Mixing
曹大元
| 曹大元 | |
|---|---|
| 全名 | 曹大元 |
| 出生 | (1962-01-26) 1962年1月26日 中国上海 |
| 國籍 |  中国 |
| 師從 | 邱百瑞 |
| 名徒 | 谢赫、李劼、张学斌 |
| 段位 | 九段 |
| 所屬 | 中国棋院 |
曹大元（1962年1月26日－），中国上海人，职业围棋棋手，中国棋院九段。
曹1973年开始学棋，1982年定为六段，1986年升为九段，1994年获得全国围棋个人赛冠军。1994年底连胜三盘，结束第九届中日围棋擂台赛。曹大元的妻子杨晖也是著名围棋棋手，多次获得全国比赛冠军。
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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