Mixing
城楼
古長安城楼
城樓，或稱作城門樓子，是指設在城上用來瞭望的樓臺。《後漢書·卷十六·鄧禹傳》：「從至廣阿，光武舍城樓上，披輿地圖。」城樓有時作為城堡主城的一部分，有時則作為城牆的防禦要塞，多設制於城牆的四角或城門上方。
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Information security
This article is part of a series on Information security Related security categories Internet security Cyberwarfare Computer security Mobile security Network security Threats Computer crime Vulnerability Eavesdropping Malware Spyware Ransomware Trojans Viruses Worms Rootkits Bootkits Keyloggers Screen scrapers Exploits Backdoors Logic bombs Payloads Denial of service Defenses Computer access control Application security Antivirus software Secure coding Secure by default Secure by design Secure operating systems Authentication Multi-factor authentication Authorization Data-centric security Encryption Firewall Intrusion detection system Mobile secure gateway Runtime application self-protection (RASP) v t e Information security , sometimes shortened to InfoSec , is the practice of preventing unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction of information. Th
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