An abreviation for REpresentational State Transfer. A design pattern for stateless client-server systems. Popular in the implementation of web services.

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Securing an error-reporting API against spamming

We are planning/spec'ing a REST API for communication with an iOS app an external team is building. For most calls, the API key hardcoded into the application and a session ID produced on our side ...
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1answer
36 views

Best practices for relatively simple API for our clients

I've been reading a lot about many API security considerations, the differences in terminology, OAUTH, OpenID, etc. Although I understand their absolute necessity when it comes to securing an API ...
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1answer
38 views

REST and confidential state - the trusted client problem etc?

With REST client sessions are not handled by maintaining server side state. Any such state needed for subsequent calls is passed to the client and then passed back to the server as part of those ...
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21 views

Securing ASP.net web api (REST)

I am developing a middle-ware web service app(REST) using asp.net mvc-4 web api. The rest services are consumed by android,ios,angularjs client apps.Same user is able to use multiple platforms at the ...
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2answers
44 views

Using mutual authentication, should I still worry about message integrity and replay attack?

I'm trying to secure a REST API, our situation is that every client connecting to this API will also have a certificate signed by our own CA. Because of this, I think we can use the client certificate ...
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1answer
73 views

SSL MITM attack vectors for server to server HTTPS using an untrusted certificate?

I have noticed a large amount of server-side HTTP client libraries accept untrusted TLS communication by default. What are obvious attack vectors for MITMing a server-to-server HTTPS communication ...
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1answer
63 views

Attack vectors for server to server using untrusted HTTPS certificates? [closed]

I have noticed a large amount of server-side HTTP client libraries accept untrusted TLS communication by default. For example, from the documentation for node's request: strictSSL - If true, ...
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58 views

OAUTH 2.0 Authorization Code flow and API key in Authorization header

We are creating Spring Boot REST services that registered third parties can use. We provided the third parties with a unique API key in JWT format, containing authorizations for that party to the ...
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3answers
157 views

Risks of securing REST API using SSL?

We are thinking of building a REST API where all calls are over SSL. After successful login subsequent calls will include a token which was returned by the login service. The server will validate ...
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2answers
170 views

Where should I store OAuth2 access tokens?

I am building a REST API back-end, for a mobile application. In our design choice, we decided to let OAuth2 providers handle the login security. However, I am not sure what the best practice is for ...
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35 views

Api key v oAuth for mobile apps

So we already have an oAuth setup for authenticating users. But there are endpoints that are not user specific that are currently open, we would like to restrict access to those open endpoints via API ...
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54 views

How to authorize users for rest service

me and my friend are doing a project for a company. It involves getting some information from the database and display it on a smartglass device (epson, sony, ...). Now we want to build a RESTful ...
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418 views

Avoiding Client impersonation with Rest Api

I'm sure that this use case has a known solution, but I can't find anything on google or I don't know which keywords to use. We are building an Angular app that is backed by a Rest Api. For ...
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1answer
145 views

How does including a magic prefix to a JSON response work to prevent XSSI attacks?

While working on a project that used the REST API for Gerrit Code Review I noticed that they do something that I thought was strange Source: To prevent against Cross Site Script Inclusion (XSSI) ...
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77 views

How necessary is CAPTCHA (or similar) in REST APIs?

I'm currently implementing a REST API designed to be consumed by multiple platforms (iOS, Android, HTML5/Javascript), and I'm trying to protect my service and reduce (AWS) costs by preventing bots ...
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1answer
55 views

How to prevent unintended REST API usage?

For a university project, I am supposed to implement an API that allows storage and retrival of strings. Clients accessing this api can be mobile phone apps and low power embedded devices. The data ...
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1answer
84 views

Secure communication between two REST apis

I'm building an application which stands alone for the most part, but which needs to access another system for private user data. What is a simple and safe method of securing that private data? We ...
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3answers
66 views

API Method Parameter Enumeration via Web Browser

I am obligated by contract to prevent enumeration of an API method's parameters but cannot achieve it. When I send a blank request to the API server in a web browser, the server responds with the ...
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1answer
90 views

How to store a token of a restful API?

It's a basic question, but I see in a lot of tutorials of authentication in restful webservices that some user goes to a website and register yourself with an ID and a password, after this ...
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1answer
120 views

Exploiting CSRF PUT request

If the application uses RESTful communication, does it need to have CSRF protection for PUT and DELETE requests? As per my understanding its not possible to trigger a PUT request using JavaScript and ...
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1answer
32 views

Adding HTTPS API to legacy hardware system that uses short numeric passwords

I work with a hardware system that traditionally authenticates users by the entry of a short numeric password on a physical keypad. Despite the small password entropy, this system has proven to be ...
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0answers
242 views

Secure REST API using Public/Private keys?

I was having a conversation with some programmer friends about securing an API without server modification. Only SFTP access to the filesystem is allowed and OpenSSL extension is installed, the admin ...
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0answers
74 views

How the AWS signature works in depth

I'm trying to understand how the AWS signature 4 works. I read the docs and I found the Python example where a signature is computed ...
2
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2answers
300 views

End to end security for REST services, any emerging standards?

I work with integration in the healthcare sector, where end-to-end security is important. We integrate with numerous SOAP services, and use the WS-security features to encrypt and sign requests and ...
2
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1answer
74 views

How to save passwords temporarily?

I work for a hosting company and are about to design a rest api for a 3rd party so they can create Active Directory user accounts. I also want this api to be async and robust enough to survice ...
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1answer
2k views

JWT token login and logout

Hi I am creating mobile native application that uses REST API endpoints to communicate with server side. I have had previous experience developing native clients, but I have simple token (random ...
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3answers
205 views

Can OAuth2 help to authenticate the app?

We have a mobile app that communicates with our server via a RESTful HTTPS API. We also have an attacker pretending to be our app while attempting to communicate with our web services API. We assume ...
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1answer
183 views

Does certificate pinning protect against Fiddler?

We have a mobile app that connects to our server via RESTful HTTPS web services. We also have an attacker who correctly emulates our app in communicating with our server. We therefore assume that our ...
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1answer
147 views

Is sharing a CSRF token between Rails apps secure?

We use an nginx reverse proxy to host two Rails apps under the same domain (one /path leads to another 'secondary' app). The 'secondary' app that lives under a path consumes REST APIs from the 'main' ...
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3answers
311 views

Security RESTful web application in Java

We are developing two web applications: Application A : Restful web-services running on a GlassFish Server . Application B : Dynamic web application running on a Tomcat Server . I am accessing ...
3
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1answer
137 views

API which does not allow to invalidate session on server side - how to make it more secure?

I'm writing an app around a REST API which does not allow the server to invalidate a session - i.e. there's no endpoint like logout which will make the cookie my app is using be invalid from now on. ...
2
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1answer
255 views

Securing REST API without sending or storing clear credentials

We are currently designing a REST API, and thinking about securing it. Going through a lot of documentation, it has become clear that 2 options are available. HMAC Authentication By hashing with ...
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4answers
498 views

Securing REST API without HTTPS

I'm developing a REST API but I am unable to use HTTPS without using self-signed certificates. I understand that that might be acceptable for some, but I don't want security messages popping up on ...
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0answers
121 views

Comparing Oauth and JWT auth in my web application

I have created an e-commerce website which has a REST API on the server side and Angular on the client side. I am considering to use OAuth to secure my API, but it seems to overkill because I have no ...
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36 views

Is it necessary to add CSRF tokens for REST API? [duplicate]

I have a few REST APIs for an iPhone app. It has a login and session management functionality. Currently the session has been tracked by a token set during login. Are REST services affected by CSRF ...
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1answer
74 views

How to check randomness of a hash?

I have a REST api in which the server allots a unique token each time a user is logged in. Its a hash containing numbers,letters and a one or two special chars. I want to check the entropy of these ...
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3answers
2k views

CORS & CSRF Prevention for an REST based API

I'm currently trying to wrap my head around how to prevent CSRF. My first solution was to use a token which is suggested everywhere. That would of course fix this problem: <img ...
4
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1answer
276 views

Ouath2 how does it work (Android client)

I have read a lot about Oauth2 but still cannot understand, how does it work. I will explain how do I understand this protocol. There are some main characters in Oauth protocol interaction. User, ...
2
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2answers
171 views

Issuing secure tokens that doesn't require any server side state

The issue I am currently designing the backend for a SPA (Single Page Application), which I'm planning to construct in a fairly RESTful manner. The backend will ideally be just a thin layer between ...
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1answer
452 views

Authentication, authorization in native mobile clients (Android)

I am developing native mobile client for store that requires user authentication in order to make purchases available. I have my web store page, authentication is provided by CMS (OpenCart). Now I ...
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1answer
134 views

creating a TLS encrypted API

I have an HTTP API endpoint on my server that is encrypted (TLS). It is not a public API; users must sign-in and validate their account/identity to access the API. When I connect with my test client ...
2
votes
1answer
141 views

REST API - XSS prevention - When and how?

I am currently developing a REST API with Java EE and MySQL, it will feed Data to a Android App. The Data comes from an AngularJS Frontend. So my questions are, when: When do I escape the data? Before ...
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1answer
277 views

Request signing for REST API

I am building a REST API that will receive requests like: GET /api/entities GET /api/entities?filter=X&sort=Y This seems straight forward: have the client HMAC(path + query, key), send me a key ...
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1answer
189 views

Where to start with api security testing? [closed]

I have the backend api of an iOS application. I would like learn api testing on this. How to begin with api security testing?Please suggest some tutorials and tools available online.
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95 views

Securing REST API with HMAC and SPA

I'm developing a JS based SPA and the backend is a rest api which uses HMAC. The site/app doesn't have the concept of registered users but it has the concept of session. How do i make sure that the ...
4
votes
1answer
3k views

JSON Web Tokens - How to securely store the key?

I was building a RESTful Web Service when I came across JSON Web Tokens as an alternative to traditional cookies for authentication. The concept core of this method is that the server is the only ...
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3answers
350 views

Sending database name in request headers

I am doing a project with an architecture of single server and multiple database. Every client request will contain a header containing database name that this request should connect. Is this a good ...
3
votes
1answer
931 views

REST API communication between two Web Servers - VPN or https?

We have two servers that will be sharing data and communicate over a REST API: our main application server will communicate with the server of our client that is managing some assets. In short: Given ...
2
votes
1answer
43 views

Is this system of authentication secure for a mobile app? What can I do to improve it?

Users authenticate with their phone number, get a pin text, and if it is correct, they get an access token. Store the access token in a DB in a Token model. The client always sends the access token in ...
2
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0answers
102 views

Securing a JavaScript app with RESTful backend

I went through the question Securing a JavaScript Single Page App with RESTful backend that has discussions / options around securing a Javascript client side app that invokes RESTful APIs. However, ...