Security ratings are fast becoming a foundational element of enterprise risk management. As organizations expand their digital ecosystems and rely on growing networks of third-party vendors, the ability to measure and communicate cybersecurity risk in a standardized, objective way has never been more critical. This guide covers what security ratings are, how they are calculated, why they matter in today's threat landscape, what to look for in a security ratings platform, and how enterprise security teams are putting these tools to work. Whether you are a CISO building out a third-party risk management (TPRM) program or a procurement professional evaluating a new vendor, understanding security ratings is essential to making confident, data-driven decisions.
What Are Security Ratings?
A security rating is a quantifiable, data-driven assessment of an organization's cybersecurity performance and risk posture. Unlike traditional assessments that rely on self-reported questionnaires or point-in-time audits, security ratings are derived from externally observable information that can be independently verified. This makes them both objective and continuously current.
The concept is closely analogous to a credit rating. Just as a financial credit score evaluates an organization's ability to meet debt obligations based on observable financial behavior, a security rating evaluates an organization's ability to manage cyber risk based on observable security behaviors. Platforms like UpGuard, SecurityScorecard, and Bitsight have built their products around this core model, generating scores that give security teams, procurement leaders, and executives a clear, at-a-glance view of digital risk.
A security rating is a quantifiable score assigned to an organization based on the continuous, non-intrusive monitoring of its publicly accessible assets and associated security control performance. These scores are typically presented as simple, easy-to-understand scores or grades, such as A-F or 0-900, and similar to how a credit rating evaluates financial health, a security rating evaluates digital health.
Security ratings are an objective, data-driven, quantifiable measurement of an organization's overall cybersecurity performance, providing businesses and government agencies with a third-party, independent view into the security behaviors and practices of their own organization as well as that of their business partners.
According to Gartner, cybersecurity ratings will become as important as credit ratings when assessing the risk of existing and new business relationships. Forrester Consulting found that 87% of respondents find security ratings valuable (37%) or extremely valuable (50%).
Why Security Ratings Matter in 2025 and Beyond
The urgency behind security ratings is not abstract. The threat landscape facing enterprise organizations has intensified significantly, and the interconnected nature of modern supply chains means that a single vendor's vulnerability can create ripple effects across an entire ecosystem. Security ratings give organizations the continuous, scalable intelligence they need to stay ahead of these risks.
By 2025, 93% of CISOs call SaaS security a top priority, and more than half of B2B buyers bring up security in the very first conversation, a dramatic rise from 28% in 2023. This shift reflects a broader change in how organizations evaluate trust with vendors and partners. Security posture has moved from a back-office concern to a front-line business requirement.
SecurityScorecard's 2025 Global Third Party Breach Report found that 35.5% of breaches are linked to third-party access. Third-party vendor and supply chain compromises cost an average of $4.91M, ranking as the second most expensive breach type after malicious insider threats. These figures underscore why passive, questionnaire-based vendor reviews are no longer sufficient. Organizations need continuous, automated visibility into the security postures of every entity in their ecosystem.
Beyond breach prevention, security ratings also play a growing role in cyber insurance underwriting, regulatory compliance, and M&A due diligence. Insurers are intensifying scrutiny of security controls and compliance in response to stricter privacy laws, AI-driven threats, ransomware, and social engineering exposures. A strong, verifiable security rating can directly influence an organization's insurability and premium rates.
Security ratings also aid in compliance efforts as they allow businesses to continually monitor their adherence to regulations that relate to their daily operations. With the EU's Digital Operational Resilience Act (DORA) and frameworks like NIS2 placing greater emphasis on supply chain security, security ratings are rapidly becoming a compliance necessity rather than a strategic option.
Common Challenges in Cybersecurity Risk Assessment and How Security Ratings Solve Them
Organizations managing cybersecurity risk at scale face a common set of operational challenges. Traditional methods of evaluating vendor and organizational security are resource-intensive, inconsistent, and difficult to maintain as vendor portfolios grow. Security ratings platforms were built to address these gaps directly.
Key Problems in Cybersecurity Risk Assessment
Lack of Continuous Visibility: Point-in-time security questionnaires produce a snapshot that is often outdated before the ink is dry. A vendor who passes an annual audit can experience a critical misconfiguration or breach event the next day, leaving the organization unaware.
Resource Constraints: Traditional methods of assessing organizational and third-party security are time-consuming and resource-intensive, meaning that without an adequate budget and staff, many organizations are unable to accurately evaluate the strength of their cybersecurity controls.
Scale of Vendor Ecosystems: With Gartner reporting 60% of organizations having 1,000 or more third-party relationships, effectively managing the cybersecurity risks they create and practicing vendor due diligence proves increasingly difficult. Manual reviews simply cannot keep pace with this volume.
Lack of Standardization: Without a common framework for measuring risk, security conversations between organizations, their boards, and their vendors often lack the shared vocabulary needed for effective decision-making. Different teams assess risk in different ways, making it difficult to prioritize or benchmark.
Third-Party and Fourth-Party Blind Spots: Despite the known risks, 54% of organizations still do not properly vet their third-party vendors. Even those that do rarely have visibility into the vendors of their vendors, leaving fourth-party risks largely unmanaged.
Security ratings address these challenges by offering continuous visibility into internal security postures, helping organizations better understand the cyber threats they face. By automating data collection, analysis, and scoring, platforms like UpGuard eliminate the manual overhead of traditional vendor assessments while providing more accurate, up-to-date intelligence. When calculated and applied effectively, security ratings give security teams a trustworthy framework to ensure that their efforts and investments will have the greatest possible impact on risk, and they provide a standardized, easily understandable way to communicate the security team's performance and the organization's overall risk posture to key internal and external stakeholders.
How Are Security Ratings Calculated?
Understanding the mechanics behind security ratings is critical to using them effectively. While different platforms use proprietary methodologies, the general framework for calculation shares several common elements: data collection, risk categorization, weighted scoring, and continuous updates.
The Data Collection Layer
Security rating companies use a combination of data points collected organically or purchased from public and private sources and then apply proprietary algorithms to articulate an organization's security effectiveness into a quantifiable score. This data is gathered non-intrusively, meaning organizations are assessed from the outside in, without the need for agents, integrations, or intrusive network testing.
Security rating platforms continuously collect vast amounts of data from various public and proprietary sources, including breach data (information about past security breaches involving the organization), DNS records (details about an organization's online domains), threat intelligence feeds (information about current threats and vulnerabilities), and dark web data (information available in underground forums, which might include stolen credentials or data related to the organization).
Risk Factor Categorization
Once data is collected, platforms organize findings into risk categories that represent different areas of cybersecurity exposure. Organizations can rate risk in cybersecurity by looking across 10 risk factors within their organization, including application security, endpoint security, hacker chatter, DNS health, network security, and more.
For each rated organization, platforms intelligently identify and classify behaviors emanating from that organization's network assets, including communication with Command and Control Servers, participation in Distributed Denial-of-Service attacks, malware distribution, network scanning, and email attacks.
Platforms also assess configuration-level signals. This includes data for security issues with internet communications such as open ports and encryption settings, as well as software on endpoint devices and infrastructure such as currency of versions and vulnerability remediation practices.
Weighted Scoring and Historical Analysis
Calculating a security score involves weighted analysis where not all risk factors have the same impact (for instance, a recent data breach might be weighted more heavily than a minor misconfiguration), historical analysis where some platforms consider the organization's security history and reward improvements over time, and industry comparison where the organization's score might be compared to industry benchmarks or peers.
Some platforms calculate a security rating out of a maximum score and then decrease it as assets fail cybersecurity review for specific threat signals, with deductions weighted by the severity of the risk across critical, high, medium, and low categories.
Some scoring methodologies use a logarithmic scale, where each increment corresponds to a multiple of 10, similar to how Richter and decibel scales are based on comparable approaches.
Continuous Monitoring and Score Updates
Scores are typically updated daily or weekly to reflect changes in the organization's security posture. This means that a security rating is not a static snapshot, but a living indicator of cybersecurity health that responds to new events, remediated issues, and changes in the threat environment.
Sudden drops in rating can occur due to publicly disclosed security incidents, an increase in compromised systems events, or poorly configured findings, while improvements in ratings are due to either many simultaneously resolved events or updates to configuration findings.
Important features of a security rating methodology include transparency of risk vectors and weights so organizations understand which factors influence the final rating, evidence drill-down to view the source data used to identify issues, false positive checking to exclude incorrect findings, and API or SIEM integration to ensure automatic transfer of data to existing security systems.
What to Look for in a Security Ratings Platform
With multiple platforms available, choosing the right security ratings solution requires evaluating several critical capabilities. The best platforms combine data breadth, scoring transparency, usability, and integration depth to deliver actionable intelligence at scale.
Must-Have Features in a Security Ratings Platform
Continuous Monitoring: A platform should not rely on periodic scans. Security ratings should provide a continuous and up-to-date assessment of your potential attack surface without the need to have deep technical expertise. Daily scanning cadence is the baseline for any enterprise-grade solution.
Scoring Transparency: Organizations must be able to understand not just their score, but why it is what it is. Platforms that provide evidence-level drill-down, risk vector explanations, and remediation guidance deliver far more value than those that provide only a summary grade.
Vendor Risk Coverage: An integrated risk platform should combine third-party security ratings, security assessment questionnaires, and threat intelligence capabilities to give businesses a full and comprehensive view of their risk surface. The ability to monitor both internal and third-party risk in a unified environment reduces operational complexity.
Data Breach and Dark Web Detection: Advanced platforms should include a proactive breach detection capability that automates the detection of data leaks and breaches on the open and dark web by scouring sources such as S3 buckets, public repositories, and unsecured servers.
Questionnaire and Workflow Integration: The platform should provide tools for evaluating vendor security posture, tracking compliance, and automating risk assessments, allowing users to leverage questionnaires, automated workflows, and continuous monitoring to identify vulnerabilities and maintain oversight of vendor performance.
Stakeholder-Ready Reporting: Security insights need to reach board members and senior executives in a format they can act on. A reports library that makes it easier and faster to access tailor-made reports for different stakeholders in one centralized location, supporting effective reporting on third-party risk management programs including to the board and C-suite, is a critical differentiator.
Integration Ecosystem: A platform that connects to GRC tools, SIEM platforms, ticketing systems, and workflow automation ensures that security ratings data flows into the broader security and compliance infrastructure without creating additional silos.
UpGuard's Vendor Risk platform exemplifies these capabilities. UpGuard's platform uses proprietary security ratings, data leak detection capabilities, and remediation workflows to proactively identify security exposures, grouping risks intelligently into six categories: website risks, email security, network security, phishing and malware, reputation risk, and brand protection. UpGuard has been ranked number one in Third-Party and Supplier Risk Management for 16 consecutive quarters, based on over 700 reviews.
How Enterprise Security Teams Use Security Ratings Platforms
Security ratings are not a single-use tool. Enterprise teams across risk management, procurement, compliance, and the C-suite use them in diverse, complementary ways to manage exposure and build organizational resilience.
Third-Party Risk Management (TPRM): The most common application is vendor risk. Security ratings are vital for third-party risk management, cyber insurance underwriting, and internal risk benchmarking. TPRM teams use security ratings to quickly assess the risk posture of new vendors, continuously monitor existing vendor relationships, and prioritize remediation engagement when a vendor's score drops below acceptable thresholds.
Cyber Insurance Underwriting: Bitsight's FICO-like security rating is used by underwriters at insurance companies for pricing cyber insurance, by third-party research teams, and for due diligence research in private equity and M&A activities. Organizations with strong, verifiable security ratings are better positioned to negotiate favorable policy terms.
M&A and Due Diligence: Security ratings provide acquirers with a rapid, non-intrusive view of a target company's cybersecurity posture before a deal closes. This reduces the risk of inheriting undisclosed security liabilities.
Regulatory Compliance: Security rating software assists organizations in managing third-party risk, improving security processes, and maintaining ongoing compliance by delivering actionable insights based on assessment results. With regulations such as DORA and NIS2 requiring documented evidence of vendor oversight, continuous monitoring through security ratings provides the audit trail regulators expect.
Executive and Board Reporting: Security ratings facilitate data-driven, risk-based conversations about cybersecurity with key non-technical stakeholders such as board members, vice presidents, regulators, investors, and key business partners. Rather than presenting raw technical findings, security teams can use a simple score to contextualize risk performance over time.
Attack Surface Management: The proactive approach of the attack surface management lifecycle helps identify the entire asset inventory, especially those at high risk and unknown assets, to allow security teams to remediate issues and improve security ratings. Ratings platforms directly support this lifecycle by surfacing exposed assets and prioritizing findings by risk severity.
UpGuard Vendor Risk is an AI-powered third-party cyber risk management solution that empowers security teams to eliminate the response gap and take control of their vendor ecosystem. Its combination of continuous scanning, AI-powered document analysis, and integrated remediation workflows makes it a strong fit for enterprise teams that need end-to-end vendor risk coverage.
Best Practices and Expert Tips for Security Ratings Programs
Getting the most out of a security ratings program requires more than simply subscribing to a platform. Organizations that treat security ratings as an operational discipline, rather than a one-time report card, extract significantly more value and improve their risk posture more consistently.
Establish Clear Score Ownership: Assign clear ownership, whether a CISO, risk officer, or dedicated team, so someone is accountable for monitoring changes, coordinating responses, and ensuring that remediation tasks are followed through. This elevates the score from a novelty to a board-level risk indicator.
Prioritize High-Severity Findings First: Not all issues carry equal weight. Focus remediation resources on the findings that have the greatest impact on the overall score and the greatest exposure to active exploitation. Use exploit likelihood signals and known-exploited vulnerability data to rank issues by real-world risk, not theoretical impact.
Implement Continuous Monitoring Across the Vendor Portfolio: Proactively monitoring all vendors with daily scanning and objective, industry-leading security ratings ensures organizations are instantly alerted to critical shifts in a vendor's security posture. Continuous monitoring closes the gap that periodic questionnaires leave open.
Use Ratings as a Vendor Onboarding Filter: Integrate security ratings into the procurement workflow from the start. Establishing minimum acceptable score thresholds before onboarding a new vendor prevents high-risk relationships from entering the ecosystem in the first place.
Integrate Ratings Into Existing Security Tooling: UpGuard integrates with multiple services, including Zapier to enable connections to 3,000-plus apps, GRC platforms, ticketing systems like JIRA, and VRM solutions like ServiceNow. Embedding ratings data into existing workflows means risk insights are acted on faster and consistently.
Monitor for Score Disputes and False Positives: The proprietary nature of the scoring algorithms can sometimes lead to disputes regarding accuracy if the underlying data or methodology is not transparent. Platforms that offer evidence drill-down and a clear dispute resolution process help organizations correct inaccurate findings and maintain score integrity.
Benchmark Against Industry Peers: Use industry comparison features to understand how your organization's score compares to peers in your sector. This provides context for leadership discussions and helps justify security investment by demonstrating where the organization stands relative to its competitive landscape.
Advantages and Benefits of Security Ratings Platforms
Security ratings platforms deliver measurable, operational benefits that extend well beyond a simple score. For enterprise teams managing complex risk environments, these tools fundamentally change the efficiency and accuracy of cybersecurity risk management.
Scalability: Security ratings allow organizations to monitor hundreds or thousands of vendor relationships simultaneously without proportionally scaling headcount. Automated vendor assessments, monitoring, and risk rating dashboards help organizations track the security posture of their third-party vendors at scale.
Objectivity: Because security ratings are derived from externally observable data rather than self-reported information, they remove the bias and inconsistency inherent in vendor-supplied questionnaires. Security ratings are derived from objective, externally verifiable information and are calculated by a trusted, independent organization.
Speed: Traditional vendor assessments can take weeks to complete. Security ratings provide near-instant visibility into a vendor's risk posture using only a domain name, dramatically reducing the time required for initial due diligence.
Proactive Risk Identification: Reports attribute poor scores to specific security findings, such as an expired certificate or a connection to a vulnerable cloud asset. This granularity allows security teams to take precise remediation action rather than working from generalized risk signals.
Cyber Insurance Support: A well-managed, high security rating provides insurers with the evidence they need to evaluate risk accurately. A robust, verifiable, and mature cybersecurity posture is the non-negotiable prerequisite for organizations seeking to obtain meaningful coverage. Security ratings provide exactly this kind of documented, auditable posture evidence.
Business Relationship Trust: Organizations that are transparent about their cybersecurity posture build trust within their business ecosystem, helping to strengthen customer relationships and business partnerships, with external attack surface management creating value beyond cybersecurity by supporting risk reduction and enhancing overall resilience.
How UpGuard Simplifies Security Ratings and Vendor Risk Management
UpGuard stands out in the security ratings landscape because it treats continuous monitoring and vendor risk management as a unified, end-to-end capability rather than separate products. This integration allows security teams to move seamlessly from identifying a risk to communicating it and resolving it, all within a single platform.
UpGuard generates ratings through proprietary algorithms that take in and analyze trusted commercial and open-source data sets to non-intrusively collect data that can quantitatively evaluate cybersecurity risk, with an organization's security rating ranging from 0 to 950 and comprised of a weighted average of the risk rating of all externally facing assets, such as web applications, IP addresses, and marketing sites.
To produce an organization's security rating, UpGuard calculates a weighted average of the automated scan data for owned assets and combines that with the organization's questionnaire score where applicable. This dual approach ensures that the score reflects both passive external observation and actively verified internal controls, providing a more complete picture of cybersecurity posture.
UpGuard's platform also supports the full lifecycle of vendor risk management. UpGuard Vendor Risk supports reporting and remediation activities, helping businesses address regulatory requirements and reduce potential risk exposure from external relationships, enabling centralized visibility into the risk status of vendors and aiding organizations in making informed decisions while maintaining consistent security standards across their supply chain.
UpGuard offers real-time visibility into any third-party vendor's risk posture by combining security ratings with risk assessments based on popular cyber frameworks and regulations, and also supports the entire scope of vendor risk management, including due diligence and remediation programs.
G2 reviewers report that UpGuard excels in providing a centralized platform for vendor risk management, which significantly streamlines daily operations, with users appreciating how it consolidates vendor assessments, external risk monitoring, and breach insights, reducing the need to navigate multiple tools.
For organizations that need to report security performance to leadership, UpGuard provides structured access to data including the average vendor security rating and 12-month history, a distribution of vendor risk ratings and 12-month comparison, and a board summary report that provides a high level snapshot of key factors about the company's cybersecurity posture. This makes UpGuard particularly well-suited to security teams that need to regularly brief executive leadership or boards on risk exposure.
The Future of Security Ratings
Security ratings are evolving in parallel with the threat landscape. As attack surfaces grow more complex, incorporating cloud environments, AI systems, and ever-expanding third-party ecosystems, the methodologies behind security ratings are becoming more sophisticated to keep pace.
AI-native platforms are beginning to analyze trillions of data points to identify patterns of compromise through non-intrusive, external data collection. Machine learning is enabling rating platforms to detect subtle behavioral signals that traditional rule-based systems would miss, improving both the accuracy and predictive value of scores.
The integration of artificial intelligence and machine learning into both insurance underwriting and risk assessment tools continues to advance rapidly, enabling more accurate risk pricing and providing businesses with increasingly sophisticated threat detection and response capabilities.
Platforms are also applying machine-learning algorithms to improve the quality and accuracy of security findings and provide key insights on security posture. This progression means that future security ratings will not simply reflect current exposure, but will increasingly predict breach likelihood based on behavioral patterns observed across large populations of organizations.
As regulatory frameworks tighten globally and the financial consequences of third-party breaches continue to rise, security ratings are poised to become as standard in business relationships as credit checks are in financial ones. Organizations that build mature security ratings programs now will be better positioned to meet these requirements, demonstrate security performance to partners and regulators, and maintain the trust that increasingly underpins enterprise partnerships.
For organizations ready to take the next step, UpGuard offers a free trial of its Vendor Risk and Breach Risk platforms, giving security teams immediate access to industry-leading security ratings across their vendor ecosystem.
FAQs About Security Ratings and How They Are Calculated
What is a security rating?
A security rating, also referred to as a cybersecurity risk rating, is a quantifiable metric that communicates an organization's or third-party's cyber risk posture over time. These scores are generated by independent third-party platforms such as UpGuard, SecurityScorecard, and Bitsight using externally observable data, without requiring access to internal systems. They serve as an at-a-glance measure of cybersecurity health that organizations use for vendor risk management, cyber insurance, compliance, and executive reporting.
How are security ratings calculated?
Security ratings are generally calculated by collecting externally observable information about the rated organization, including both configuration details and evidence of possible security events. Platforms apply proprietary algorithms to weight and normalize this data across risk categories such as network security, DNS health, application security, and endpoint protection. The most effective and trustworthy cybersecurity ratings methodologies measure an organization's ongoing security execution and perform dynamic calculations based on frequent data collection, observation, and analysis.
Why do organizations need security ratings for vendor risk management?
Third-party breaches are no longer edge cases. They are one of the most common routes attackers use to get into otherwise well-defended organizations, especially through vendor access, vendor-managed environments, and vulnerable vendor software. Security ratings solve the scale problem by enabling organizations to monitor hundreds or thousands of vendor relationships continuously without relying on periodic questionnaires that go stale between assessment cycles. Platforms like UpGuard provide continuous alerting when a vendor's security posture changes, allowing teams to respond before risk materializes into a breach.
What data sources do security ratings platforms use?
Security ratings platforms draw from a broad range of public and proprietary sources to build their scores. These typically include DNS records, SSL certificate data, open port scans, email security configurations, dark web intelligence, breach databases, threat intelligence feeds, and internet routing data. As independent assessments of enterprise security, security ratings take into account data from both public and private sources, which are then analyzed using proprietary scoring methodologies. The quality and breadth of these data sources directly influences the accuracy and predictive power of the resulting score.
How often are security ratings updated?
The cybersecurity landscape is dynamic, with new threats emerging daily. As such, security rating platforms continuously monitor and update their data, ensuring that the ratings remain current. Leading platforms update scores daily, meaning that a significant security event, a newly discovered misconfiguration, or a resolved vulnerability can affect a score within 24 hours. UpGuard completes full vendor scans every 24 hours, providing near real-time visibility into vendor security postures.
What is the difference between a security rating and a security questionnaire?
Security ratings do not rely on traditional risk assessment techniques like penetration testing, security questionnaires, or on-site visits. Instead, security ratings are derived from objective, externally verifiable information and are calculated by a trusted, independent organization. Questionnaires are self-reported and subject to misrepresentation, while security ratings are based on observable, verifiable external signals. Most mature vendor risk programs use both, combining the continuous, objective data from ratings platforms with the contextual detail from structured questionnaires.
How can an organization improve its security rating?
Security ratings enable businesses to continuously monitor the cyber health of their environments and ecosystems, which is vital to the success of attack surface management programs. Improving a security rating typically involves addressing the specific findings surfaced by the platform, starting with the highest-severity issues. Common improvements include patching known vulnerabilities, securing open ports, renewing or reconfiguring SSL certificates, improving email security settings such as DMARC and SPF, and removing exposed data from public-facing repositories. Platforms like SecurityScorecard can instantly generate remediation roadmaps from any scorecard to prioritize resources and resolve vulnerabilities that have the most significant impact on your rating.
How do security ratings support cyber insurance underwriting?
Cyber insurers increasingly rely on security ratings to evaluate applicant risk before issuing or renewing policies. A strong, consistent security rating provides insurers with the objective, real-time evidence they need to assess exposure accurately. Bitsight's security rating is used by underwriters at insurance companies for pricing cyber insurance, by third-party research teams, and for due diligence research in private equity and M&A activities. Organizations with high and improving scores may qualify for better coverage terms, while those with poor or declining ratings face higher premiums or reduced coverage options.