The RICOH Interactive Whiteboard D2200 V1.3 to V2.2 D5500 V1.3 to V2.2 D5510 V1.3 to V2.2 the display versions with RICOH Interactive Whiteboard Controller Type1 V1.3 to V2.2 attached (D5520 D6500 D6510 D7500 D8400) and the display versions with RICOH Interactive Whiteboard Controller Type2 V3.0 to V3.1.10137.0 attached (D5520 D6510 D7500 D8400) does not verify its server certificates which allows man-in-the-middle attackers to eversdrop on encrypted communication.