guard against

We must **guard against** potential fraud in online transactions.

Phrasal-verb Security

Meaning

to take precautions to prevent something bad from happening

We must guard against potential fraud in online transactions.

a person who keeps watch, especially a soldier or police officer; a device worn or fitted to prevent...

In opposition to; contrary to; touching or resting on.

to reach a point where something becomes steady

to make progress toward achieving something

to persuade someone to do something

to spend time enjoying a game or toy with someone

to be more advanced or prepared than others

to play or move actively, especially as a child