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OWASP API Top 10

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API10:2023 Unsafe Consumption of APIs

The unsafe consumption of APIs can lead to security breaches, exposing sensitive data, user credentials, or proprietary information, as attackers may exploit vulnerabilities in API usage to gain unauthorized access, execute arbitrary code, or perform unauthorized actions within the system.

Stephanie Best
Stephanie Best
June 6, 2023

API9:2023 Improper Inventory Management

Improper Inventory Management is the ninth security threat listed in the OWASP API Security Top 10. By exploiting this vulnerability, attackers can gain unauthorized access to sensitive data, or even gain full server access through old, unpatched or vulnerable versions of APIs.

Stephanie Best
Stephanie Best
June 6, 2023

API8:2023 Security Misconfiguration

There are certainly cases where security misconfiguration can be the result of something basic like a missing patch, but some misconfigurations are far stealthier and can be obscured by complex architectures.

Stephanie Best
Stephanie Best
June 6, 2023

API7:2023 Server Side Request Forgery

A Server Side Request Forgery (SSRF) API attack occurs when an attacker manipulates an API endpoint to make the targeted server perform unintended requests on behalf of the attacker.

Stephanie Best
Stephanie Best
June 6, 2023

API6:2023 Unrestricted Access to Sensitive Business Flows

This threat has replaced Mass Assignment as number 6 on the OWASP API Security Top 10 list. It occurs when an API exposes a business flow without compensating for how the functionality could cause harm if used excessively through automation.

Stephanie Best
Stephanie Best
June 6, 2023

API5:2023 Broken Function Level Authorization

Broken function level authorization (BFLA) has been identified as the fifth most critical threat to APIs in the OWASP API Security Top 10, and for good reason.

Stephanie Best
Stephanie Best
June 6, 2023

API4:2023 Unrestricted Resource Consumption

API requests consume resources such as network, CPU, memory, and storage. The amount of resources required to satisfy a request greatly depends on the input from the user and the business logic of the endpoint.

Stephanie Best
Stephanie Best
June 6, 2023

API3:2023 Broken Object Property Level Authorization

An API security solution must be able to identify and report on the large variety of sensitive data types that can be sent in API requests and responses, as well as any anomalous activity where attackers send manipulated API requests with unauthorized parameters.

Stephanie Best
Stephanie Best
June 6, 2023

API2:2023 Broken Authentication

Broken authentication is the second most critical API security threat listed in the OWASP API Security Top 10. Common examples of attacks targeting broken authentication include API enumeration and brute-forcing attacks that make high volumes of API requests with minor changes.

Stephanie Best
Stephanie Best
June 6, 2023

API1:2023 Broken Object Level Authorization (BOLA)

Failure to enforce authorization at the object level can lead to data exfiltration as well as unauthorized viewing, modification, or destruction of data.

Stephanie Best
Stephanie Best
June 6, 2023

OWASP API Security Top 10 2023 Explained

In this post and subsequent additions to the series, we dig into each of the Open Web Application Security Project (OWASP) API Security Top 10 in detail.

Stephanie Best
Stephanie Best
June 6, 2023

Top Changes in the OWASP API Security Top 10 2023RC

Salt Security shares insights on the initial release candidate for the API Security Top 10 2023.

Yaniv Balmas
Yaniv Balmas
March 12, 2023

API Gateway Security: What is it and is it Enough?

Learn what an API Gateway is and get a better understanding of how the various API tools can layer together to detect and prevent the most frequent API attacks.

Stephanie Best
Stephanie Best
October 27, 2022

What Is The OWASP API Security Top 10

The Open Web Application Security Project has been around since 2001 and is best known for the OWASP Web Application Security Top 10 which has set the standard for how orgs have approached security to protect traditional web applications.

Chris Westphal
Chris Westphal
October 8, 2019

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