black glossy buttons with security, hazard, warnin

alarm alertness attention avast ban beware black blank button caution circle concept cross danger dangerously exclamation forbiddance form gesture glass graphic hand hazard icon idea image information interdict interdiction interface isolated key lightning lock look mark must not out padlock power prohibition proscription protected protection rhombus safety security series set shadow shape sheriff shield shiny sign silver square star stop sword symbol triangle vector warning web white