due to the lack of transparency regarding the breach’s specifics.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account informationPayment Information Risk: Potential (details unclear)
DATA BREACH
Type Of Data Compromised: Card account informationSensitivity Of Data: High (financial)
JULY 2017
100Before Incident
Breach
16 Jul 2017Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM0
DIS323072625
The California Office of the Attorney General reported a data breach involving Discover Financial Services on June 25, 2018. The breach occurred on July 16, 2017, potentially exposing Discover card account information, though specific types of data involved are unknown. This incident highlights the vulnerability of financial institutions to cyber threats and the importance of robust security measures to protect sensitive customer information.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
APRIL 2017
100Before Incident
Breach
27 Apr 2017Discover
Discover Financial Services

Discover Financial Services Data Breach

100After Incident
MEDIUM0
DIS257072925
The California Attorney General reported on October 19, 2017, that Discover Financial Services experienced a data breach on April 27, 2017. The breach involved Discover card account information, although the specific details of the compromised data are unclear. This incident highlights the vulnerability of financial institutions to cyber threats and the potential for significant financial and reputational damage.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
SEPTEMBER 2016
100Before Incident
Breach
04 Sep 2016Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM0
DIS822072825
The California Attorney General reported a data breach involving Discover Financial Services on July 21, 2017. The breach occurred on September 4, 2016, and involved Discover card account information, although specific details about the data compromised are unclear.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
AUGUST 2016
100Before Incident
Breach
10 Aug 2016Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM0
DIS1018072625
The California Office of the Attorney General reported a data breach involving Discover Financial Services on July 21, 2017. The breach occurred on August 10, 2016, potentially affecting Discover card account information, though the specific types of compromised information are unknown. This incident highlights the vulnerability of financial institutions to cyber threats and the importance of robust security measures to protect sensitive customer data.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
JUNE 2016
100Before Incident
Breach
04 Jun 2016Discover
Discover Financial Services

Discover Financial Services Data Breach (2016)

100After Incident
CRITICAL0
DIS016091825
On June 4, 2016, Discover Financial Services suffered a data breach reported by the California Attorney General on July 21, 2017. The incident involved unauthorized access to Discover card account information, though the exact scope of compromised data—such as whether full payment details, cardholder names, or additional personal identifiers were exposed—remained undisclosed. The breach raised concerns over potential financial fraud, identity theft, or misuse of customer payment data, given the sensitivity of credit card-related information. While no immediate evidence suggested large-scale exploitation, the exposure of such data inherently poses risks to customers’ financial security and the company’s reputation. Discover likely faced regulatory scrutiny, customer notifications, and potential remediation costs, including credit monitoring or fraud mitigation measures. The lack of transparency regarding the specific data types compromised further complicated risk assessments for affected individuals.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account informationPayment Information Risk: Potential (unclear specifics)
DATA BREACH
Discover card account informationSensitivity Of Data: High (financial)
APRIL 2016
100Before Incident
Breach
01 Apr 2016Discover
Discover Financial Services

Discover Financial Services Data Breach (2016)

100After Incident
CRITICAL0
DIS041090625
In April 2016, Discover Financial Services experienced a data breach that was publicly reported by the California Office of the Attorney General on June 23, 2017. The incident involved unauthorized access to Discover card account information, though the exact scope of the compromised data—such as whether it included card numbers, security codes, or personal details—was not disclosed. In response, Discover took remedial action by issuing new cards with updated security codes and expiration dates to affected customers. While the breach did not result in confirmed financial fraud or identity theft at the time of reporting, the exposure of payment card details posed a risk of potential misuse. The incident highlighted vulnerabilities in Discover’s data protection measures, necessitating proactive steps to mitigate harm to customers. The lack of transparency regarding the specific data compromised added uncertainty to the severity of the breach’s long-term impact on affected individuals.
INCIDENT DETAILS -
TYPE
Data Breach
DATA BREACH
Discover card account informationSensitivity Of Data: High (payment card data)
FEBRUARY 2016
100Before Incident
Breach
26 Feb 2016Discover
Discover Financial Services

Discover Financial Services Data Breach (2016)

100After Incident
HIGH0
DIS1008091725
The California Office of the Attorney General disclosed a data breach affecting Discover Financial Services, which occurred on February 26, 2016, but was reported only in November 2018. The incident involved unauthorized access to Discover card account information, though the exact nature and extent of the compromised data—such as card numbers, expiration dates, or CVV codes—remained unspecified. While there was no explicit confirmation of data theft, the company took precautionary measures by reissuing new cards to impacted customers to mitigate potential fraud risks. The breach raised concerns over the delayed detection and disclosure (over two years), which could have prolonged exposure to fraudulent activities. Although no immediate financial losses or large-scale fraud were publicly documented, the incident highlighted vulnerabilities in Discover’s data security protocols. The lack of clarity on the stolen data also left customers uncertain about the full scope of the risk, potentially damaging trust in the company’s ability to safeguard sensitive financial information.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account informationIdentity Theft Risk: Potential (unclear specifics)Payment Information Risk: Potential (unclear specifics)
DATA BREACH
Card account informationSensitivity Of Data: High (payment-related)Data Exfiltration: Unclear
JANUARY 2016
100Before Incident
Breach
02 Jan 2016Discover
Discover Financial Services

Discover Financial Services Data Breach

100After Incident
MEDIUM0
DIS818080425
The California Office of the Attorney General reported that Discover Financial Services experienced a data breach on January 2, 2016, with the breach notification reported on February 20, 2017. The breach involved Discover card account information, although the specific data compromised is unknown at this time.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Discover card account information
DATA BREACH
Type Of Data Compromised: Discover card account information
NOVEMBER 2015
100Before Incident
Breach
24 Nov 2015Discover
Discover Financial Services

Discover Financial Services Data Breach (2015)

100After Incident
MEDIUM0
DIS743082025
The California Office of the Attorney General disclosed a data breach affecting Discover Financial Services in May 2017, though the incident itself occurred on November 24, 2015. The breach involved potential exposure of account information, though the exact nature of the compromised data—such as whether it included full financial details, personal identifiers, or transaction histories—was not specified. While no immediate evidence suggested large-scale fraud or identity theft, the lack of clarity on the scope of the breach raised concerns about unauthorized access to sensitive customer records.The delay in reporting (over 18 months) further compounded risks, as affected individuals may have remained unaware of potential vulnerabilities in their accounts. Discover Financial Services, a major credit card issuer and payment processor, faced scrutiny over its data protection measures, particularly given the prolonged gap between the breach and public disclosure. Although no direct financial losses or systemic disruptions were confirmed, the incident highlighted gaps in timely breach notification and transparency, potentially eroding customer trust and exposing the company to regulatory penalties under data protection laws.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Account information (unspecified)
DATA BREACH
Type Of Data Compromised: Account information
OCTOBER 2015
100Before Incident
Breach
27 Oct 2015Discover
Discover Financial Services

Discover Financial Services Data Breach

100After Incident
MEDIUM0
DIS714072525
The California Office of the Attorney General reported that Discover Financial Services experienced a data breach on October 27, 2015, with the report published on September 23, 2016. The breach involved Discover card account information, but specific details about the number of affected individuals and the method of breach are unclear.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
AUGUST 2015
100Before Incident
Breach
02 Aug 2015Discover
Discover Financial Services

Discover Financial Services Data Breach

100After Incident
MEDIUM0
DIS929072825
The California Office of the Attorney General reported that Discover Financial Services experienced a data breach on August 2, 2015, and the breach was reported on March 21, 2016. The breach involved Discover card account information, though specific details about the types of information compromised and the number of affected individuals are unclear.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
AUGUST 2015
100Before Incident
Breach
31 Jul 2015Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM0
DIS851072725
The California Office of the Attorney General reported a data breach involving Discover Financial Services on July 20, 2016. The breach occurred on July 31, 2015, and affected Discover card account information. The specific details about the number of individuals impacted and types of information compromised are unknown. This breach highlights the vulnerability of financial institutions to cyber threats and the potential for significant financial and reputational damage.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
JUNE 2015
100Before Incident
Breach
21 Jun 2015Discover
Discover Financial Services

Discover Financial Services Data Breach

100After Incident
MEDIUM0
DIS145072725
The California Office of the Attorney General reported that Discover Financial Services experienced a data breach on June 21, 2015, and reported the incident on September 23, 2016. The data involved was Discover card account information, but the specific types of data compromised are unknown. To mitigate risk, Discover is issuing new cards to affected users.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Discover card account information
DATA BREACH
Type Of Data Compromised: Discover card account information
MAY 2015
100Before Incident
Breach
01 May 2015Discover
Discover Financial Services

Discover Financial Services Data Breach (2015)

100After Incident
HIGH0
DIS034090625
The California Office of the Attorney General disclosed a data breach affecting Discover Financial Services, which occurred on May 1, 2015, but was reported only on November 21, 2017. The incident involved unauthorized access to Discover card account information, though the exact scope of the compromised data—such as whether it included card numbers, customer names, or transaction details—remained undisclosed. The delay in reporting (over two and a half years) raised concerns about transparency and compliance with breach notification laws. While no explicit evidence suggested large-scale fraud or identity theft stemming from the breach, the exposure of financial account data posed risks such as potential fraudulent transactions, phishing attacks targeting cardholders, or misuse of payment details. The lack of clarity on the extent of the breach further complicated risk assessments for affected customers. Discover likely faced reputational damage due to the incident and the prolonged delay in disclosure, which could erode trust among consumers and regulators. The breach underscored vulnerabilities in payment system security and the importance of timely incident response.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account informationPayment Information Risk: Potential (details unclear)
DATA BREACH
Card account informationSensitivity Of Data: High (financial)
MARCH 2015
100Before Incident
Breach
02 Mar 2015Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM0
DIS913072825
The California Office of the Attorney General reported a data breach involving Discover Financial Services on October 26, 2016. The breach occurred on March 2, 2015, potentially affecting Discover card account information, though the specifics of the data compromised are unclear.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Discover card account information
DATA BREACH
Type Of Data Compromised: Discover card account information
NOVEMBER 2014
100Before Incident
Breach
02 Nov 2014Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM0
DIS737072625
The California Office of the Attorney General reported a data breach involving Discover Financial Services on February 20, 2017. The breach occurred on November 2, 2014, potentially exposing Discover card account information. The specific number of individuals affected is unknown.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Discover card account information
DATA BREACH
Type Of Data Compromised: Discover card account information
OCTOBER 2014
133Before Incident
Breach
22 Oct 2014Discover
Discover Financial Services

Data Breach at Discover Financial Services

100After Incident
MEDIUM-33
DIS014072625
The California Office of the Attorney General reported a data breach involving Discover Financial Services on July 21, 2017. The breach occurred on October 22, 2014, and involved Discover card account information, although the specific types of information compromised are unclear. The organization responded by issuing new cards to reduce the possibility of fraud.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
SEPTEMBER 2014
176Before Incident
Breach
11 Sep 2014Discover
Discover Financial Services

Discover Financial Services Data Breach (2014)

117After Incident
HIGH-59
DIS1011090725
The California Office of the Attorney General disclosed a data breach affecting Discover Financial Services in June 2023, though the incident itself occurred on September 11, 2014. The breach involved unauthorized exposure of Discover card account information, though the exact types of compromised data—such as card numbers, expiration dates, CVV codes, or customer identities—were not publicly specified. While no immediate evidence suggested large-scale fraud or misuse of the exposed data, the incident raised concerns over potential financial fraud, identity theft, or phishing attacks targeting affected cardholders. The delayed disclosure (nearly nine years after the breach) further amplified scrutiny over Discover’s data protection practices and regulatory compliance. The lack of clarity on the scope of stolen data left customers uncertain about their exposure to risks, though no widespread financial harm was reported at the time of the announcement.
INCIDENT DETAILS -
TYPE
Data Breach
DATA BREACH
Discover card account informationSensitivity Of Data: High (potential payment information)
JULY 2014
208Before Incident
Breach
01 Jul 2014Discover
Discover Financial Services

Discover Financial Services Data Breach

148After Incident
HIGH-60
DIS037072925
The California Office of the Attorney General reported that Discover Financial Services experienced a data breach involving Discover card accounts on June 23, 2017. The breach occurred on July 1, 2014, and affected undisclosed numbers of individuals, with potential exposure of Discover card account information.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
JUNE 2014
263Before Incident
Breach
19 Jun 2014Discover
Discover Financial Services

Data Breach Involving Discover Financial Services

204After Incident
MEDIUM-59
DIS232072825
The California Office of the Attorney General reported a data breach involving Discover Financial Services on July 20, 2016. The breach occurred on June 19, 2014, potentially affecting Discover card account information, though the exact number of affected individuals is unknown. The breach did not involve Discover's systems directly and led to the issuance of new cards with updated security features.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Discover card account information
DATA BREACH
Type Of Data Compromised: Discover card account information
MAY 2014
308Before Incident
Breach
04 May 2014Discover
Discover Financial Services

Data Breach at Discover Financial Services

248After Incident
MEDIUM-60
DIS547072625
The California Office of the Attorney General reported a data breach involving Discover Financial Services on October 26, 2016, which occurred on May 4, 2014. The breach potentially exposed Discover card account information, but the exact types of data compromised are unknown. A new card with a new security code and expiration date was issued as a response to the breach.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
APRIL 2014
361Before Incident
Breach
10 Apr 2014Discover
Discover Financial Services

Discover Financial Services Data Breach

301After Incident
MEDIUM-60
DIS227072825
The California Office of the Attorney General reported that Discover Financial Services experienced a data breach on April 10, 2014, with the breach being reported on June 26, 2015. The breach involved the potential compromise of card account information, but no specific number of individuals affected or exact types of information compromised were provided.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
card account information
DATA BREACH
card account information
FEBRUARY 2014
407Before Incident
Breach
19 Feb 2014Discover
Discover Financial Services

Data Breach at Discover Financial Services

347After Incident
MEDIUM-60
DIS954072725
The California Office of the Attorney General reported a data breach involving Discover Financial Services on March 21, 2016. The breach occurred on February 19, 2014, and affected Discover card account information, although the specific types of compromised data remain unclear.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Discover card account information
DATA BREACH
Discover card account information
JANUARY 2014
455Before Incident
Breach
01 Jan 2014Discover
Discover Financial Services

Discover Financial Services Data Breach

395After Incident
MEDIUM-60
DIS253080525
The California Office of the Attorney General reported a data breach at Discover Financial Services on June 17, 2016. The breach, which occurred on January 1, 2014, involved Discover card account information. The specific number of individuals affected and the exact data compromised remain unknown. This incident highlights the potential risks associated with financial data breaches, where sensitive information such as account details could be exposed, leading to financial losses and reputational damage.
INCIDENT DETAILS -
TYPE
Data Breach
DECEMBER 2013
513Before Incident
Breach
20 Dec 2013Discover
Discover Financial Services

Data Breach at Discover Financial Services

453After Incident
HIGH-60
DIS005072625
The California Office of the Attorney General reported a data breach notification from Discover Financial Services on December 20, 2013. The specific date of the breach is not available, and there were 2 cards affected. The notification indicated that account information may have been compromised but did not involve any Discover card systems. The details about the compromised information and specific response actions were limited.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Account Information
DATA BREACH
Type Of Data Compromised: Account Information
NOVEMBER 2013
564Before Incident
Breach
01 Nov 2013Discover
Discover Financial Services

Data Breach Incident at Discover Financial Services

504After Incident
LOW-60
DIS954091725
The California Office of the Attorney General disclosed a data breach incident involving Discover Financial Services in November 2013. The breach notification suggested that account information may have been compromised, though no evidence of unauthorized access was confirmed. The exact date of the breach remains undisclosed, leaving uncertainty about the scope of exposure. While the incident raised concerns over potential financial data exposure—such as credit card details or account credentials—there was no confirmation of actual theft or misuse. The lack of verified unauthorized access implies that the breach may have been contained before significant harm occurred, but the risk of exposure persisted. The incident underscores vulnerabilities in financial data protection, even when no direct financial or reputational damage was immediately observable. Discover Financial Services likely initiated investigations and mitigation measures, though public details on corrective actions remain limited.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Account information (potentially)Payment Information Risk: Potential (account information)
DATA BREACH
Type Of Data Compromised: Account informationSensitivity Of Data: Moderate (account-related)
OCTOBER 2013
622Before Incident
Breach
17 Oct 2013Discover
Discover Financial Services

Data Breach at Discover Financial Services (2013)

562After Incident
HIGH-60
DIS023090625
On October 17, 2013, the California Office of the Attorney General disclosed a data breach affecting Discover Financial Services. The incident involved the potential compromise of account information for two credit cards, though no evidence of unauthorized use or fraudulent activity was reported. The exact method of the breach (e.g., cyber attack, insider threat, or system vulnerability) and the full scope of affected individuals remained undisclosed. While the exposure was limited to a minimal number of accounts, the incident prompted regulatory notification due to the sensitivity of financial data. The lack of confirmed misuse suggested containment, but the breach still posed reputational risks and operational scrutiny for Discover. No further details were provided on whether the compromise stemmed from external hacking, internal negligence, or a technical flaw in their systems.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Account information for two cardsPayment Information Risk: Potential (no evidence of unauthorized use)
DATA BREACH
Type Of Data Compromised: Account information (credit/debit card details)Number Of Records Exposed: 2Sensitivity Of Data: High (payment card data)
MAY 2013
666Before Incident
Breach
24 May 2013Discover
Discover Financial Services

Data Breach at Discover Financial Services

606After Incident
MEDIUM-60
DIS205072925
The California Office of the Attorney General reported a data breach involving Discover Financial Services on May 24, 2013. The specific date of the breach is not available, and no details regarding the number of individuals affected or the types of information compromised were provided. This breach highlights the potential vulnerabilities in financial services and the importance of robust cybersecurity measures to protect sensitive information.
INCIDENT DETAILS -
TYPE
Data Breach
JANUARY 2013
715Before Incident
Breach
18 Jan 2013Discover
Discover Financial Services

Data Breach at Discover Financial Services

655After Incident
MEDIUM-60
DIS521072725
The California Office of the Attorney General reported a data breach involving Discover Financial Services on January 18, 2013. The breach involved compromised Discover card account information, although no specifics on the method of breach or the number of affected individuals were provided.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Data Compromised: Discover card account information
DATA BREACH
Type Of Data Compromised: Discover card account information
AUGUST 2012
768Before Incident
Breach
17 Aug 2012Discover
Discover Financial Services

Data Breach at Discover Financial Services

707After Incident
MEDIUM-61
DIS114072525
The California Office of the Attorney General reported a data breach incident involving Discover Financial Services on August 17, 2012. The breach did not involve any Discover card systems and there is no evidence of unauthorized use of the account numbers; however, customers were advised that their account information may have been compromised, leading to the issuance of new cards.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Account Information
DATA BREACH
Account Information
MAY 2012
784Before Incident
Cyber Attack
25 May 2012Discover
Discover Financial Services

Discover Financial Services Data Breach (2012)

766After Incident
HIGH-18
DIS546091725
The California Office of the Attorney General disclosed a data breach involving Discover Financial Services on May 25, 2012. The incident centered on the potential compromise of card account information, prompting the company to issue new cards to affected customers. While the exact number of impacted individuals and the precise method of the breach (e.g., phishing, system intrusion, or third-party vulnerability) were not publicly disclosed, the exposure of payment card details posed a direct risk of fraudulent transactions and financial harm to customers.The breach underscored vulnerabilities in safeguarding sensitive financial data, though no evidence suggested broader systemic failures or large-scale identity theft beyond card-related fraud. The lack of transparency regarding the breach’s scope and origin further raised concerns about reputational damage, as customers and regulators questioned the company’s data protection measures. While no ransomware or large-scale data exfiltration (e.g., full customer profiles) was reported, the incident aligned with patterns of financial cybercrime, where attackers exploit weaknesses to access payment systems or transactional data.Discover’s response—proactively replacing compromised cards—mitigated immediate risks but highlighted the persistent threat of cyber attacks targeting financial institutions, where even limited exposures can erode trust and incur operational costs (e.g., card reissuance, fraud monitoring).
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Card account informationOperational Impact: Customers issued new cardsPayment Information Risk: Potential compromise of card account information
DATA BREACH
Type Of Data Compromised: Card account informationSensitivity Of Data: High (payment card data)

Frequently Asked Questions

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What is the current A.I Rankiteo Cyber Score for Discover ?
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What is the average per-incident point impact on Discover's A.I Rankiteo Cyber Score over the past 12 months ?
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How accurate is the A.I Rankiteo Risk Scoring methodology ?