📨
MTA-STS
Security
A way for email domains to require encrypted (TLS) email delivery.
tls
data in transit
phishing
Glossary
Privacy terms glossary
Plain-language explanations for encryption, tracking, compliance, and security concepts.
411 terms
(page 11 of 18)
🛡️
Multi-Factor Authentication (MFA)
Authentication
More than one “key” to your account.
two factor authentication
totp
biometric authentication
🧭
Multihop VPN
Network Privacy
A VPN route that goes through two or more servers.
vpn
double vpn
dedicated ip
🤝
Mutual TLS (mTLS)
Encryption
TLS where both sides prove who they are using certificates.
tls
certificate authority
pki
🌐
Network Privacy
Network Privacy
Keeping what you do online harder to watch on the network.
ip address
dns
vpn
🌐
Networking
Network Privacy
How devices connect and share data over networks.
dns
ip address
https
🧾
No‑Log Policy
Network Privacy
A promise not to keep certain activity logs.
vpn
ip logging
privacy notice
🔑
OAuth 2.0
Authentication
A standard way to let an app access your account without sharing your password.
authorization
access token
refresh token
📡
OCSP
Encryption
A way to check if a website certificate has been revoked.
certificate revocation
pki
tls
📦
Offline Backup
Data Management
A backup kept disconnected from the internet.
backups
ransomware
secure storage
🧩
Open Source
Security
Software whose code is public to inspect.
security audit
transparency
encryption
🪪
OpenID Connect (OIDC)
Authentication
A login layer on top of OAuth 2.0 used for “Sign in with Google/Apple/etc.”
oauth 2
single sign on
identity provider
✅
Opt‑in
Consent
Saying “yes” before something happens (like tracking).
consent
user consent
privacy settings
🚪
Opt‑out
Consent
A choice to stop something after it already started.
consent
user consent
privacy settings
🔐
Passkey
Authentication
A safer login that can replace passwords.
webauthn
fido2
two factor authentication
🔐
Passkeys
Authentication
A modern way to sign in without passwords, often using Face ID/Touch ID or a device PIN.
webauthn
fido2
passwordless authentication
🧪
Password Leak
Threats
When passwords get exposed in a leak or breach.
data breach
hashing
credential stuffing
🔒
Password Management
Security Techniques
Storing and handling passwords securely.
authentication
two factor authentication
🔑
Password Manager
Authentication
A safe place that remembers strong passwords.
strong password
password reuse
two factor authentication
🔁
Password Reset
Authentication
Changing your password when you forget it—or when you think it was stolen.
account recovery
two factor authentication
phishing
♻️
Password Reuse
Security
Using the same password on multiple sites.
password manager
credential stuffing
account takeover
🚫
Passwordless Authentication
Authentication
Logging in without using a password.
passkey
webauthn
multi factor authentication
🩹
Patch (Security Update)
Security
An update that fixes security bugs.
zero day
exploit
endpoint security
🇺🇸📜
Patriot Act
Privacy
A US law linked to expanded surveillance powers after 2001.
jurisdiction
data sovereignty
mass surveillance