guard against

To prevent something unpleasant from happening.

Japanese Meaning

不快な事態が起こるのを防ぐ / 予防措置を講じる / 害悪を事前に防ぐ

To guard against fraud, the company implemented multi-factor authentication for all user accounts.

不正を防ぐために、会社はすべてのユーザーアカウントに多要素認証を導入しました。

Sense（1）

To prevent something unpleasant from happening.

guards against

（ present singular third-person ）

guarding against

（ participle present ）

guarded against

（ participle past ）

guarded against

（ past ）