Method and apparatus for identifying applets of risky content based on differential privacy preserving

A non-transitory computer readable storage medium storing contents that, when executed by one or more processors, cause the one or more processors to perform actions comprising:

• in response to monitoring a target operation performed by a user by using an applet facilitated by a service platform, determining whether an operation source is a risky operation source based, at least in part, on a risk identification policy group including risk identification policies independent of the applet, wherein the operation source is a combination of the user and a device used by the user;
• in response to determining that the operation source is a risky operation source, disturbing a program identifier of the applet by using a randomized response technique that satisfies one or more criteria of local differential privacy preserving, to obtain a disturbed program identifier;
• and
• sending an operation source identifier of the operation source and the disturbed program identifier to a serving end of the service platform, so that the serving end identifies whether the applet is an applet of risky content based on a plurality of received disturbed program identifiers by using the randomized response technique.

A system, comprising:

• one or more processors;
• and
• memory storing contents that, when executed by the one or more processors, cause the system to perform actions comprising:
• in response to monitoring a target operation performed by a user by using an applet facilitated by a service platform, determining whether an operation source is a risky operation source based, at least in part, on a risk identification policy group including risk identification policies independent of the applet, wherein the operation source is a combination of the user and a device used by the user;
• in response to determining that the operation source is a risky operation source, disturbing a program identifier of the applet by using a randomized response technique that satisfies one or more criteria of local differential privacy preserving, to obtain a disturbed program identifier;
• and
• sending an operation source identifier of the operation source and the disturbed program identifier to a serving end of the service platform, so that the serving end identifies whether the applet is an applet of risky content based on a plurality of received disturbed program identifiers by using the randomized response technique.