[Blog](/blog) Show links Resources [Blog](/blog) [Breaches](/breaches) [eBooks, reports, & more](/resources) [Events](/events) [News](/news) [Data Breaches](/category/data-breaches) Show links Categories [Attack Surface Management](/category/attack-surface-management) [Company News](/category/company-news) [Compliance and Regulations](/category/compliance-and-regulations) [Cybersecurity](/category/cybersecurity) [Data Breaches](/category/data-breaches) [DevOps](/category/devops) [Human Cyber Risk](/category/human-cyber-risk) [Risks and Vulnerabilities](/category/risks-and-vulnerabilities) [Third-Party Risk Management](/category/third-party-risk-management) [Vendor Risk Management](/category/vendor-risk-management) [Assume Breach Mentality vs. Supply Chain Attacks in 2026](/blog/prevent-supply-chain-attacks-with-assume-breach) Publish date January 5, 2026 {x} minute read # Assume Breach Mentality vs. Supply Chain Attacks in 2026 [Get a demo](/contact-sales) [Free trial](/demo) [Download the PDF guide](/resources/comprehensive-guide-to-preventing-supply-chain-attacks) [Free trial](/demo) Written by [Edward Kost](/team/edward-kost) Senior Cybersecurity Writer Edward is a cyber writer with a mechanical engineering background. His work has been referenced by academic institutions and government bodies. Reviewed by [Kaushik Sen](/team/kaushik-sen) Chief Marketing Officer Kaushik has a background in software engineering, enterprise solution architecture, and data analytics. He brings a unique, data-driven perspective to cybersecurity education. Table of contents eBook A Comprehensive Guide to Preventing Supply Chain Attacks Free resource ### A Comprehensive Guide to Preventing Supply Chain Attacks [Download now](/resources/comprehensive-guide-to-preventing-supply-chain-attacks) Supply chain attacks are on the rise, yet few businesses are equipped to face this threat. This could be due to a growing despondency towards cybersecurity in light of the[ SolarWinds attack](https://www.upguard.com/news/u-s-treasury-emails-breached). If the US Government network - one of the most heavily guarded networks in the world - was compromised through a supply chain attack, how can average businesses expect to defend against this threat? The answer is with a change of mindset - don't assume [supply chain attacks](https://www.upguard.com/blog/supply-chain-attack) might occur, assume they will occur, or better yet, are occurring. This simple transition could be enough to protect your[ digital supply chain](https://www.upguard.com/blog/what-is-the-digital-supply-chain) and improve compliance with[ Joe Biden's Cybersecurity Executive Order.](https://www.upguard.com/blog/cybersecurity-executive-order) ## What is the Assume Breach Mentality? An assume breach mentality is a pessimistic approach to cybersecurity that assumes [cyber attacks](https://www.upguard.com/blog/cyber-attack) will happen, as opposed to assuming they might happen. This simple shift in mindset transitions defense strategies from a passive to an active framework. By assuming [data breaches](https://www.upguard.com/blog/data-breach) will occur, or are presently occurring, organizations cultivate their defense solutions, and continuously monitor for vulnerabilities throughout their network Assume breach is different to a [Zero Trust](https://www.upguard.com/blog/zero-trust) Architecture in that it’s less of a framework and more of a mindset. The transition to an assume breach mentality results in the reinforcement of loose defenses which could lead to the implementation of a Zero Trust Architecture. ## Can an Assume Breach Mentality Prevent Supply Chain Attacks? No cybersecurity tactic is guaranteed to [prevent supply chain attacks](https://www.upguard.com/blog/how-to-prevent-supply-chain-attacks#toc-11-tips-how-to-prevent-supply-chain-attacks), however, an assume breach mentality may significantly minimize the impact of supply chain attacks.  This is because with assume breach-minded organizations are continuously scanning their ecosystem for anomalies that could be connected to a cyberattack. So all [cyber threats](/blog/cyber-threat) are detected and remediated much sooner, reducing the impact of a breach. The faster a threat can be detected, the faster it can be isolated and the less of an impact it will have on critical resources. The [SolarWinds](https://www.upguard.com/security-report/solarwinds) supply chain attack was especially disastrous because the injected threat wasn’t detected in the SolarWinds ecosystem for 15 months. ## How to Implement Assume Breach An assumed breach mentality should be implemented with a [layered approach](https://www.upguard.com/blog/defense-in-depth). systematically sharpening the detection capabilities of every organizational element until the entire ecosystem is one big threat detection machine. An organization's attack surfaces can be represented by three primary elements: * People * Processes  * Technology By focusing on each of these elements separately, the implementation of an assume breach model is contextualized to create a multidimensional threat detection system. ### Assume breach focus: People Employees are a significant threat to [endpoint security](https://www.upguard.com/blog/endpoint-detection-and-response). In fact, 90% of data breaches are a [result of human error](https://www.techradar.com/news/90-percent-of-data-breaches-are-caused-by-human-error).  By enforcing an assume breach mindset to this element alone, the overall chances of data breaches occurring will be significantly reduced. The individuals that make up an organization fall into the following categories: * Employees * Leadership team * [Third-party vendors](https://www.upguard.com/blog/third-party-vendor) An assumed breach mindset should be instilled through education. All individuals need to be aware of the signs of a cyberattack attempt so they can be avoided and reported. The following list outlines some of the most common cyberattacks against employees. Each method is linked to a blog post that can be used to educate staff about how each attack method works. * [Phishing attacks](https://www.upguard.com/blog/phishing) * [Social Engineering Attacks](https://www.upguard.com/blog/social-engineering) * [DDoS attacks](https://www.upguard.com/blog/is-ddosing-illegal) * [Ransomware attacks](https://www.upguard.com/blog/ransomware) * [Malware attacks](https://www.upguard.com/blog/malware) * [Clickjacking attacks](https://www.upguard.com/blog/what-is-clickjacking) Initial cyberattack attempts tend to occur via email, often through email senders posing as legitimate employees.  As a minimal measure, all emails from internal staff should be confirmed with the actual staff member prior to opening any attachments or clicking on any links. This clarification process can be streamlined if utilizing a dedicated communication platform such as [Slack](https://www.upguard.com/integrations). Third-party vendors are difficult to reform because they tend to use their own third-party software. A better alternative is to implement a [third-party attack surface monitoring solution](https://www.upguard.com/product/vendorrisk) to detect any potential threats in vendor software - an essential tool when assuming your vendors will suffer a supply chain attack. #### Maintain a log of user activity To measure suspicious internal events against a baseline of normality, the activity of all users should be logged.  This diary should include the specific resources being accessed, the geolocations they are accessed from, and the roles and responsibilities of each employee requesting access. Evaluating user activity will uncover who is accessing your [sensitive data](https://www.upguard.com/blog/sensitive-data). This [access should be restricted](https://www.upguard.com/blog/access-control) to a minimal number of authorized users ### Assume breach focus: Processes #### Create process policies Education equips employees with an assume breach mindset toolkit, processes enforce the application of this mindset.[ Information Security Policies](https://www.upguard.com/blog/information-security-policy) (ISP) outline a set of security rules and procedures an organization must adhere to. The primary goal of the ISP is to control the distribution data. By restricting access to sensitive data, the chances of this resource being compromised in a cyberattack are reduced. The creation of assume breach policies may naturally lead to the implementation of a [Zero Trust Architecture](https://www.upguard.com/blog/prevent-supply-chain-attacks-with-zero-trust-architecture). #### Restrict access to sensitive data The [Principle of Least Privilege](https://www.upguard.com/blog/principle-of-least-privilege) (POLP) is a very effective framework for restricting access to sensitive data. POLP limits the functions of users based on their specified privilege limits. For example, by default, an organization may prevent its employees from installing software on their devices but only permit the IT manager to perform this function. A privileged access protocol assumes most employees cannot be trusted and restricts them with hard limitations. This policy may seem paradoxical to the earlier mentioned recommendation - teach staff to avoid cyberattacks but don't trust them to do so. However, it is this multi-layered threat restriction approach that makes the assume breach mentality so effective at preventing supply chain attacks. #### Create an Incident Response Plan An organization that has completely embraced an assume breach mentality is always prepared to rapidly remediate data breaches.  This plan of action is outlined in an [Incident Response Plan.](https://www.upguard.com/blog/incident-response-plan) An IRP will instill calm during a high-duress data breach incident. It will teach staff how to isolate and remediate cyberattacks most efficiently. ### Assume breach focus: Technology Technological solutions should be implemented to support two categories of functions - keeping threats out of the ecosystem and remediating threats within an ecosystem. #### Keeping threats out of an ecosystem Cyber threats should be detected before they have had the opportunity for injection. [Antivirus software](https://www.upguard.com/blog/carbon-black-vs-crowdstrike) is a basic requirement for threat detection, but it's certainly not perfect. Sophisticated threat actors are capable of evading antivirus detection, so this technology should never be the only layer of cybersecurity defense. An assume breach mindset should also be applied to security solutions - assume each one fails and implements multiple layers to reduce the probability of failure. #### Keep antivirus software updated It's important to keep installing antivirus software updates so that new malware variants can be detected. In addition to an antivirus solution, all of the attack surfaces within an organization should be protected by a [network security](https://www.upguard.com/blog/network-security) system. #### **Implement network security** Network security systems are comprised of multiple solutions such as email security, firewalls, [data encryption](https://www.upguard.com/blog/encryption), and access protection. Multifactor authentication is a highly potent, and under-utilized network security solution. [According to Microsoft](https://healthitsecurity.com/news/multi-factor-authentication-blocks-99.9-of-automated-cyberattacks), multifactor authentication blocks 99.9% of automated cybercrime. #### **Implement third-party attack vector monitoring solutions ** Because supply chain attackers target third parties and compromise their users through an established backdoor, a solution should be implemented to monitor the attack surface of the vendor network. [Vendor Risk](https://www.upguard.com/product/vendorrisk) by UpGuard identifies all vulnerabilities in the vendor network that could be exploited in supply chain attacks. When threats are detected, preemptive remediation efforts, such as risk assessments can be deployed and tracked from the platform to secure defenses before a breach is even attempted. With an assumed breach mindset, all vendors are expected to fall victim to a supply chain attack, so they cannot be trusted to strengthen their security posture independently. Vendor Risk empowers organizations to take complete ownership of their third-party attack surface security. #### **Discover and remediate data leaks** The best method of threat injection prevention is to identify and remediate events that could potentially progress into data breaches. To effectively prevent threats from entering an ecosystem, organizations should switch from a defensive mindset to a discovery mindset. This is a natural response if the assumption is that a data breach always imminent. It's not possible to identify and intercept potential threat actors, but it is possible to identify and remediate specific events that could lead to a data breach. [Data leaks](https://www.upguard.com/blog/data-leak) are unintentional exposures of sensitive information that could give cybercriminals the [threat intelligence](https://www.upguard.com/blog/threat-intelligence) they need for a successful data breach. By identifying and remediating data leaks throughout the vendor network before they develop into data breaches, the risk of supply chain attacks is significantly reduced. UpGuard offers [a data leak detection service](https://www.upguard.com/product/breach-risk/threat-monitoring) to help organizations with sizeable vendor networks efficiently scale their data leak security. ## **Remediating Threats Within an Ecosystem** When a threat penetrates all of the above defenses, it needs to be isolated and remediated ASAP. A clearly laid Incident Response Plan will facilitate this and a [Zero Trust Architecture](https://www.upguard.com/blog/prevent-supply-chain-attacks-with-zero-trust-architecture) will help keep malicious codes isolated. [Remediation management solutions](https://www.upguard.com/product/vendorrisk), help stakeholders assess the effectiveness of their Incident Response Plan, and [cybersecurity ratings](https://www.upguard.com/blog/what-are-security-ratings) evaluate the effectiveness and speed of all remediation efforts. ## UpGuard Helps Organizations Prevent Supply Chain Attacks UpGuard helps organizations embrace an assumed breach mindset by offering a suite of solutions that detect vulnerabilities both internally and throughout the [vendor network](https://www.upguard.com/product/vendorrisk). By also offering managed data leak and Third-Party Risk Management services, organizations can scale their security efforts faster than ever before. UpGuard also supports compliance across a myriad of security frameworks, including the new supply chain requirements set by [Biden's Cybersecurity Executive Order](https://www.upguard.com/blog/cybersecurity-executive-order). Supply chain attacks are on the rise, yet few businesses are equipped to face this threat. This could be due to a growing despondency towards cybersecurity in light of the[ SolarWinds attack](https://www.upguard.com/news/u-s-treasury-emails-breached). If the US Government network - one of the most heavily guarded networks in the world - was compromised through a supply chain attack, how can average businesses expect to defend against this threat? The answer is with a change of mindset - don't assume supply chain attacks might occur, assume they will occur, or better yet, are occurring. eBook A Comprehensive Guide to Preventing Supply Chain Attacks Free resource ### A Comprehensive Guide to Preventing Supply Chain Attacks [Download now](/resources/comprehensive-guide-to-preventing-supply-chain-attacks) ## Related posts Learn more about the latest issues in cybersecurity. Attack Surface Management #### [Find Out if You're Exposed on the Dark Web](/blog/find-out-if-youre-exposed-on-the-dark-web) Answer 5 quick questions to predict what a dark web scan will find about your company. Then run the free scan to see your real exposure. [](/team/lance-turner) [Lance Turner](#) October 14, 2026 Data Breaches #### [Your First Dark Web Scan Report, Explained](/blog/your-first-dark-web-scan-report-explained) You scanned your domain. What do the results mean? [](/team/lance-turner) [Lance Turner](#) October 13, 2026 Cybersecurity #### [12 Cybersecurity Horror Stories of 2026 (No Costume Required)](/blog/cybersecurity-horror-stories-2026) A warning ignored once becomes a headline. Read more about these 12 real 2026 cybersecurity incidents, and the sign each one gave before it made the news. [](/team/revashni-moodley) [Revashni Moodley](#) October 14, 2026 Data Breaches #### [Good Security Rating? Your Dark Web Exposure Says Otherwise](/blog/good-security-rating-your-dark-web-exposure-says-otherwise) Scan your domain to see just how exposed you are on the Dark Web. [](/team/lance-turner) [Lance Turner](#) October 13, 2026 Cybersecurity #### [Left Unsupervised: 10 Times Access Outlived Its Authorization](/blog/10-times-access-outlived-authorization) Access granted once shouldn’t mean access forever. Read more on how unmonitored access caused 10 of these real-life breaches and what they taught us. [](/team/revashni-moodley) [Revashni Moodley](#) August 25, 2026 Cybersecurity #### [Surviving a LockBit Ransomware Attack: The ROI of Visibility](/blog/surviving-a-lockbit-ransomware-attack) Read how veteran CISO Nick Gicinto saved his alma mater from a LockBit ransomware attack by discarding the standard playbook. [](/team/nicholas-sollitto) [Nicholas Sollitto](#) June 1, 2026 [All posts](/blog) Experience superior visibility and a simpler approach to cyber risk management [Get a demo](/contact-sales) [Free trial](/demo)