Period of attack is a phrase that refers to a specific duration of time where a person or thing is particularly vulnerable to an assault or assaultive behaviors. There are several synonyms you can use when writing about this term. For example, "window of susceptibility" describes this period where an individual or group is more likely to experience negative outcomes. "Critical period" also connotes the same meaning, as this timeframe is crucial to pay attention to in order to prevent damage or harm. Additionally, phrases like "vulnerable period" or "targeted duration" can also be viable options to describe this concept in your writing. Using synonyms for "period of attack" can enhance the clarity of your work and help your readers better understand the message you're conveying.