Cypher tripwires (aka "trips" or "traps") are a breakable utility commonly placed on walls. By shooting the wall where it is placed, you can break the tripwire and effectively counter it. Additionally, killing the cypher will disable the tripwire.
I have experience in Cypher and all I have to say is play Jett or break them because if you go against someone like peak it’s impossible to jump over or crouch under it