Comparison Overview

Discover

VS

Block

Discover

2500 Lake Cook Road, None, Riverwoods, IL, US, 60015
Last Update: 2025-08-04 (UTC)
Between 900 and 1000

Excellent

Discoverยฎ is now part of Capital One. Together, weโ€™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 Discoverยฎ card, America's cash rewards pioneer, and offers personal loans, home loans, checking and savings accounts and certificates of deposit. The Discover Global Networkยฎ is comprised of Discover Network, with millions of merchants and cash access locations; PULSEยฎ, one of the nation's leading ATM/debit networks; and Diners Club Internationalยฎ, a global payments network with acceptance around the world.

NAICS: 52
NAICS Definition: Finance and Insurance
Employees: 21,528
Subsidiaries: 0
12-month incidents
0
Known data breaches
34
Attack type number
2

Block

None, None, Oakland, California, US, None
Last Update: 2025-09-10 (UTC)

Strong

Between 800 and 900

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams โ€” People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more โ€” provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.

NAICS: 52
NAICS Definition: Finance and Insurance
Employees: 12,798
Subsidiaries: 0
12-month incidents
1
Known data breaches
2
Attack type number
1

Compliance Badges Comparison

Security & Compliance Standards Overview

https://images.rankiteo.com/companyimages/discover-financial-services.jpeg
Discover
โ€”
ISO 27001
Not verified
โ€”
SOC 2
Not verified
โ€”
GDPR
No public badge
โ€”
PCI DSS
No public badge
https://images.rankiteo.com/companyimages/joinblock.jpeg
Block
โ€”
ISO 27001
Not verified
โ€”
SOC 2
Not verified
โ€”
GDPR
No public badge
โ€”
PCI DSS
No public badge
Compliance Summary
Discover
100%
Compliance Rate
0/4 Standards Verified
Block
0%
Compliance Rate
0/4 Standards Verified

Benchmark & Cyber Underwriting Signals

Incidents vs Financial Services Industry Average (This Year)

No incidents recorded for Discover in 2025.

Incidents vs Financial Services Industry Average (This Year)

Block has 19.05% more incidents than the average of same-industry companies with at least one recorded incident.

Incident History โ€” Discover (X = Date, Y = Severity)

Discover cyber incidents detection timeline including parent company and subsidiaries

Incident History โ€” Block (X = Date, Y = Severity)

Block cyber incidents detection timeline including parent company and subsidiaries

Notable Incidents

Last 3 Security & Risk Events by Company

https://images.rankiteo.com/companyimages/discover-financial-services.jpeg
Discover
Incidents

Date Detected: 9/2020
Type:Breach
Attack Vector: Inadvertent Disclosure
Blog: Blog

Date Detected: 8/2018
Type:Breach
Blog: Blog

Date Detected: 1/2018
Type:Breach
Blog: Blog
https://images.rankiteo.com/companyimages/joinblock.jpeg
Block
Incidents

Date Detected: 9/2025
Type:Breach
Attack Vector: Insider Threat (former employee)
Motivation: Financial Gain (alleged by shareholders), Unauthorized Data Access
Blog: Blog

Date Detected: 12/2021
Type:Breach
Attack Vector: Unauthorized Access
Motivation: Unknown
Blog: Blog

FAQ

Discover company company demonstrates a stronger AI risk posture compared to Block company company, reflecting its advanced AI governance and monitoring frameworks.

Discover company has faced a higher number of disclosed cyber incidents historically compared to Block company.

In the current year, Block company has reported more cyber incidents than Discover company.

Neither Block company nor Discover company has reported experiencing a ransomware attack publicly.

Both Block company and Discover company have disclosed experiencing at least one data breach.

Discover company has reported targeted cyberattacks, while Block company has not reported such incidents publicly.

Neither Discover company nor Block company has reported experiencing or disclosing vulnerabilities publicly.

Neither Discover company nor Block company has publicly disclosed detailed information about the number of their subsidiaries.

Discover company employs more people globally than Block company, reflecting its scale as a Financial Services.

Latest Global CVEs (Not Company-Specific)

Description

TS3 Manager is modern web interface for maintaining Teamspeak3 servers. A reflected cross-site scripting vulnerability has been identified in versions 2.2.1 and earlier. The vulnerability exists in the error handling mechanism of the login page, where malicious scripts embedded in server hostnames are executed in the victim's browser context without proper sanitization. This issue is fixed in version 2.2.2.

Risk Information
cvss3
Base: 4.3
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Description

TS3 Manager is modern web interface for maintaining Teamspeak3 servers. A Denial of Dervice vulnerability has been identified in versions 2.2.1 and earlier. The vulnerability permits an unauthenticated actor to crash the application through the submission of specially crafted Unicode input, requiring no prior authentication or privileges. The flaw manifests when Unicode tag characters are submitted to the Server field on the login page. The application fails to properly handle these characters during the ASCII conversion process, resulting in an unhandled exception that terminates the application within four to five seconds of submission. This issue is fixed in version 2.2.2.

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

Weblate is a web based localization tool. An open redirect exists in versions 5.13.2 and below via the redir parameter on .within.website when Weblate is configured with Anubis and REDIRECT_DOMAINS is not set. An attacker can craft a URL on the legitimate domain that redirects a victim to an attacker-controlled site. The redirect can also be used to initiate drive-by downloads (redirecting to a URL that serves a malicious file), increasing the risk to end users. This issue is fixed in version 5.13.3.

Risk Information
cvss4
Base: 2.1
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. The official Docker image for Termix versions 1.5.0 and below, due to being configured with an Nginx reverse proxy, causes the backend to retrieve the proxy's IP instead of the client's IP when using the req.ip method. This results in isLocalhost always returning True. Consequently, the /ssh/db/host/internal endpoint can be accessed directly without login or authentication. This endpoint records the system's stored SSH host information, including addresses, usernames, and passwords, posing an extremely high security risk. Users who use the official Termix docker image, build their own image using the official dockerfile, or utilize reverse proxy functionality will be affected by this vulnerability. This issue is fixed in version 1.6.0.

Risk Information
cvss4
Base: 9.2
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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

OpenPLC_V3 has a vulnerability in the enipThread function that occurs due to the lack of a return value. This leads to a crash when the server loop ends and execution hits an illegal ud2 instruction. This issue can be triggered remotely without authentication by starting the same server multiple times or if the server exits unexpectedly. The vulnerability allows an attacker to cause a Denial of Service (DoS) against the PLC runtime, stopping any PC started remotely without authentication. This results in the PLC process crashing and halting all automation or control logic managed by OpenPLC.

Risk Information
cvss3
Base: 7.1
Severity: LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
cvss4
Base: 6.1
Severity: LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/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