Similar to DNS_over_HTTPS

PF (firewall)

Ping of death

SQL injection

SYN cookies

SYN flood

UDP flood attack

VPN blocking

Web application firewall

Wi-Fi Protected Access

Wi-Fi Protected Setup

Wired Equivalent Privacy

WireGuard

XAdES

XML Encryption

XML Signature

Evil twin (wireless networks)

Attrition (website)

Antivirus software

Spyware#Anti-spyware programs

Electronic seal

Internet police