vulnerable

Etymology

From Late Latin vulnerābilis (“injurious, wounding”), from Latin vulnerō (“I wound”).

adj

1. More or most likely to be exposed to the chance of being attacked or harmed, either physically or emotionally.
   The elimination of [Roger] Federer after [Rafael] Nadal's loss to Lukas Rosol would have created mild panic among the fans of these gloriously gifted but now clearly vulnerable geniuses. 29 June 2012, Kevin Mitchell, “Roger Federer back from Wimbledon 2012 brink to beat Julien Benneteau”, in The Guardian, archived from the original on 2016-11-15
   One particularly damaging, but often ignored, effect of conflict on education is the proliferation of attacks on schools[…]as children, teachers or school buildings become the targets of attacks. Parents fear sending their children to school. Girls are particularly vulnerable to sexual violence. 2013-07-19, Mark Tran, “Denied an education by war”, in The Guardian Weekly, volume 189, number 6, page 1
   You are vulnerable to be bullied by someone at school.
   1. 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.
2. (computing) More likely to be exposed to malicious programs or viruses.
   a vulnerable PC with no antivirus software