đź“… Webinar - Delivering Security on Your Terms: An Intro to Self-Hosted

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đź“… Webinar - Delivering Security on Your Terms: An Intro to Self-Hosted

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My GoCardless API Key leaked! What should I do?

What is a GoCardless API Key and how it is used?

A GoCardless API Key is a unique identifier that allows developers to securely authenticate and access the GoCardless API for processing payments and managing customer information.

Here are the main use cases for the GoCardless API Key:

  • Authentication: The GoCardless API Key is used to authenticate and authorize requests made to the GoCardless API. It ensures that only authorized users or applications can access and interact with the API.
  • Integration: Developers use the GoCardless API Key to integrate GoCardless payment processing functionality into their applications or systems. This allows them to create and manage payments, customers, and mandates through the API.
  • Security: The GoCardless API Key is a sensitive piece of information that should be securely stored and managed. Proper secret management practices, such as storing the API Key in a secure vault and rotating it regularly, are essential to prevent unauthorized access and protect sensitive payment data.

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1. Code snippets to prevent GoCardless API Key hardcoding using environment variables

Using environment variables for storing sensitive information like API keys is a secure practice because:

  • Environment variables are not hard-coded in the code, reducing the risk of accidental exposure.
  • Environment variables are separate from the codebase, making it easier to manage and update without changing the code.
  • Environment variables are not stored in version control systems, adding an extra layer of security.
  • Access to environment variables can be restricted based on user permissions, limiting unauthorized access.

How to secure your secrets using environment variables

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2. Code snippet to prevent GoCardless API Key hardcoding using AWS Secrets Manager

Using AWS Secrets Manager to manage GoCardless API Keys is a secure way to handle sensitive data. Here are code snippets in five different programming languages that demonstrate how to retrieve the GoCardless API Key from AWS Secrets Manager.

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3. Code snippet to prevent GoCardless API Key hardcoding using HashiCorp Vault

Using HashiCorp Vault for managing GoCardless API Keys is a great way to enhance security. Here are code snippets in five different programming languages for securely handling a GoCardless API Key using HashiCorp Vault.

Remember to replace the VAULT_ADDR and VAULT_TOKEN with your Vault server address and authentication token. The snippets assume that the GoCardless API Key is stored under the api_key field within Vault. The specifics of the Vault path and field names should be adjusted to match your Vault setup.

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4. Code snippet to prevent GoCardless API Key hardcoding using CyberArk Conjur

Using CyberArk Conjur to manage GoCardless API Key is a secure way to handle sensitive data. Here are code snippets in five different programming languages that demonstrate how to retrieve the GoCardless API Key from CyberArk Conjur.

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How to generate a GoCardless API Key?

To generate a GoCardless API Key, follow these steps:

  1. Log in to your GoCardless account.
  2. Click on the 'Developers' tab in the dashboard.
  3. Under 'API keys', click on 'Create API key'.
  4. Enter a name for your API key (e.g., "MyApp API Key").
  5. Click on 'Create API key' to generate the key.
  6. Copy the generated API key and securely store it for use in your application.

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My GoCardless API Key leaked, what are the possible reasons?

There are several reasons why a GoCardless API Key might have been leaked:

  • Improper storage: If the API Key is stored in a plaintext file or hardcoded in the code, it can easily be leaked if the file is exposed or the code is shared.
  • Weak access controls: If the API Key is not properly protected with strong access controls, unauthorized users may gain access to it.
  • Unintended exposure: Developers may accidentally include the API Key in publicly accessible code repositories or configuration files.
  • Phishing attacks: Malicious actors may use phishing techniques to trick developers into revealing their API Key.
  • Insufficient monitoring: Without proper monitoring and detection mechanisms in place, it may take a long time to realize that the API Key has been leaked.

What are the risks of leaking a GoCardless API Key

Leaking a GoCardless API Key can pose serious risks to the security of your application and the data it handles. It is important for developers to understand the potential consequences of such a breach:

  • Data Breaches: A leaked API Key can be used by malicious actors to access sensitive data stored within your GoCardless account, such as customer information, payment details, and transaction history.
  • Unauthorized Transactions: With access to your GoCardless account through a leaked API Key, attackers can initiate unauthorized transactions, leading to financial losses and reputational damage.
  • Service Disruption: If an attacker gains access to your GoCardless account and makes unauthorized changes, it can disrupt the normal operation of your payment processing system, causing inconvenience to your customers.
  • Legal and Compliance Issues: A data breach resulting from a leaked API Key can have legal implications, especially if it involves sensitive customer information. It may also lead to non-compliance with data protection regulations.

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GoCardless API Key security best practices

  • Avoid embedding the secret directly in your code. Instead, use environment variables or secrets managers‍
  • Secure storage: store the GoCardless API Key in a secure location, such as a password manager or a secrets management service.
  • Regular rotation: periodically rotate the API key to minimize the risk of long-term exposure.
  • Restrict permissions: apply the principle of least privilege by only granting the key the minimum necessary permissions.
  • Monitor usage: regularly check the usage logs for any unusual activity or unauthorized access attempts.
  • Implement access controls: limit the number of users who have access to the secret and enforce strong authentication measures.
  • Use a secrets manager: utilize secret management tools like CyberArk or AWS Secrets Manager for enhanced security.

By adhering to the best practices, you can significantly reduce the risk associated with GoCardless API Key usage and improve the overall security of your GoCardless API Key implementations.

Exposing secrets on GitHub: What to do after leaking Credential and API keys

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GoCardless API Key leak remediation: what to do

What to do if you expose a secret: How to stay calm and respond to an incident [cheat sheet included]

How to check if GoCardless API Key was used by malicious actors

  • Review Access Logs: Check the access logs of your GoCardless API Key account for any unauthorized access or unusual activity. Pay particular attention to access from unfamiliar IP addresses (if you haven’t set up a specific allow list) or at odd hours.
  • Monitor Usage Patterns: Look for anomalies in the usage patterns, such as unexpected spikes in data access or transfer.
  • Check Active Connections and Operations: Review the list of active connections and recent operations on your database. Unusual or unauthorized operations might indicate malicious use.
  • Audit API Usage: If possible, audit the usage of your API key through any logging or monitoring services you have integrated with GoCardless API Key. This can give insights into any unauthorized use of your key.

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Steps to revoke the GoCardless API Key

Generate a new GoCardless API Key:

  • Log into your GoCardless API Key account.
  • Navigate to the API section and generate a new API key.

Update Services with the new key:

  • Replace the compromised key with the new key in all your services that use this API key.
  • Ensure all your applications and services are updated with the new key before deactivating the old one.

Deactivate the old GoCardless API Key:

  • Once the new key is in place and everything is functioning correctly, deactivate the old API key.
  • This can typically be done from the same section where you generated the new key.

Monitor after key rotation:

  • After deactivating the old key, monitor your systems closely to ensure that all services are running smoothly and that there are no unauthorized access attempts.

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How to understand which services will stop working

  • Inventory of services: keep an inventory of all services and applications that utilize your GoCardless API Key.
  • Communication and documentation: Ensure that your team is aware of which services are dependent on the key. Maintain documentation for quick reference.
  • Testing: before deactivating the old key, test your services with the new key in a staging environment. This helps in identifying any services that might face issues post rotation.
  • Fallback strategies: Have a fallback or emergency plan in case a critical service fails after the key rotation. This might include temporary measures or quick rollback procedures.

In summary, the remediation process involves identifying potential misuse, carefully rotating the key, and ensuring minimal disruption to services. Being proactive and having a well-documented process can greatly reduce the risks associated with a compromised API key.

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What about other secrets?

GitGuardian helps developers keep 350+ types of secrets out of source code. GitGuardian’s automated secrets detection and remediation solution secure every step of the development lifecycle, from code to cloud:

  • On developer workstations with git hooks (pre-commit and pre-push);
  • On code sharing platforms like GitHub, GitLab, and Bitbucket;
  • In CI environments (Circle CI, Travis CI, Jenkins CI, GitHub Actions, and many more);
  • In Docker images.

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Environment Variables
Environment Variables
Environment Variables

charge

nullable string

For card errors, the ID of the failed charge.

payment_method_type

nullable string

If the error is specific to the type of payment method, the payment method type that had a problem. This field is only populated for invoice-related errors.

doc_url

nullable string

A URL to more information about the error code reported.

request_log_url

nullable string

A URL to the request log entry in your dashboard.

charge

nullable string

If the error is specific to the type of payment method, the payment method type that had a problem. This field is only populated for invoice-related errors.

Hide
Show
child attributes

type

enum

For some errors that could be handled programmatically, a short string indicating the error code reported.

charge

nullable string

If the error is specific to the type of payment method, the payment method type that had a problem. This field is only populated for invoice-related errors.

Hide
Show
child attributes

type

enum

For some errors that could be handled programmatically, a short string indicating the error code reported.

payment_intent

nullable object

The PaymentIntent object for errors returned on a request involving a PaymentIntent.

setup_intent

nullable object

The SetupIntent object for errors returned on a request involving a SetupIntent.

Hide
Show
child attributes

type

enum

For some errors that could be handled programmatically, a short string indicating the error code reported.

Hide
Show
child attributes

type

enum

For some errors that could be handled programmatically, a short string indicating the error code reported.

CLIENT LIBRARIES

$ gem install stripe
$ pip install stripe
$ composer require stripe/stripe-php
MAVEN
<dependency>
  <groupId>com.stripe</groupId>
  <artifactId>stripe-java</artifactId>
  <version>24.16.0</version>
</dependency>

GRADLE
compile "com.stripe:stripe-java:24.16.0"
$ npm install --save stripe
$ go get github.com/stripe/stripe-go/v76
$ nuget install Stripe.net
SHOW
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