Abstract: Disclosed are various embodiments for network site account management using a proxy server. A first request for a secured resource on a network site is received from a client. It is determined whether stored account information is available for the secured resource. A second request for the secured resource is generated based at least in part on the stored account information in response to determining that the stored account information is available for the secured resource. The second request is sent to a server corresponding to the network site. The secured resource is received from the server, and the secured resource is sent to the client.

Abstract: Disclosed are various embodiments for recovery and other management functions relating to security credentials which may be centrally managed. Account data, which includes multiple security credentials for multiple network sites for a user, is stored by a service in an encrypted form. A request for the account data is obtained from a client. The request specifies a security credential for accessing the account data. The account data is sent to the client in response to determining that the client corresponds to a preauthorized client and in response to determining that the security credential for accessing the account data is valid.

Abstract: Disclosed are various embodiments for recovery and other management functions relating to security credentials which may be centrally managed. Account data, which includes multiple security credentials for multiple network sites for a user, is stored by a service in an encrypted form. A request for the account data is obtained from a client. The request specifies a security credential for accessing the account data. The account data is sent to the client in response to determining that the client corresponds to a preauthorized client and in response to determining that the security credential for accessing the account data is valid.

Abstract: Disclosed are various embodiments for logging out from multiple network sites using an authentication client that manages sessions for the network sites. Account data is maintained for multiple accounts of a user for multiple network sites. The account data includes a respective security credential for each of the accounts. An authentication client automatically authenticates with multiple authentication services corresponding to multiple network sites using multiple accounts in response to the user accessing each network site. A respective session is established for each network site. A logout is performed by ending each one of the sessions.

Abstract: Disclosed are various embodiments for logging out from multiple network sites using an authentication client that manages sessions for the network sites. Account data is maintained for multiple accounts of a user for multiple network sites. The account data includes a respective security credential for each of the accounts. An authentication client automatically authenticates with multiple authentication services corresponding to multiple network sites using multiple accounts in response to the user accessing each network site. A respective session is established for each network site. A logout is performed by ending each one of the sessions.

Abstract: Disclosed are various embodiments for providing managed security credentials to network sites for authentication. Multiple accounts of a user are maintained for multiple network sites. A secured resource of a network site is to be accessed by a computing device. One of the accounts is identified according to a domain name of the network site. The account is associated with a different network site having a different domain name from the domain name. The computing device is automatically authenticated with the network site using a security credential associated with the account.

Abstract: Disclosed are various embodiments for authentication management services, where authentication services of network sites may support authentication management clients associated with different authentication management services. An authentication request is obtained by way of an authentication protocol from an authentication management client executed in a client computing device. The authentication request specifies a security credential associated with a user account. The user account at the client computing device is authenticated for access to at least one secured resource of a network site in response to the authentication request and in response to the authentication management client being supported.

Abstract: Disclosed are various embodiments for account management for multiple network sites. Multiple accounts of a user are maintained for multiple network sites in a computing device. A secured resource of a network site is to be accessed by the computing device. A new account is created, or an existing account is upgraded, in response to determining that the accounts are not capable of accessing the secured resource. A set of information about the user is provided to the network site to create, or upgrade, the account.

Abstract: Disclosed are various embodiments for logging out from multiple network sites using an authentication client that manages sessions for the network sites. Account data is maintained for multiple accounts of a user for multiple network sites. The account data includes a respective security credential for each of the accounts. An authentication client automatically authenticates with multiple authentication services corresponding to multiple network sites using multiple accounts in response to the user accessing each network site. A respective session is established for each network site. A logout is performed by ending each one of the sessions.

Abstract: Disclosed are various embodiments for recovery and other management functions relating to security credentials which may be centrally managed. Account data, which includes multiple security credentials for multiple network sites for a user, is stored by a service in an encrypted form. A request for the account data is obtained from a client. The request specifies a security credential for accessing the account data. The account data is sent to the client in response to determining that the client corresponds to a preauthorized client and in response to determining that the security credential for accessing the account data is valid.

Abstract: Disclosed are various embodiments for providing managed security credentials to network sites for authentication. Multiple accounts of a user are maintained for multiple network sites. A secured resource of a network site is to be accessed by a computing device. One of the accounts is identified according to a domain name of the network site. The account is associated with a different network site having a different domain name from the domain name. The computing device is automatically authenticated with the network site using a security credential associated with the account.

Abstract: Disclosed are various embodiments for account management for multiple network sites. Multiple accounts of a user are maintained for multiple network sites in a computing device. A secured resource of a network site is to be accessed by the computing device. A new account is created, or an existing account is upgraded, in response to determining that the accounts are not capable of accessing the secured resource. A set of information about the user is provided to the network site to create, or upgrade, the account.

Abstract: Disclosed are various embodiments for authentication management services, where authentication services of network sites may support authentication management clients associated with different authentication management services. An authentication request is obtained by way of an authentication protocol from an authentication management client executed in a client computing device. The authentication request specifies a security credential associated with a user account. The user account at the client computing device is authenticated for access to at least one secured resource of a network site in response to the authentication request and in response to the authentication management client being supported.

Abstract: Validation data, such as an image selected by a merchant, is rendered on a mobile device of a customer to provide the merchant confirmation that payment for an item submitted through the mobile device of the customer was in fact received by the merchant. The merchant may establish an account on a network-accessible computing device (e.g., in the “cloud”) that includes the validation data. The customer authorizes payment to the merchant from the mobile device using the network connectivity of the mobile device. When the payment is received by the merchant, the network-accessible computing device sends the validation data to the customer's mobile device. The merchant may be confident that he or she has in fact received an electronic payment from the customer when the validation data is presented on the mobile device. Techniques to prevent reuse and copying of the validation data are also discussed.