| Subject | English | Welsh |
| comp., MS | Card Verification Value | Gwerth Gwirio Cerdyn (A code that credit card companies use to authorize credit card charges. For example, American Express uses a four-digit number on the front of the credit card, and Visa, MasterCard, and Discover use a three-digit number on the back) |
| comp., MS | two-step verification | gwirio dau gam (An optional Microsoft account sign-in method with which users can only sign in by entering both a password and a security code sent to them by the Microsoft account team) |
| comp., MS | verification certificate | tystysgrif dilysu (A certificate that represents the public-key portion of a token-signing certificate. A verification certificate is stored in the trust policy and used by the federation server in one organization to verify that incoming security tokens have been issued by valid federation servers in the organization's farm and in other organizations) |