Not everyone should have access to everything. For example, determine who is allowed access to create and POST data to the database, and who is allowed read-only access to GET data. #5 Establish an authorization policyĮstablish an authorization policy that allows users and apps to gain access to specified methods and resources. Keys, tokens, and other sensitive credentials should be salted and hashed for an additional layer of security in case of a data breach. Number of requests submitted from the same IPįollow an authentication protocol that allows the server to verify the user is who they say they are.Since the server can’t handle all of those requests at the same time, legitimate users cannot use it.īesides limiting the number of requests a client can send over a certain period of time, there’s other ways to control the load on your system: In general, DDoS attacks are perpetrated by large botnets that make many requests simultaneously to the target, such as a web app. Consider enforcing a rate limit to discourage abuse, a distributed denial-of-service (DDOS) attack, or handle an unexpected surge of traffic. If a client is submitting too many requests, malicious or otherwise, it can take a toll on your system. Other sensitive information can be sent as an encrypted payload. If you plan to send secrets for authentication, try including them in a header. Never include your keys or other sensitive information in your URLs or query parameters. Encrypt sensitive data before sending it, before storing it, and use encrypted connections (TLS) to protect your data in transit. Your data is vulnerable while in transit and at rest. You can quickly return if the lookup is out of those criteria. We know that an NPM package can only be 212 characters, and all ASCII. Take, for example, a Node package lookup system. For example, ensuring that input is treated as the appropriate data type, or verifying that the incoming Content-Type header and content are the same.īesides protecting against external security attacks, this optimization can save unnecessary load on your system. The server should validate parameters and payloads against a specific set of expectations. Validating inputs before piping them through to another system is important for protecting against common attacks like XML external entities (XXE), insecure deserialization, and injections. When you’re building your own APIs, keep the following principles for API security in mind. So treat all request data received by your API as untrusted, including headers, and don’t rely only on cookies for authentication, as it may make your API vulnerable to cross-site request forgery (CSRF). Even though you may think requests are only going to come from your mobile app or a trusted third-party, in most cases, an attacker can send a request directly to your API. Validate API requests just as rigorously as you’d vet input to your standard web app. Almost all of the risks identified in this list apply to API security. Protect your APIs with these guiding principles 7 Guiding Principles for API securityĮvery year, the Open Web Application Security Project (OWASP) publishes their Top 10 Application Security Risks.
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