breaking through security

abstracts alarm alarms alert barrier barriers beware breakdown broken business chain chains chinks code concepts conceptual crime crimes criminal criminals danger dangerous dangers detect detection down faceless guard guarded hand hands hole holes idea industry info information informations insurance level link links loop loophole loopholes metaphor metaphors negative pass password person persons quiet safe safeguard safety secret secretive secure security sneak sneaky steal stealing stealth stealthy stop stopping symbol symbolise symbolising symbolism symbolize symbolizing system systems thief thieves thieving unknown