A simple yellow padlock with a dark blue shackle and keyhole
Schlüsselwörter
lock,
padlock,
security,
secure,
safety,
protection,
key,
keyhole,
metal,
hardware,
closed,
locked,
private,
confidential,
forbidden,
access,
denial,
denied,
restricted,
barrier,
securement,
safeguarding,
guarding,
warning,
alert,
caution,
danger,
prohibited,
invalid,
blocking,
blockage,
preventing,
prevention,
stopping,
stop,
defense,
insulated,
protected,
protect,
preserve,
preservation,
maintain,
upkeep,
hold,
retaining,
keeping
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