Remote browsing session management

A computer-implemented method comprising:

• under control of a server system comprising one or more computing devices configured to execute specific instructions,
• receiving a request for a network resource from a client computing device;
• retrieving at least a portion of the network resource from a content provider;
• processing the retrieved portion of the network resource to detect a signature of an operation characterized as a high risk operation;
• determining, based at least partly on detecting the signature of the characterized operation, that processing content associated with the requested network resource will cause performance of the characterized operation on the client computing device;
• and
• in response, transmitting a notification regarding detection of the signature of the characterized operation to the client computing device.

Non-transitory computer storage storing an executable network computing component that, when executed by one or more computing devices, causes the one or more computing devices to perform a process comprising:

• receiving a request for a network resource, the request received from a client computing device executing a client-side browser application;
• retrieving at least a portion of the network resource from a content provider, the portion of the network resource corresponding to the client computing device request;
• processing the portion of the network resource to detect a signature of an operation characterized as a high risk operation;
• determining, based at least partly on detecting the signature of the characterized operation, that processing content associated with the requested network resource will cause performance of the characterized operation on the client computing device;
• and
• in response, transmitting a notification regarding detection of the signature of the characterized operation to the client computing device.