High-water mark (computer security)

（重定向自Low watermark）

High-water mark was introduced in Clark Weissmann in 1969. It pre-dates the Bell–LaPadula security model, whose first volume appeared in 1972.

Under high-water mark, any object less than the user's security level can be opened, but the object is relabeled to reflect the highest security level currently open. Hence the name.

单词	Low watermark
释义	Low watermark 英语百科 High-water mark (computer security) （重定向自Low watermark） High-water mark was introduced in Clark Weissmann in 1969. It pre-dates the Bell–LaPadula security model, whose first volume appeared in 1972. Under high-water mark, any object less than the user's security level can be opened, but the object is relabeled to reflect the highest security level currently open. Hence the name.
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