Vulnerable

Adjective

1. More or most likely to be exposed to the chance of being attacked or harmed, either physically or emotionally.

   "You are vulnerable to be bullied by someone at school."

2. Open to disclosing one's inner thoughts and feelings, acting in spite of one's instinct to self-preservation.

   "It's okay to get vulnerable every now and again."

3. More likely to be exposed to malicious programs or viruses.

   "a vulnerable PC with no antivirus software"

4. at moderate risk of extinction though not quite endangered.

   "Welsh is merely a vulnerable language, but Irish and Scottish Gaelic are definitely endangered."