be cautious

"With even more rain forecast tonight, conditions could still get a lot worse, so please be cautious," it said.

Be cautious of unsolicited calls or messages and verify the identity of anyone requesting sensitive data.

Be cautious of slight misspellings or unexpected domains.

“I have to be cautious and make sure I’m looking around.”

Toshiba, which has around 100 employees in China, has urged its workers "to be cautious of their safety".