*[2FA]: 2-Factor Authentication *[AOSP]: Android Open Source Project *[attack surface]: The attack surface of software or hardware is the sum of the different places an unauthorized user (the "attacker") can try to enter data to or extract data from. *[AVB]: Android Verified Boot *[CLI]: Command Line Interface *[CSV]: Comma-Separated Values *[DNSSEC]: Domain Name System Security Extensions *[DNS]: Domain Name System *[DoH]: DNS over HTTPS *[DoT]: DNS over TLS *[E2EE]: End-to-End Encryption/Encrypted *[ECS]: EDNS Client Subnet *[Exif]: Exchangeable image file format *[FDE]: Full Disk Encryption *[FIDO]: Fast IDentity Online *[GPG]: GNU Privacy Guard (PGP implementation) *[GPS]: Global Positioning System *[GUI]: Graphical User Interface *[GnuPG]: GNU Privacy Guard (PGP implementation) *[HOTP]: HMAC (Hash-based Message Authentication Code) based One-Time Password *[HTTPS]: Hypertext Transfer Protocol Secure *[HTTP]: Hypertext Transfer Protocol *[I2P]: Invisible Internet Project *[IMAP]: Internet Message Access Protocol *[IP]: Internet Protocol *[IPv4]: Internet Protocol version 4 *[IPv6]: Internet Protocol version 6 *[ISP]: Internet Service Provider *[ISPs]: Internet Service Providers *[LUKS]: Linux Unified Key Setup (Full-Disk Encryption) *[MAC]: Media Access Control *[MFA]: Multi-Factor Authentication *[OCSP]: Online Certificate Status Protocol *[OEM]: Original Equipment Manufacturer *[OEMs]: Original Equipment Manufacturers *[OS]: Operating System *[OTP]: One-Time Password *[OTPs]: One-Time Passwords *[OpenPGP]: Open-source implementation of Pretty Good Privacy (PGP) *[P2P]: Peer-to-Peer *[PGP]: Pretty Good Privacy (see OpenPGP) *[QNAME]: Qualified Name *[RSS]: Really Simple Syndication *[SELinux]: Security-Enhanced Linux *[SMS]: Short Message Service (standard text messaging) *[SMTP]: Simple Mail Transfer Protocol *[SNI]: Server Name Indication *[SSH]: Secure Shell *[SaaS]: Software as a Service (cloud software) *[TCP]: Transmission Control Protocol *[TEE]: Trusted Execution Environment *[TLS]: Transport Layer Security *[TOTP]: Time-based One-Time Password *[U2F]: Universal 2nd Factor *[UDP]: User Datagram Protocol *[VPN]: Virtual Private Network *[VoIP]: Voice over IP (Internet Protocol) *[W3C]: World Wide Web Consortium *[XMPP]: Extensible Messaging and Presence Protocol *[cgroups]: Control Groups