A communication apparatus may include a reception portion, a decision portion, and a transmission portion. The reception portion may receive a first data request transmitted through a first security level communication, and a second data request transmitted through a second security level communication, the second security level being more secure than the first security level. The decision portion may decide whether a specific data request is the first data request or the second data request. The transmission portion may transmit a specific data to an apparatus that is a transmission source of the specific data request if the specific data request is the second data request, and may transmit different data to the apparatus if the specific data request is the first data request. The different data contains display information for causing the apparatus to retransmit the specific data request through the second security level communication.