| Subject | English | Welsh |
| comp., MS | Protected View | Gwedd wedi'i Diogelu (A feature that offers improved security by loading a document in a read-only view, rather than in the full editor, for scenarios that pose a greater potential security risk) |
| comp., MS | Wi-Fi Protected Access | Mynediad Wi-Fi wedi'i Warchod (A security method used by wireless networks. WPA encrypts the information that is sent between computers on a wireless network and authenticates users to help ensure that only authorized people can access the network) |
| comp., MS | Wi-Fi Protected Access 2 | Mynediad Wi-Fi wedi'i Warchod 2 (A wireless implementation and the second generation of WPA security that is based on the final IEEE 802.11i amendment to the 802.11 standard) |
| comp., MS | write-protect | darllen-yn-unig (To prevent the writing (recording) of information, usually on a disk) |
| comp., MS | write-protected | darllen-yn-unig (Pertaining to a disk to which content cannot be recorded) |