ID 102616988 © Maxkabakov | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
access alarm attack authorization black blackboard board care chalk classroom code concept crack crime data defend digital education encryption guardian hack information learn lesson net passkey password pin policy privacy property protect protection safe safety school secrecy secure security study system teach technology text texture web white word