Mixing
威廉·亚历山大
本條目介紹的是英国画家。關於荷兰国王，請見“威廉-亞歷山大 (荷蘭)”。
自画像，1793年
威廉·亚历山大（英语：William Alexander，1767年4月10日－1816年7月23日），英国画家、插画家、版画家。[1]
亚历山大曾随同马戛尔尼使团访问中国，留下多副画作，记录了18世纪末清朝城乡官民的风貌。
参考
^ Sylvanus Urban 1816, pp. 79,80.
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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