Abstract: A method may include determining an absence of an authorized attendee and/or a presence of an unauthorized attendee at a first client device engaged in a web conference session with a second client device. Data from the first client device may also be analyzed to determine a presence of unauthorized content. Remedial actions may be performed in response to determining the absence of an authorized attendee, the presence of an unauthorized attendee, and/or the presence of the unauthorized content. The remedial actions may include terminating, at the first client device, the capture and/or uploading of audio and/or video data. The remedial actions may also include terminating, at the second client device, the downloading and/or display of data from the first client device. The remedial actions may further include terminating, at a web conference server, the sending of data from the first client device to the second client device.