Hard to guard against or be on guard against; inevitable attacks or surprises that are hard to defend.
防防备；胜尽。形容防备不过来。
清·吴趼人《二十年目睹之怪现状》第四十七回这种小人，真是防不胜防。”
In the age of cyber attacks, data breaches are simply unavoidable—it's a case of being impossible to be always on guard.
Learn the next connected idiom: 防不胜防 (fáng bù shèng fáng) → 防微杜渐 (fáng wēi dù jiàn)
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