Api penetration test exploit sensitive data exposure 03

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okay, let's delve into api penetration testing, specifically focusing on "sensitive data exposure" (often abbreviated as "sde") with a focus on scenario 03, and provide a practical code example. this is a critical area of api security because it deals directly with the potential for unauthorized access to confidential information.

**understanding sensitive data exposure (sde) in apis**

sensitive data exposure is a common vulnerability in apis that arises when an api endpoint returns more data than the user or application requesting the data is authorized to receive. this often happens because developers haven't properly implemented access controls or haven't carefully considered the data being returned by the api. it can also occur due to misconfigured serialization/deserialization processes.

**why sde is a serious problem:**

* **data breaches:** the most obvious risk is that malicious actors can gain access to sensitive information such as user credentials, personally identifiable information (pii), financial data, or intellectual property.
* **compliance violations:** exposure of pii can lead to violations of privacy regulations like gdpr, ccpa, hipaa, etc., resulting in significant fines and legal repercussions.
* **reputational damage:** a data breach can severely damage an organization's reputation, leading to a loss of customer trust and business.
* **account takeover:** exposed credentials can be used to take over user accounts, leading to further exploitation and damage.
* **privilege escalation:** in some cases, exposed data might include information that allows an attacker to escalate their privileges within the system.

**common causes of sensitive data exposure:**

* **lack of proper authorization checks:** apis might not adequately verify if the user or application making a request has the necessary permissions to access the requested data.
* **inadequate data filtering:** apis might return complete data objects without filtering out sensitive ...

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exploit sensitive data
data exposure
security vulnerabilities
API security assessment
data leakage
authentication flaws
access control issues
sensitive information disclosure
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OWASP API Top 10
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